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service 4wd;tccm;encoder

  1. General
    Long ago my 2003 GMC Envoy wound up stuck in 4LO randomly. The selector was set to 2HI but you could tell it was 4LO. The Transfer case motor was trying to switch ranges but was audibly struggling as if it was locked up. Long story short, I pulled the motor off and manually adjusted the splines...
  2. 4x4 Drivetrain
    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...
  3. 4x4 Drivetrain
    Greetings: Thankfully, our winter weather is winding down here in Michigan, but I'm sure we'll still have a few days before I can officially retire A4WD for the season. Unfortunately, 4WD has been acting up on me and I'm not sure where to go. Searching through the forums, I'm convinced it's...
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