Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum banner
1 - 1 of 1 Posts

2004 gmc
26,436 Posts
Surely a bad thing that can damage components or cause a loss of control on corners. 2002 were notorious for having bad TCCMs, but the failure mode was a failure to initialize upon ignition start, not a failure to accurately read the switch position.

Recommend you change the switch first, since it's cheap nowadays, even from the dealer, after a 2005-2006 redesign for better reliability.

Also, how many miles do you have, and (since I always ask, even if it's not specifically related to the problem at hand) have you changed the transfer case fluid as required every 50K miles?
1 - 1 of 1 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.