Originally Posted by hp500efi

I have my 02 PSD chipped and before I took truck in for warranty (non motor related), I talked to the service manager and told him what I had done to the truck and asked if he would look beyond those mods if taken in...he said no problem...I did and they treated me fair.

Originally Posted by hunster

Federal Warranty Laws


1.The Magnuson-Moss Warranty Act (15 U.S.C. 2302(C))
This federal law regulates warranties for the protection of consumers. The essence of this law concerning aftermarket auto parts is that a vehicle manufacturer may not condition a written or implied warranty on the consumers using parts or services which are identified by brand, trade, or corporate name (such as the vehicle makers brand) unless the parts or service are provided free of charge. The law means that the use of an aftermarket part alone is not cause for denying the warranty. However, the law's protection does not extend to aftermarket parts in situations where such parts actually caused the damage being claimed under the warranty. Further, consumers are advised to be aware of any specific terms or conditions stated in the warranty which may result in its being voided. The law states in relevant part:
“No warrantor of a consumer product may condition his written or implied warranty of such product on the consumers using, in connection with such product, any article or service (other than article or service provided without charge under the terms of the warranty) which is identified by brand, trade or corporate name....” (15 U.S.C. 2302(C)).


Basicaly a mfgr can not "void your warranty" because you installed a k&n intake or anything else unless they offer you the accessory at no charge. They can deny claims if the accessory is the cause of the failure. I see a lot of service writers say" don't put that remote start in your car , It'll void the warranty" . Not true. Duking the service writer always helps and they seem to be more helpful pushing through a questionable claim.