wow thats crazy. im glad you got it figured out finally.

 

thanks! 6 weeks without my 1st gear really had pissed me off! lol

 

Hey Norris, where exactly were the headers hitting the wire harness? I just recently installed ARH headers on my Sierra Denali and I want to make sure this doesn't happen to me too!

 

take a look down the right side part of the chassis.. u should see a wire running along the front part of the chassis... the headers were tapping against that.. relocate the wire to somewhere else (I just zip tied it up)

 

damm bro glad u got that fixed,i bet that did suck

 

Cool, thanks man. I just installed a yank Pro Truck 3200 stall convertor yesterday and when I was under the truck I checked everything out and zip-tied the wire harness, as well as the right side O2 sensor harness, which could also drop down on the header. The only complaint I have with the ARH headers is the O2 sensor placement could be just a bit better, IMHO. Other than that, I think they're really the best header out there for the GMT 900.
Glad you figured that one out for us...