4X4 doesn't work, I've tried everything!!!!
Hi, I have a 2003 Trailblazer LS. 4.2 I6. 112k miles. I have the service 4wd light on, the check engine soon light on, ABS and brake and air bag lights also on. No cruise control working, and no 4x4, no lights on the selector switch except at start up when it performs a bulb check.
I have tried the pull #8 fuse trick (it never worked). I have replaced the encoder motor, the front actuator, the TCCM. and still nothing the same problem. I love this truck but this is baffling. I can not figure it out. I have cleaned grounds in various spots on the truck. I can see no visible wiring issue (frayed and or broken wires). I have replaced the ignition switch as well. Nothing seems to get the issue resolved. Any help would be appreciated. I hate going to the dealer and would like that to be a last resort.