2004 gmc envoy_sle
any advice on whats the best performance chips for our trucks? something with good quality and great power!! thanks
So I went to PCM for less and it has the PCM upgrades for the 2008-2009 I6 is there a certian area I should be looking in, I am sure this is an oversight on my part.I have the PCMforless and am very happy. However I also ran the Jet chip, stage 1, for just over 3 years and the PCM never returned to the orignal setting. I changed because I wanted something better.