Changing your own oil w/ warranty

[ReaperHWK]

Just got a 2026 Tahoe RST with the 6.2. I’m going to buy the GMPP warranty soon to cover it for 100k miles.

I plan to change my own oil every 5k with penzoil platinum which is dexos certified (i would prefer to use the ultra platinum but that is not dexos certified) and log all the changes on the penzoil website as well as upload all receipts. I want to be meticulous because of the chance of engine failure.

Has anyone had a 6.2 go down that they did their own oil changes? Did the dealer/GM give you a hard time with any proof or blame?

 

[Marky Dissod]

Just got a 2026 Tahoe RST with the 6.2. I’m going to buy the GMPP warranty soon to cover it for 100k miles.

GM should be offering this for free ... anyway ...

I plan to change my own oil every 5k with penzoil platinum which is dexos certified (i would prefer to use the ultra platinum but that is not dexos certified)
and log all the changes on the pennzoil website as well as upload all receipts. I want to be meticulous because of the chance of engine failure.

Lake Speed Jr is not the only tribologist approving of an oil change schedule for breaking in brand new engines as follows:
500, 1500, 3000, 5000, 7500, 10500, 14000, 18000, 22500, and 27500 miles, and then every 5,000 miles thereafter
In case the engine still has any hidden 'swarf' that was not cleaned out prior to assembly, the above oil change schedule is your engine's best bet.
(look up the definition of swarf ...)
If that seems like too much for your Tahoe RST 6.2L, here's a gentler version of the above idea; change your oil at the following intervals:
1000, 3000, 6000, 10000, 15000 miles, and then every 5,000 miles thereafter.
Again, this is in case GM was not as thorough as they should have been cleaning the krapb out of your engine ... like they've been for the past few years ...

 

[ReaperHWK]

GM should be offering this for free ... anyway ...Lake Speed Jr is not the only tribologist approving of an oil change schedule for breaking in brand new engines as follows:
500, 1500, 3000, 5000, 7500, 10500, 14000, 18000, 22500, and 27500 miles, and then every 5,000 miles thereafter
In case the engine still has any hidden 'swarf' that was not cleaned out prior to assembly, the above oil change schedule is your engine's best bet.
(look up the definition of swarf ...)
If that seems like too much for your Tahoe RST 6.2L, here's a gentler version of the above idea; change your oil at the following intervals:
1000, 3000, 6000, 10000, 15000 miles, and then every 5,000 miles thereafter.
Again, this is in case GM was not as thorough as they should have been cleaning the krapb out of your engine ... like they've been for the past few years ...

I’m going to change mine at 1000 miles for sure. Actually I’ll let the dealer do that since I have the first one free.

My question is about the warranty though not intervals. I’ll be changing at or more than the factory required intervals.

 

[PPK_]

i use pennzoil as well. I kept lots of receipts on a e350, a yukon and a duramax. I buy filters 12 a time..

On the downside.. i am using 5-30w when i change.. not 0-20w.. i will change a gm 0-20 at 2000 miles and run 5-30 that i put in and let gm do the changes at 7500 miles…

This.. is terrible. I have had two ecopoops.. with nothing but trouble.. and gm eights are losing lifters a lot.. as well as other issues.. i also have a 72/72 on both my yukon and duramax 1500..

I would change the oil today. Below is my 500 mile change on my yukon.. it is full of unknowns in the first drain.

 

[tom3]

On our last three new vehicles I took it back to the dealer for oil changes through the warranty period. My dealer does everything right and complete and the extra cost lets me sleep a little better. But even Walmart oil changes with receipts would probably work. And you can go over it after they do it.

 

[Padraig]

Will the ECU tell GM when you changed the oil? I always assumed that they can check oil change, fuel filter change etc.

Padraig

 

[Joseph Garcia]

I can't speak for GM, but I changed my own oil on all of my Hondas, and as long as I could produce receipts for the oil and the filter and documented the mileage at each oil change, I had no warranty issues. But, that could have been the specific dealership where I had any warranty work done (VERY little warranty work is needed/incurred with Hondas, though).

Your question should be asked to the GM warranty administration folks, and get the answer in writing.

 

[ReaperHWK]

I can't speak for GM, but I changed my own oil on all of my Hondas, and as long as I could produce receipts for the oil and the filter and documented the mileage at each oil change, I had no warranty issues. But, that could have been the specific dealership where I had any warranty work done (VERY little warranty work is needed/incurred with Hondas, though).

Your question should be asked to the GM warranty administration folks, and get the answer in writing.

I’ll talk to the dealer when I get my first oil change. Thanks.

My reason for DIY is not money it’s the time to do it as I can do it faster myself rather than sitting at a dealer. Also I hate bringing cars in normally as eventually the dealer will always end up breaking or scratching something. They don’t take care of your stuff nearly as much as you would.

 

[Joseph Garcia]

I’ll talk to the dealer when I get my first oil change. Thanks.

My reason for DIY is not money it’s the time to do it as I can do it faster myself rather than sitting at a dealer. Also I hate bringing cars in normally as eventually the dealer will always end up breaking or scratching something. They don’t take care of your stuff nearly as much as you would.

Totally understood.

 

[homesick]

I can't speak for GM, but I changed my own oil on all of my Hondas, and as long as I could produce receipts for the oil and the filter and documented the mileage at each oil change, I had no warranty issues. But, that could have been the specific dealership where I had any warranty work done (VERY little warranty work is needed/incurred with Hondas, though).

Your question should be asked to the GM warranty administration folks, and get the answer in writing.

I have always read that this is true. You must have receipts for your purchases of oil, filters, or whatever.

joe

 

[AEHaas]

You should be safe as long as you document things. Eg: On delivery 1-22-2021 Lexol leather conditioner on all leather, then CoverAll protectant. Wax with 3M all painted areas reachable, all cracks, underside, wheel wells, any reachable frame and suspension parts, rubber protectant, all areas reachable. 08/23/2021 2227mi factory oil/filter. 2-18-2022 2675mi RLI 0W30 oil/filter, 1-21-2023 oil test at 3,675mi. 11-11-23 3,973mi. oil and brake fluid changes, 5W-40 Pakelo Krypton, new belts, engine air filters. 11/28/23 4,100mi Battery H7. 11/27/24 4,888mi full scheduled service. 11-13-2025 5,300mi FTB tires, headliner sagging repair. 12-15-2025 5,400mi 5W-30 HPL, coolant.

Ali

 

[Bigburb3500]

Just as a general word of caution to anyone on here: We had friends with a Ford (I think?) that had the engine implode for some reason and they had a warranty that SHOULD have covered the repair but because they went over one oil change interval (500-700 miles) 25k miles ago they denied the warranty coverage. Pretty unfair I think all in all but a word of caution if you have a warranty.

 

[Marky Dissod]

Will the ECU tell GM when you changed the oil? I always assumed that they can check oil change, fuel filter change etc.

The ecm can be TOLD when someone resets the Oil Life Monitor. Normally any decent mech will reset the Oil Life Monitor when an oil change is done.

(Don't know if the ecm 'knows' or can be 'told' about when the Fuel Pump Control Module is changed.)

...
had friends with a Ford (I think?) that had the engine implode for some reason and they had a warranty that SHOULD have covered the repair,
but because they went over one oil change interval (500-700 miles) 25k miles ago they denied the warranty coverage.

So, if the carmaker has data that they can use to excuse themselves from honoring the warranty, they will dishonor the warranty. Makes sense to the carmaker, I guess.

In other words,
changing oil more often than 'recommended' cannot possibly hurt, especially if you can prove it, but
changing oil LESS often than 'recommended' cannot possibly help.

 

[PPK_]

i think... in addition to the oil changes... you need a cache can. try to eliminate oil going into the intake... and then.. you really need to run a cleaner through the intake to wipe out the coked up valves.. this is what busts up your valve train. i do mine every time the motor - on start up.. shows a little bit of a valve not closing or in 7 or 8k miles. Then.. on the eights i would use a "carbyte" tool to keep the motor from running on less than all eight cylinders.. this is what i do on my '24 yukon..

the bad news.. i sold my F150 to get sierra.. duramax. i don't really don't like oil burners.. however.. i think the tooling on this engine is new. the drain oil is clean. still have DEF... other than that... the gas eights are not a great idea.

Pete

 

[catalinajack]

Just got a 2026 Tahoe RST with the 6.2. I’m going to buy the GMPP warranty soon to cover it for 100k miles.

I plan to change my own oil every 5k with penzoil platinum which is dexos certified (i would prefer to use the ultra platinum but that is not dexos certified) and log all the changes on the penzoil website as well as upload all receipts. I want to be meticulous because of the chance of engine failure.

Has anyone had a 6.2 go down that they did their own oil changes? Did the dealer/GM give you a hard time with any proof or blame?

Look up the Magnusson-Ferguson Act. By Federal law, warranties are NOT voided by changing your own oil or ANYTHING else.

 

[ReaperHWK]

Look up the Magnusson-Ferguson Act. By Federal law, warranties are NOT voided by changing your own oil or ANYTHING else.

Yes I am aware of that. But all I’m saying is that GM usually tries to deny warranty claims if they have any areas to do so. For example one undocumented oil change, you used an oil not dexos apprpved, you didn’t use the GM oil filter, etc.

Was wondering if anyone first hand had a denial like this.

They could try to deny a rod bearing claim due to improper oil change and it wouldn’t violate the act you are referencing.

For example if I was GM and someone used penzoil ultra platinum oil and a Mobil 1 oil filter on the submitted receipts I would go back and say “the use of non approved oil (not dexos certified) and non GM specified oil filter contributed to the failure of the engine and therefore it’s not covered”

 

[ZKWBQD]

Just got a 2026 Tahoe RST with the 6.2. I’m going to buy the GMPP warranty soon to cover it for 100k miles.

I plan to change my own oil every 5k with penzoil platinum which is dexos certified (i would prefer to use the ultra platinum but that is not dexos certified) and log all the changes on the penzoil website as well as upload all receipts. I want to be meticulous because of the chance of engine failure.

Has anyone had a 6.2 go down that they did their own oil changes? Did the dealer/GM give you a hard time with any proof or blame?

I would recommend against changing your own oil as long as you are under warranty. When / if the engine fails, they will aggressively try to deny any claim. If you do change your own oil, keep receipts, make videos.

 

[ReaperHWK]

I would recommend against changing your own oil as long as you are under warranty. When / if the engine fails, they will aggressively try to deny any claim. If you do change your own oil, keep receipts, make videos.

Leaning towards that even though it’s inconvenient for me and I’d have to remove my catch can for each service. I have a 100k warranty so this is a lot of dealer services.

Going to the dealer soon for my first oil change at 1000 miles since it’s free.

 

[EddieC]

I have always changed my own but keep receipts as proof of using materials that meet manufacturer's specs.

I don't know about GM's policies but I did have a situation with a Triumph motorcycle where I was asked during an unrelated warranty repair what specific oil I used for maintenance. I mentioned the specified Triumph oil, which passed muster without proof, although I had proof. From that I assumed there may be the tendency to link other warranty work to DIY work needing to meet factory specs for parts and materials. It seems trouble may come from unexpected directions.

 

[Fless]

Why not use the recommended (mandated?) products for your home oil changes, then?