#1 For starters i have a 1995 GMC Z71, I think my 4wd will engage in 4 lo (it makes a clunking noise and is slower) anyway the hubs are not locking, just got stuck checking it out. i just replaced the thermal actuator switch and it did not help, just bought a transfer case relay and cant find where it lives, i thought it bolted on the front driver side of the firewall??? Just trying some options, oh yeah it is a floor mount gear shift...
#2 What is the deal with the vaccum tube by the driver side headlight, it has one tube cming off of it and the the other outlet is missing a tube, there is a tube near by that is capped off??? does this have anything to do with the 4wd? Thanks Charley