Nacho SS

iTrader: (4)

Well if that part failure can be attributed to that aftermarket piece, then yes. It's hell to go through but its the Mangusson-Moss Warranty Act that is always protector of enthusiasts in these situations.

tokay57

ok, the tune, cai, exhaust increased the horsepower and torque of the engine and therfore caused the transmission failure because it exceeded the rated capacity.

tokay57

and not to mention the changes in shift points caused the transmission to shift at a higher power curve. what kind of proof do you think dealerships need?

radorider03

So if you put on a performance exhaust raising the hp and your tranny ***** out, it is not covered by warrenty? Dont think so.

tokay57

mufflers no, catless pipes, headers-yes

Nacho SS

iTrader: (4)

You sir are right, tokay, read the Mangusson-Moss Warranty Act.

tokay57

The Acts basically states that you can porperly install aftermarket parts that is compatible with the original manaufacturer's specifications (i.e. oil, filters, tune-up parts, shocks etc. Headers, a performance Tune , Catless pipes do not meet specifications and given a %@#hole dealer, they can void warranty on a given drivetrain part. However, most likely a dealer cannot deny warranty on a air conditioner because of a performance tune, but they can deny a busted transmission or a burnt piston.

2008impalaSS613

I personally cut off my mufflers and down puped my 08ss and put a superchips performance tune on it added 500500 rpm to each gear and it has adversly affected my tranny at wot it will not shift out of first without lifting off the gas so be carful

2008impalaSS613

I did not change shift psi tho and that may be the result of the shift problem too much power to make the shift

impalass08

what is a cal n where could u get the ls4 tuned in or around the chicago land area

bahdeets

Cheap insurance and very important to help the tranny and no warranty issues are a trans-cooler (GM makes one specifically for your car P/N 19129783) and an aluminum finned tranny pan.

Connie Foy-Armstrong

this is just another thing with this car, which I happen to love....my husband is telling me that once they "slip", they are basically "done". Can anyone tell me what if anything can be done?