I just bought an 05 envoy xl 5.3 4x4 for $200 because of a dead miss. Scanning it shows cyl 6 misfire and thats the only code. I have an 02 avalanche as well, and if I can't figure out whats wrong with the envoy, I'm going to scavenge whatever parts I can that will work with my avalanche, and scrap or sell the rest. I was wondering if anything on the envoy would work with the avalanche? Trans, engine parts, etc. The avalanche is 5.3 z71. Would the seats interchange? My avy seats are pretty torn but the envoy is mint. Any parts yall could think of please let me know.