4X4 doesn't work, I've tried everything!!!! - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 4.2L I-6 Engine and Drivetrain > 4x4 Drivetrain

4x4 Drivetrain 4x4 Repairs & Problems

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Old 03-20-2017, 10:34 PM
ajbarrio71 ajbarrio71 is offline
Junior Member
 
2003 Chevy TrailBlazer LS
Forest Green Metallic 4.2L I6 4X4
Join Date: Mar 2017
Location: highland, IN
Posts: 1
Exclamation 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.
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4x4, service 4wd;tccm;encoder, tccm

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