Jay,
If I were to supposedly put headers on a 07 Escalate as well as a Heartache programmer and cat back exhaust, would that void the warranty. I am thinking the headers would but not everything else.
Let me know por favor;
D
As long as there emission legal and have a EO number. You can call the manufacture and ask. Most of the stuff is legal just double check. You can always pull the program out when you have to go to the dealer.