james8997

Hey guys, just bought a 2012 gmc. She has 4500 miles on the clock. I'd live to have it tuned, but don't want to void the warranty. Would a tune void the warranty?

Area47

you have to pay to play.

in short. it can void it if a power train issue arises.

amanuel

Yes, if you go in with a tune. However tunes can be put back to stock and it's my understanding that none would be the wiser.

Can someone confirm or deny this? I'd hate to steer the op wrong.

ak2007r6

iTrader: (1)

Bingo. If you want to go faster and take something outside of the OEM parameters you should be expected to pay for what breaks. Warranty is to cover something how it came from GM, not what you decide to tinker with and then have an "oh ****" moment later.

62nalide

iTrader: (1)

Warranty? what's that? Dealers look at me funny for some reason when I use to drive by wonder why? I don't wanna play anymore

ak2007r6

iTrader: (1)

I paid for an extended warranty when I bought my truck and last time home went in asking if I could cash it out. The lady was confused and thought I was crazy and asked why I would do such a thing.

I ended up keeping it cause since the truck is not paid off all they could have done was put it towards the balance I owe and I figured I would keep it for all the extra road side assistance and tow service if I ever need it. Plus I am sure there is still some random part that might be covered LOL

RacinRust

Oh no, Here we go again !

Jason 6.2L

I've a 6 year bumper-to-bumper warranty and I was worried about voiding my warranty with a tune. I was going to get a Black Bear tune but if I had to switch out the PCM then I sure the dealer would know. So I looked into a diablo sport custom tune. According to them the way the programmer tunes the vehicle it saves your orginal backup OEM tune on the programmer and then you up load the new custom tune. The key part is you can switch back to the factory tune if you need to go back to the dealer for whatever reason. And Diablo Sport assured me that it would be almost impossible for the dealer to detect and changes as long as the factory tune is loaded back on, because of the way the programmer tunes the PCM it doesn't change any of the calibration numbers unique to your truck. After the installed the tune and drove about 50 miles I could defanitly see a difference especially in the shift firmness which the firmness from the factory sucks....way too soft which is actually worse for the tranny

AUTOT3K

iTrader: (3)

Is that about all you've noticed? Firmer shifts and higher shift points maybe cooler temp for fan to come on?
I had a super chips "custom tune" and after 3 days I filed for their money back guarantee and ordered a black bear efI live kit. I can update. Install and UN install within ten minutes and have had my truck in for warranty fixes

james8997

I had a GM tech tell me that as long as the factory tune was loaded back into the ECM, they wouldn't be able to tell its been flashed, but than Futral motor sports says they can tell if anything has been charged regardless if its been returned to factory specs