GMEPP question
Thread Starter
Pro
Joined: Mar 2018
Posts: 677
Likes: 414
From: Pensacola, FL
GMEPP question
I purchased a Platinum GMEPP three years ago and have not had to use it yet, I have 4 years left on it. My question is, I have installed an A&A Supercharger on my car which I am positive it has voided the Engine/Powertrain portion of the GMEPP, anyone know if this has voided the entire extended warranty or would other parts of the car still be warranted? example: would the electrical system still be covered? Infotainment Center, Door locks, power windows, basically everything that is not tied to the SuperCharger. Thanks!
Roadster Madness. 😠
Joined: Sep 2009
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From: Ventura Co Ca
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St. Jude Donor '13, '20-'21
It probably would have been a good idea to have checked this, before you made the change.
I do not know the answer, I would call the insurance company. Only their opinion matters.
Generally, in my experience, if you make a material change in a product, you void the warranty. I am not an attorney.
We have two insurance vendor who handle the product. I would check with them.
I do not know the answer, I would call the insurance company. Only their opinion matters.
Generally, in my experience, if you make a material change in a product, you void the warranty. I am not an attorney.
We have two insurance vendor who handle the product. I would check with them.
Team Owner
Joined: Sep 2000
Posts: 24,964
Likes: 2,680
From: Far NW 'burbs of Chicago
St. Jude Donor '13
I'd do the research without contacting the policy issuer. Don't poke a sleeping bear.
You might encounter some powertrain issue in the future that's not related to the supercharger and would otherwise be covered by your warranty. If your dealer/mechanic doesn't bring it up, and nobody comes to inspect it, you will probably get coverage. But don't be a jerk and try to sneak in coverage on a supercharger-related problem.
Any warranty on your powertrain is presumably toast, but I'd expect everything else to still be covered.
You might encounter some powertrain issue in the future that's not related to the supercharger and would otherwise be covered by your warranty. If your dealer/mechanic doesn't bring it up, and nobody comes to inspect it, you will probably get coverage. But don't be a jerk and try to sneak in coverage on a supercharger-related problem.
Any warranty on your powertrain is presumably toast, but I'd expect everything else to still be covered.
Drifting
Joined: Jun 2021
Posts: 1,393
Likes: 940
Your entire warranty is done. They tried to cancel mine for an aftermarket supercharger pulley. I actually had to prove it was an OEM to get it reinstated.
They are shrewd. They tried saying aftermarket pulley on a OEM tune. LOL
Good luck.
They are shrewd. They tried saying aftermarket pulley on a OEM tune. LOL
Good luck.
Tech Contributor
Joined: Oct 1999
Posts: 40,999
Likes: 9,764
From: Charlotte, NC (formerly Endicott, NY)
It is an insurance contract and not really a warranty. A car company can't void all of a warranty if you change something in the power train or void all of the warranty if you change to an aftermarket radio. However, with a contract, it all depends on how it is worded. If you only take the car in for repairs that you know are covered by the warranty the dealer may never open the hood to see your aftermarket SC. If your change voids the contract you may be able to be reimbursed for the remaining term of the contract.
I purchased my platinum plan 4.5 years ago and had 2 non-powertrain repairs in the first year that covered the complete cost of the contract.
Bill
I purchased my platinum plan 4.5 years ago and had 2 non-powertrain repairs in the first year that covered the complete cost of the contract.
Bill
Drifting
Joined: Mar 2022
Posts: 1,361
Likes: 768
From: Indiana
A supercharger cannot legally void your warranty for a brake issue, or a body control module for instance. They may say it does and it may be on your contracts wording, but that isn't legal. You would probably have to lawyer up.
Drifting
Joined: Jun 2021
Posts: 1,393
Likes: 940
It is in the wording. And they can and will do it. ANY modifications without GM approved parts voids the warranty, the entire contract is breached by you. They tried this on me like I said. They even sent me a check for the cost of it.
Luckily, I didn't breach the contract. The inspector didn't know what he was looking at and assumed it was aftermarket. My contract was voided and they mailed me a check.
It took a couple weeks but I got it reinstated. They couldn't explain how it still had the original tune and ran so well with a pulley swap lol.
Basically if it's cheaper, just fix it yourself. If it's a huge (thousands) repair and not too much trouble, put it back to original and then bring it in.
This is why I have an SS to mod and leave my C7Z bone stock.
Luckily, I didn't breach the contract. The inspector didn't know what he was looking at and assumed it was aftermarket. My contract was voided and they mailed me a check.
It took a couple weeks but I got it reinstated. They couldn't explain how it still had the original tune and ran so well with a pulley swap lol.
Basically if it's cheaper, just fix it yourself. If it's a huge (thousands) repair and not too much trouble, put it back to original and then bring it in.
This is why I have an SS to mod and leave my C7Z bone stock.
Last edited by ZO6LIFE; Jan 9, 2023 at 08:16 PM.
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Tech Contributor
Joined: Oct 1999
Posts: 40,999
Likes: 9,764
From: Charlotte, NC (formerly Endicott, NY)
None of the rules that have to be met by manufacturer's warranties have to be met by the insurance companies that provide extended warranties.
However, if the dealer never notes an aftermarket modification since they didn't open the hood and processes a warranty for a $1300 radio head replacement they will honor it. That will be done since the dealer will process a repair with a labor code and the computer will disburse the money more than likely with only the Service Advisor ever looking at the data entered.
Bill
Burning Brakes
Joined: Nov 2022
Posts: 910
Likes: 430
From: MN
Interesting discussion. I'm curious about this hypothetical scenario:
Let's say you buy a used Corvette from a Chevy dealer and also purchase the GMEPP. You drive the car a while and do not modify it and it starts to misfire. You take it to the dealer to get it fixed under warranty and they find out it has an aftermarket HPFP fuel pump (or whatever). You didn't put it in, it was sold to you with it installed, and they also sold you the warranty. But they say "oh you must have installed that" so warranty is voided. How do you prove you didn't put it in? Logically the burden of proof is on them, but we're dealing with laws here, not logic.
There has to be a way for the end consumer to have some trust that the dealership isn't selling you a garbage insurance policy they can easily weasel themselves out of.
Let's say you buy a used Corvette from a Chevy dealer and also purchase the GMEPP. You drive the car a while and do not modify it and it starts to misfire. You take it to the dealer to get it fixed under warranty and they find out it has an aftermarket HPFP fuel pump (or whatever). You didn't put it in, it was sold to you with it installed, and they also sold you the warranty. But they say "oh you must have installed that" so warranty is voided. How do you prove you didn't put it in? Logically the burden of proof is on them, but we're dealing with laws here, not logic.
There has to be a way for the end consumer to have some trust that the dealership isn't selling you a garbage insurance policy they can easily weasel themselves out of.
Drifting
Joined: Jun 2021
Posts: 1,393
Likes: 940
Interesting discussion. I'm curious about this hypothetical scenario:
Let's say you buy a used Corvette from a Chevy dealer and also purchase the GMEPP. You drive the car a while and do not modify it and it starts to misfire. You take it to the dealer to get it fixed under warranty and they find out it has an aftermarket HPFP fuel pump (or whatever). You didn't put it in, it was sold to you with it installed, and they also sold you the warranty. But they say "oh you must have installed that" so warranty is voided. How do you prove you didn't put it in? Logically the burden of proof is on them, but we're dealing with laws here, not logic.
There has to be a way for the end consumer to have some trust that the dealership isn't selling you a garbage insurance policy they can easily weasel themselves out of.
Let's say you buy a used Corvette from a Chevy dealer and also purchase the GMEPP. You drive the car a while and do not modify it and it starts to misfire. You take it to the dealer to get it fixed under warranty and they find out it has an aftermarket HPFP fuel pump (or whatever). You didn't put it in, it was sold to you with it installed, and they also sold you the warranty. But they say "oh you must have installed that" so warranty is voided. How do you prove you didn't put it in? Logically the burden of proof is on them, but we're dealing with laws here, not logic.
There has to be a way for the end consumer to have some trust that the dealership isn't selling you a garbage insurance policy they can easily weasel themselves out of.
Before I bought mine I had the dealer inspect it and check it for all original tuning. Then I had that documented on the bill of sale before I wired them the money.
Burning Brakes
Joined: Nov 2022
Posts: 910
Likes: 430
From: MN
Excellent point!!! But a different fuel pump would require tuning so that's easy to check. But there are cases of this issue that have happened.
Before I bought mine I had the dealer inspect it and check it for all original tuning. Then I had that documented on the bill of sale before I wired them the money.
Before I bought mine I had the dealer inspect it and check it for all original tuning. Then I had that documented on the bill of sale before I wired them the money.
I guess it's just another notch in my "becoming a cynic of anyone selling vehicles and houses" bedpost.
Tech Contributor
Joined: Oct 1999
Posts: 40,999
Likes: 9,764
From: Charlotte, NC (formerly Endicott, NY)
The fuel pump was just an example, could be anything else, not even related to tuning. Presumably the Magnasson-something warranty law that allows using OEM-spec but not OEM parts would apply to extended warranties, especially if the warranty is sold a "same coverage as the original warranty". Surely there can't be a wholesale way for mechanical insurance companies to squeak their way out of obligations when they're sold by the dealerships say "you have to buy it now when we know the condition of the vehicle".
I guess it's just another notch in my "becoming a cynic of anyone selling vehicles and houses" bedpost.
I guess it's just another notch in my "becoming a cynic of anyone selling vehicles and houses" bedpost.
Bill
Drifting
Joined: Jun 2021
Posts: 1,393
Likes: 940
Many dealerships will go through the entire car to find more things to replace or repair as a regular practice. Nearly every mechanic will do the same when you bring in your car for minor repairs or oil change. It's just good business sense because even if you don't fix the other stuff the average guy will leave thinking how nice they were to look over the rest of the car at no charge.
If you do get caught and voided at least they refund you.
If you do get caught and voided at least they refund you.
Pro
Joined: Nov 2013
Posts: 693
Likes: 158
From: Milwaukee WI
Not applicable...it is an insurance policy, not a warranty. Read the previous posts paying closer attention.