2000 GMC Sierra 1500 Q&A

2000 GMC Sierra 1500 Question: 2000 GMC truck service 4wd light on, stuck in four wheel drive.

Had truck scaned will not engage code came up ( not sure on code number think it was 323 or 363 not sure). Replaced encoder motor,4wd control module,tranfer case, dash switch, tested wiring harrness,actuator motor,all in working order. What have I over looked? -
Answer 1
my guess is the acuator which is a very common failure. there is a updated one available from gm. Roy -