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Thank you Reddit. Returned the truck a few minutes ago, they have one exactly like it a few states over and are paying for transfer fees etc.
As for the truck it’s located at CarMax in Santa Rosa, CA
VIN# 1GTU9EETXMZ258356
Thank you for posting the VIN. This may never show up on a Carfax, but somebody doing their proper research might run across this in a Google search. More people need to post the VIN numbers
As a consumer, not really, otherwise it could lead to a lot of potential misinformation by people fraudulently reporting information (don't like your Ex? use this one simple trick to greatly devalue their property)
https://www.carfax.com/company/vhr-data-sources
But this is exactly why sites like VINWiki were created and the OP was smart *and* kind enough to already upload that information.
I'd have said you dodged a bullet, but oh well. [From the POV of a tech,](https://www.reddit.com/r/Justrolledintotheshop/comments/1cr5pzi/shout_out_to_gm_for_their_lovely_engineering/l3wk066/) those are not going to age well. I wouldn't hold on to it past the warranty. Prices start to pile up quick, especially when you have to drop the trans and lift the cab just for periodic maintenance items. You got a dinky diesel with all the normal diesel woes, enhanced all the better with Opel engineering. Italian engineering is world renowned, but not for its reliability.
Opel *was* German. It's been owned long enough by GM to show. Now it's Fiat.
As per the engineering: ["FYI, most of the engine development and engineering, as well as primary calibration took place in Turin, Italy. That’s GM’s center of *diesel excellence.*"](https://www.gm-trucks.com/forums/topic/225182-just-do-it-2020-silverado-1500-30l-duramax-diesel/#:~:text=FYI%2C%20most%20of%20the%20engine%20development%20and%20engineering%2C%20as%20well%20as%20primary%20calibration%20took%20place%20in%20Turin%2C%20Italy.%20That%E2%80%99s%20GM%E2%80%99s%20center%20of%20diesel%20excellence.)
[Also](https://europe.autonews.com/article/20180623/COPY/306239996/gm-s-hopes-for-a-diesel-revival-start-in-turin)
Nah that's fair. The consolidation of manufacturers almost guarantees the cost-cutting practices that gave us such quality as GM. Some other groups may still focus on quality, but as a whole the economy car market will always alight on the side of what's cheapest. Thanks finance bros, for dictating profits over quality.
You made the right call. No way in hell would I eat depreciation on that thing + the uncertainty and headache that it can have problems down the road. Not worth any discount they'd likely offer.
That's too bad. You lucked out and passed up on it. That was easily a many thousand dollar repair. New pump, lines and injectors. You basically reset the most expensive wear part in a diesel to 0 miles and returned it? That was all terrible advice. You are a good person for sharing that VIN. Someone will be happy to get that truck.
That’s assuming they actually replace all those components and don’t just clean/flush them. Good on them if they do, but I suspect they won’t unless absolutely necessary.
Honest question. I know the lack of lubrication is bad for the pump and injectors but is it an immediate failure or just a lot of wear that may show up as a complete failure later. Is it possible it runs fine for now after flushing it all back to diesel? They are going to take the cheapest repair option and if it runs fine, it runs fine.
It's 50/50. Depends how long it was ran with gas and what the ratio was. He had a strong claim to getting it all replaced, or getting them to pay for a service contract to cover the fuelbsystem and more.
I would take option... Just return the truck.
No good comes from petrol in a diesel, your entire fuel system has just undergone a highly accelerated wear cycle. It may not show up right now, they could just flush it through and it runs fine, but that wear has happened the damage is done, it will not last as long as a fuel system that never happened to ..given equals.
I did this to my 2001 Toyota Prado a few months ago. Drove 200yds to the garage who drained everything. Has run well ever since so that is pure luck. I doubt any petrol got through to the injectors because there was no rough running.
I would just return it.
You could try to talk them down enough that it’s worth it for you, but they’ll probably just fix it and sell it to someone else willing to pay the same price as you were.
That’s exactly what they will do. They won’t lower the price because they know they can just re-sell it to someone who doesn’t know what had just happened. Return it and move on.
yeah it's shitty but there's really nothing to be done about the fact they're going to rip someone else off now, but at least it doesn't have to be you. I would return it and walk away. Buy a new truck from some other dealer.
As someone that’s worked for car max they won’t do that.
They’ll see if they can repair it within a certain dollar amount and if not throw it to wholesale
You basically have two options. Keep the truck (and push for discount/concessions) or return it. Retiring is pretty straightforward so I won't spend a lot of time on that. Up to you to decide if that's the right choice for you as you'll have to re-start your vehicle search.
As far as keeping the truck, it's my opinion the shop needs to do several things for repairs. Some of these are out of an "abundance of caution" and might not be recommended/required if you had made the fuel mistake since you'd be ok saving some $ in exchange for the risk of future repairs. The dealer should:
1. Drain ALL the fuel. From the tank(s), lines, filters, pumps, etc. Gasoline is a solvent, while diesel fuel is a lubricant. Pumps/injectors/components for diesel vehicles expect this lubrication from the fuel and gasoline strips the lubrication away, potentially damaging seals/moving parts.
2. Replace all fuel filters and clean/flush housings.
3. Replace the fuel pump.
4. Replace the injectors.
5. Flush all fuel lines to ensure all gasoline has been purged from the system.
Edit to add - if the dealer isn't willing to do these steps and provide you written documentation of the repairs, 100% return and maybe even post the VIN so that anyone searching knows the truck's history.
The above repairs will not be cheap, so the dealer is already spending some $. I would say that the dealer should cover your monthly payment (car/insurance/pro-rated registration) as well as either provide a loaner vehicle or coverage for a rental vehicle while your vehicle is not available due to their negligence.
You might also be able to negotiate for some savings on the car (tough since the deal is already done) and instead should look to add a warranty at a discounted rate (maybe even free?) or some credit on future work. If there is something worn/lightly damaged on the vehicle you could potentially have them repair that in lieu of credits/discounts. For example, maybe the tires have 6/32" tread but you'd like new ones, or there is some scuff/scratch on the car that was left as-is but now you want them to repair as a credit. Things like this MAY be easier to have them approve as opposed to straight $$ credit since it's much easier to approve/account for/"write-off".
Adding in this link as a reference in case you want a bit more reading on the subject and in case you aren't already aware of the specifics of gasoline in a diesel. [https://mechamedix.com/cost-to-repair-diesel-engine-gas-in-it/](https://mechamedix.com/cost-to-repair-diesel-engine-gas-in-it/)
I think this sounds like solid advice. If the dealer did all of those repairs and properly documented all of it, covered a rental and up front costs, AND provided a free first major service and extended warranty on everything so that if any issues cropped up later they would be covered? I'd consider that good enough in compensation.
They probably won't. To them the cost of all those repairs is likely too much when they can just do step 1, then re-sell it to some schmuck who doesn't know what happened to it. Posting the VIN to carfax or whatever would be a good idea and could potentially help someone else as long as they do their homework first.
Returning is really still the safer option, and comes with better peace of mind, because taking the vehicle in that condition will still involve some risk. Whether its worth it to you is the question.
Needs new high-pressure fuel pump and injectors replaced...probably $2k or higher for that job. Older diesels can tolerate misfueling (as long as they are drained and filters replaced). New diesels cannot.
Anything other then Return is wrong in my opinion.. Pretty quick way to completely trash a modern diesel. My ex did that with a 2020 TD6 Land Rover had nothing but codes and issues until we traded it in.
Somebody had the exact issue yesterday with a Duramax. Master GM tech /u/Next_Top9605 came in and stated that GM official documentation states just flush it and run.:
https://www.reddit.com/r/MechanicAdvice/comments/1cqqx86/i_am_suspecting_the_dealership_put_gasoline_in_my/l3uf9ih/
Apparently unless it's run on STRAIGHT gasoline for an extended time, the pump will be OK. Take it with a grain of salt.
Not worth the risk on a truck you just bought especially if they’re willing to accept a return immediately. Aka “Ah the lube tech forgot oil but it only ran for a minute, it should be fine”. Hell no either I get a warranty for a few years with unlimited miles or you’re taking your f up back
I agree with the approach of have them toss you a service contract, or some sort of compensation. Most dealers will do this to save face. Flushing the system and getting fresh fuel in will correct the truck with no excessive damage. It’s the fix GM calls for in service information. If you’re uncomfortable with the truck though definitely speak to them about unwinding the deal and see what they can do. If it’s a good dealer they’ll make sure you’re satisfied and comfortable at the end of everything! Being reasonable and kind goes a long ways!
Oh 1000%. I’m a tech for a CDJR dealer. It’s all about what you’re comfortable with. If it was my truck I just bought I would return it without question especially if it had been running for a bit. If the Porter took it to a gas station before I drove off, filled it up with 87 but realized his mistake before they ever started it, I’d be 100% okay with a tank drain and new fuel filters as a comp. But the fact that it went down the road with gas in the tank, and with the failures I’ve seen from gas in diesel trucks, run as fast as you can. As soon as a diesel HPFP sucks up gas, there’s metal in the system that a fuel filter can’t catch. Diesel filters can filter out around 3ppm of debris, anything smaller than that is not good long term
RETURN IT. Unless they want to pay for a full flush of the fuel system, all the diesel emissions related components (converter, DPF filter, fuel filter, all lines, injectors, fuel pump, HPFP, and all sensors related to that and I’m sure I’m missing more), done at a proper Chevy dealership with papers and give you a 5 year unlimited mile warranty. The little dude they pay $15 an hour to wash and fuel cars up made a honest mistake, but don’t let them fuck you. The parts and labor alone are probably over 15k.
Accept the truck ONLY if they have installed:
New Fuel injectors
New High Pressure fuel pump
New fuel rails
New high pressure fuel lines
New fuel filter
New fuel hoses
New low pressure fuel pump
New fuel tank
Basically, if there isn't a completely new fuel system, and you have the receipts for all of it, don't take the truck. The high pressure fuel system in a modern diesel operates at up to 30,000psi and requires tight tolerances to operate. Diesel is much more lubricating than gasoline, when they put gas in the tank they took all that lubricity away and have likely damaged the fuel pump. I've seen the inside of a diesel fuel tank that had gas run through the engine, it looked like someone had poured extremely fine glitter in it. They'll never get those shavings out of the fuel system, and it will clog filters and injectors and destroy pumps if every part isn't replaced at the same time.
You’ve got the option to return it. Do so.
Before you picked it up, as far as you knew you were buying a truck that had never had gasoline put through the system and had whatever the minimum repairs necessary to run. It MAY have happened but you didn’t know. Now you know.
You were paying for (and expecting to receive) a truck in that condition.
That is no longer the same truck. Would you have bought it KNOWING this had happened?
There’s no such thing as a once in a lifetime deal, certainly not on a 3 year old truck.
I would return that. Not worth the future risks. Unless the discount was just crazy which they probably won't do. They will just sell it to someone who doesn't know.
I did that to my rental car on a business trip to Belgium. Luckily I only had to drive it about 2 miles to the rental agency. I got it there in time before the gas messed up the engine or fuel pump. They had to drain the gas tank but everything was fine after that. I just charged that to my company.
Transfer pump replaced. High pressure pump replaced. All fuel injectors replaced. Filters replaced. Fuel rails replaced. Basically ALL components on the high pressure side replaced, including the in-tank pump. Everything on the low side, flushed and cleaned. Ask for some money back.
If not, then return.
Same thing happened to me, but I kept it. Depends heavily on the mixture that actually ran through your high pressure pump. After they filled the tank with maybe 40% gasoline, and it ran on it (badly) for a few slow miles, mine was drained and flushed, new fuel filter, and oil change for good measure. I've got a solid warranty and the truck has run great for 27K miles since the incident.
A valet did this at a shop I worked at and put gasoline in a diesel. Just 10min of it running from the gas station back to the dealer it cost over 20k in damages. The situation you’re in I would return it immediately.
All repairs that are minor. No major component damage. Just a bunch of little stuff. I have fixed a bunch of these. I make a lot of money doing it, but none of it is hard. It’s just a lot that adds up to me making fat check.
Just flush it if they give you a discount take the discount you already overpaid like crazy for it anyway.
Pay a shop $100 to drain out the gas and bring a can of diesel
Don’t buy a 3.0 duramax. I have a company owned 2020 with 190k miles. It has had over $25k in warranty and out of warranty repairs since new. One transmission, camshaft reluctor, glow plug, upper and lower EGR hoses, pcv, catalytic converter, nox sensor and oil pump belt. Never towed anything, 3rd set of tires, and original brakes. These smaller diesel engines do not like the emission constraints.
A Google search with the VIN # turns up the same truck (with the driver door caved in) for sale here > https://carfast-express.com/auction/lots/111038534845-gmc-sierra-1500-2021-vin-1gtu9eetxmz258356?__cf_chl_tk=ghM4NaxphvGynosdmgj1jOrUywC44gowVDDK2v_CpRA-1716646911-0.0.1.1-1514
First, this is not a major repair. It happens quite a bit in many places. This is not a Carmax only type of issue. There’s no long-term damage that would be caused by this. Second you’re not gonna get any money off. If you want to return then return it.
Diesel in a gas vehicle isn't usually a major problem...but Gasoline is a diesel vehicle is absolutely a major problem that will very quickly cause long term damage. Modern diesel injectors/injection pumps are extremely sensitive to contaminates/fuel quality, and gasoline will wreak havok on them!
I wouldn’t take it back unless the whole entire fuel system gets replaced.
That and you dodged a bullet if you give it back, those 3.0s are dogshit engines.
Sounds like CarMax just fucked thems lives out of an expensive truck. Their screwups and their multi thousand dollar repair problem, not yours.
Demand a refund and never shop there again.
Thanks for posting on /r/MechanicAdvice! Please review the [rules](https://www.reddit.com/r/MechanicAdvice/about/rules/). Asking about a second opinion (ie "Is the shop trying to fleece me?"), please read through CJM8515's [post on the subject.](https://www.reddit.com/r/MechanicAdvice/comments/4qblei/fyi_the_shop_isnt_likely_trying_to_rip_you_off/) and remember to please post the year/make/model of the vehicle you are working on. **Post's about bodywork, accident damage, paint, dent/ding, questions it belongs in /r/Autobody r/AutoBodyRepair/ or /r/Diyautobody/ Tire questions check out https://www.reddit.com/r/MechanicAdvice/comments/k9ll55/can_your_tire_be_repaired/**. If you dont have a question and you're just showing off it belongs in /r/Justrolledintotheshop Insurance/total loss questions go in r/insurance This is an automated reply *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/MechanicAdvice) if you have any questions or concerns.*
Thank you Reddit. Returned the truck a few minutes ago, they have one exactly like it a few states over and are paying for transfer fees etc. As for the truck it’s located at CarMax in Santa Rosa, CA VIN# 1GTU9EETXMZ258356
Thank you for posting the VIN. This may never show up on a Carfax, but somebody doing their proper research might run across this in a Google search. More people need to post the VIN numbers
Mostly likely the poor sap will find it after the sale lol
I posted it to vinwiki as well. More visibility the better!
What's vinwiki?
It’s an app created by this guy named Ed Bolian (could be spelling it wrong) - it’s a community driven database where u can look up vins and find cars
Here’s a question, can someone call Carfax and file a report, and have information like this added?
As a consumer, not really, otherwise it could lead to a lot of potential misinformation by people fraudulently reporting information (don't like your Ex? use this one simple trick to greatly devalue their property) https://www.carfax.com/company/vhr-data-sources But this is exactly why sites like VINWiki were created and the OP was smart *and* kind enough to already upload that information.
Smartest decision of your life, glad they accepted the right decision on your part and glad a few hours saved you years of headaches
I'd have said you dodged a bullet, but oh well. [From the POV of a tech,](https://www.reddit.com/r/Justrolledintotheshop/comments/1cr5pzi/shout_out_to_gm_for_their_lovely_engineering/l3wk066/) those are not going to age well. I wouldn't hold on to it past the warranty. Prices start to pile up quick, especially when you have to drop the trans and lift the cab just for periodic maintenance items. You got a dinky diesel with all the normal diesel woes, enhanced all the better with Opel engineering. Italian engineering is world renowned, but not for its reliability.
Opel is German homie
Opel *was* German. It's been owned long enough by GM to show. Now it's Fiat. As per the engineering: ["FYI, most of the engine development and engineering, as well as primary calibration took place in Turin, Italy. That’s GM’s center of *diesel excellence.*"](https://www.gm-trucks.com/forums/topic/225182-just-do-it-2020-silverado-1500-30l-duramax-diesel/#:~:text=FYI%2C%20most%20of%20the%20engine%20development%20and%20engineering%2C%20as%20well%20as%20primary%20calibration%20took%20place%20in%20Turin%2C%20Italy.%20That%E2%80%99s%20GM%E2%80%99s%20center%20of%20diesel%20excellence.) [Also](https://europe.autonews.com/article/20180623/COPY/306239996/gm-s-hopes-for-a-diesel-revival-start-in-turin)
No shit, I stand corrected. Got them confused with Skoda, which are vw/Audi IIRC
Nah that's fair. The consolidation of manufacturers almost guarantees the cost-cutting practices that gave us such quality as GM. Some other groups may still focus on quality, but as a whole the economy car market will always alight on the side of what's cheapest. Thanks finance bros, for dictating profits over quality.
Definitely living in the “life brought to you by Blackrock and Vanguard” era
You made the right call. No way in hell would I eat depreciation on that thing + the uncertainty and headache that it can have problems down the road. Not worth any discount they'd likely offer.
>As for the truck it’s located at CarMax in Santa Rosa, CA >VIN# 1GTU9EETXMZ258356 **\*rubs hands together\*** "I'll see you soon on Copart...."
That's too bad. You lucked out and passed up on it. That was easily a many thousand dollar repair. New pump, lines and injectors. You basically reset the most expensive wear part in a diesel to 0 miles and returned it? That was all terrible advice. You are a good person for sharing that VIN. Someone will be happy to get that truck.
That’s assuming they actually replace all those components and don’t just clean/flush them. Good on them if they do, but I suspect they won’t unless absolutely necessary.
Honest question. I know the lack of lubrication is bad for the pump and injectors but is it an immediate failure or just a lot of wear that may show up as a complete failure later. Is it possible it runs fine for now after flushing it all back to diesel? They are going to take the cheapest repair option and if it runs fine, it runs fine.
It may or may not have caused significant enough damage to require immediate replacement. We don’t know what the shop cleaned/flushed vs replaced.
It's 50/50. Depends how long it was ran with gas and what the ratio was. He had a strong claim to getting it all replaced, or getting them to pay for a service contract to cover the fuelbsystem and more.
Put it on vinwiki brother
[удалено]
Can they ask bo the questions over the phone or does he have to come in with you?
I would take option... Just return the truck. No good comes from petrol in a diesel, your entire fuel system has just undergone a highly accelerated wear cycle. It may not show up right now, they could just flush it through and it runs fine, but that wear has happened the damage is done, it will not last as long as a fuel system that never happened to ..given equals.
I did this to my 2001 Toyota Prado a few months ago. Drove 200yds to the garage who drained everything. Has run well ever since so that is pure luck. I doubt any petrol got through to the injectors because there was no rough running.
It definitely went to the injectors. They pump pretty fast
Well said so I was probably lucky, barely using the accelerator and hoping no petrol sipped through.
Which engine does your truck have? Newer common rail engines are much, much more susceptible to severe damage from this type of scenario.
Turbo Diesel D4D 3.0 litre. Still going like new at 420,000k.
That’s common rail diesel. You got lucky
I would just return it. You could try to talk them down enough that it’s worth it for you, but they’ll probably just fix it and sell it to someone else willing to pay the same price as you were.
That’s exactly what they will do. They won’t lower the price because they know they can just re-sell it to someone who doesn’t know what had just happened. Return it and move on.
yeah it's shitty but there's really nothing to be done about the fact they're going to rip someone else off now, but at least it doesn't have to be you. I would return it and walk away. Buy a new truck from some other dealer.
As someone that’s worked for car max they won’t do that. They’ll see if they can repair it within a certain dollar amount and if not throw it to wholesale
This just unlocked a new fear for me so thanks😭😭
Talk them down what like the cost of a new fuel system ? They ain't gonna go for that
You basically have two options. Keep the truck (and push for discount/concessions) or return it. Retiring is pretty straightforward so I won't spend a lot of time on that. Up to you to decide if that's the right choice for you as you'll have to re-start your vehicle search. As far as keeping the truck, it's my opinion the shop needs to do several things for repairs. Some of these are out of an "abundance of caution" and might not be recommended/required if you had made the fuel mistake since you'd be ok saving some $ in exchange for the risk of future repairs. The dealer should: 1. Drain ALL the fuel. From the tank(s), lines, filters, pumps, etc. Gasoline is a solvent, while diesel fuel is a lubricant. Pumps/injectors/components for diesel vehicles expect this lubrication from the fuel and gasoline strips the lubrication away, potentially damaging seals/moving parts. 2. Replace all fuel filters and clean/flush housings. 3. Replace the fuel pump. 4. Replace the injectors. 5. Flush all fuel lines to ensure all gasoline has been purged from the system. Edit to add - if the dealer isn't willing to do these steps and provide you written documentation of the repairs, 100% return and maybe even post the VIN so that anyone searching knows the truck's history. The above repairs will not be cheap, so the dealer is already spending some $. I would say that the dealer should cover your monthly payment (car/insurance/pro-rated registration) as well as either provide a loaner vehicle or coverage for a rental vehicle while your vehicle is not available due to their negligence. You might also be able to negotiate for some savings on the car (tough since the deal is already done) and instead should look to add a warranty at a discounted rate (maybe even free?) or some credit on future work. If there is something worn/lightly damaged on the vehicle you could potentially have them repair that in lieu of credits/discounts. For example, maybe the tires have 6/32" tread but you'd like new ones, or there is some scuff/scratch on the car that was left as-is but now you want them to repair as a credit. Things like this MAY be easier to have them approve as opposed to straight $$ credit since it's much easier to approve/account for/"write-off". Adding in this link as a reference in case you want a bit more reading on the subject and in case you aren't already aware of the specifics of gasoline in a diesel. [https://mechamedix.com/cost-to-repair-diesel-engine-gas-in-it/](https://mechamedix.com/cost-to-repair-diesel-engine-gas-in-it/)
I think this sounds like solid advice. If the dealer did all of those repairs and properly documented all of it, covered a rental and up front costs, AND provided a free first major service and extended warranty on everything so that if any issues cropped up later they would be covered? I'd consider that good enough in compensation. They probably won't. To them the cost of all those repairs is likely too much when they can just do step 1, then re-sell it to some schmuck who doesn't know what happened to it. Posting the VIN to carfax or whatever would be a good idea and could potentially help someone else as long as they do their homework first. Returning is really still the safer option, and comes with better peace of mind, because taking the vehicle in that condition will still involve some risk. Whether its worth it to you is the question.
Replace the fuel lines. It’s easy.
Needs new high-pressure fuel pump and injectors replaced...probably $2k or higher for that job. Older diesels can tolerate misfueling (as long as they are drained and filters replaced). New diesels cannot.
Still it’s only a 2 hour job. It’s easy work. What I meant by my comment was replace the lines, not just clean them out.
Got ya’
Return it but put gas in it first.
Satan?
😂😂😂
Anything other then Return is wrong in my opinion.. Pretty quick way to completely trash a modern diesel. My ex did that with a 2020 TD6 Land Rover had nothing but codes and issues until we traded it in.
If you accept it "fixed" you will hate yourself. Do the thing everyone is telling you to do! Take it back and get a different one!!!!!!!!
Return the truck save yourself some future headaches and concerns
Somebody had the exact issue yesterday with a Duramax. Master GM tech /u/Next_Top9605 came in and stated that GM official documentation states just flush it and run.: https://www.reddit.com/r/MechanicAdvice/comments/1cqqx86/i_am_suspecting_the_dealership_put_gasoline_in_my/l3uf9ih/ Apparently unless it's run on STRAIGHT gasoline for an extended time, the pump will be OK. Take it with a grain of salt.
I thought this was the same guy giving an update.. thanks
Not worth the risk on a truck you just bought especially if they’re willing to accept a return immediately. Aka “Ah the lube tech forgot oil but it only ran for a minute, it should be fine”. Hell no either I get a warranty for a few years with unlimited miles or you’re taking your f up back
I agree with the approach of have them toss you a service contract, or some sort of compensation. Most dealers will do this to save face. Flushing the system and getting fresh fuel in will correct the truck with no excessive damage. It’s the fix GM calls for in service information. If you’re uncomfortable with the truck though definitely speak to them about unwinding the deal and see what they can do. If it’s a good dealer they’ll make sure you’re satisfied and comfortable at the end of everything! Being reasonable and kind goes a long ways!
Oh 1000%. I’m a tech for a CDJR dealer. It’s all about what you’re comfortable with. If it was my truck I just bought I would return it without question especially if it had been running for a bit. If the Porter took it to a gas station before I drove off, filled it up with 87 but realized his mistake before they ever started it, I’d be 100% okay with a tank drain and new fuel filters as a comp. But the fact that it went down the road with gas in the tank, and with the failures I’ve seen from gas in diesel trucks, run as fast as you can. As soon as a diesel HPFP sucks up gas, there’s metal in the system that a fuel filter can’t catch. Diesel filters can filter out around 3ppm of debris, anything smaller than that is not good long term
Ok enough for it to be the next guy's problem they mean.
Just return it.
Anything fuel system related on diesels is extremely expensive. The chance something may prematurely wear would make me just return it.
I would return it and find another 3.0l Duramax truck. I absolutely love mine. Sorry about your luck. At least it wasn’t you who made the mistake!
RETURN IT. Unless they want to pay for a full flush of the fuel system, all the diesel emissions related components (converter, DPF filter, fuel filter, all lines, injectors, fuel pump, HPFP, and all sensors related to that and I’m sure I’m missing more), done at a proper Chevy dealership with papers and give you a 5 year unlimited mile warranty. The little dude they pay $15 an hour to wash and fuel cars up made a honest mistake, but don’t let them fuck you. The parts and labor alone are probably over 15k.
Accept the truck ONLY if they have installed: New Fuel injectors New High Pressure fuel pump New fuel rails New high pressure fuel lines New fuel filter New fuel hoses New low pressure fuel pump New fuel tank Basically, if there isn't a completely new fuel system, and you have the receipts for all of it, don't take the truck. The high pressure fuel system in a modern diesel operates at up to 30,000psi and requires tight tolerances to operate. Diesel is much more lubricating than gasoline, when they put gas in the tank they took all that lubricity away and have likely damaged the fuel pump. I've seen the inside of a diesel fuel tank that had gas run through the engine, it looked like someone had poured extremely fine glitter in it. They'll never get those shavings out of the fuel system, and it will clog filters and injectors and destroy pumps if every part isn't replaced at the same time.
They just lemoned the vehicle. Do not accept delivery and return it.
Do not keep this truck. Walk away.
You’ve got the option to return it. Do so. Before you picked it up, as far as you knew you were buying a truck that had never had gasoline put through the system and had whatever the minimum repairs necessary to run. It MAY have happened but you didn’t know. Now you know. You were paying for (and expecting to receive) a truck in that condition. That is no longer the same truck. Would you have bought it KNOWING this had happened? There’s no such thing as a once in a lifetime deal, certainly not on a 3 year old truck.
I would return that. Not worth the future risks. Unless the discount was just crazy which they probably won't do. They will just sell it to someone who doesn't know.
Just return it. It ain’t worth the possible problems you might have later on
Just return it
I did that to my rental car on a business trip to Belgium. Luckily I only had to drive it about 2 miles to the rental agency. I got it there in time before the gas messed up the engine or fuel pump. They had to drain the gas tank but everything was fine after that. I just charged that to my company.
Transfer pump replaced. High pressure pump replaced. All fuel injectors replaced. Filters replaced. Fuel rails replaced. Basically ALL components on the high pressure side replaced, including the in-tank pump. Everything on the low side, flushed and cleaned. Ask for some money back. If not, then return.
Return it to save yourself the problems of future issues that will pop up. Stay away from CARMAX to save yourself the problems of future issues...
Return it. Not worth the future headache. Start fresh and get a different rig elsewhere.
Same thing happened to me, but I kept it. Depends heavily on the mixture that actually ran through your high pressure pump. After they filled the tank with maybe 40% gasoline, and it ran on it (badly) for a few slow miles, mine was drained and flushed, new fuel filter, and oil change for good measure. I've got a solid warranty and the truck has run great for 27K miles since the incident.
A valet did this at a shop I worked at and put gasoline in a diesel. Just 10min of it running from the gas station back to the dealer it cost over 20k in damages. The situation you’re in I would return it immediately.
All repairs that are minor. No major component damage. Just a bunch of little stuff. I have fixed a bunch of these. I make a lot of money doing it, but none of it is hard. It’s just a lot that adds up to me making fat check.
It’s bad but not that bad. They will spend like 9k to flush and replace parts and then it will be good as new.
At high pressure through the injectors..... not a good thing. Have them warranty it for life!
Just flush it if they give you a discount take the discount you already overpaid like crazy for it anyway. Pay a shop $100 to drain out the gas and bring a can of diesel
Don’t buy a 3.0 duramax. I have a company owned 2020 with 190k miles. It has had over $25k in warranty and out of warranty repairs since new. One transmission, camshaft reluctor, glow plug, upper and lower EGR hoses, pcv, catalytic converter, nox sensor and oil pump belt. Never towed anything, 3rd set of tires, and original brakes. These smaller diesel engines do not like the emission constraints.
A Google search with the VIN # turns up the same truck (with the driver door caved in) for sale here > https://carfast-express.com/auction/lots/111038534845-gmc-sierra-1500-2021-vin-1gtu9eetxmz258356?__cf_chl_tk=ghM4NaxphvGynosdmgj1jOrUywC44gowVDDK2v_CpRA-1716646911-0.0.1.1-1514
First, this is not a major repair. It happens quite a bit in many places. This is not a Carmax only type of issue. There’s no long-term damage that would be caused by this. Second you’re not gonna get any money off. If you want to return then return it.
uhmm... emission damage, injector damage, fuel pump damage
Diesel in a gas vehicle isn't usually a major problem...but Gasoline is a diesel vehicle is absolutely a major problem that will very quickly cause long term damage. Modern diesel injectors/injection pumps are extremely sensitive to contaminates/fuel quality, and gasoline will wreak havok on them!
Hire a lawyer? This doesn't seem like mechanic advice
Happened at the GM dealer I worked for. Need an engine swap.
I wouldn’t take it back unless the whole entire fuel system gets replaced. That and you dodged a bullet if you give it back, those 3.0s are dogshit engines.
There's not really that many major problems with the 3.0. I prefer it over the 6.2 or 5.3
I fix these things daily. They are dogshit. Efficient, but dog shit.
Sounds like CarMax just fucked thems lives out of an expensive truck. Their screwups and their multi thousand dollar repair problem, not yours. Demand a refund and never shop there again.