Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum banner


  1. 02 Trailblazer new fan clutch not engaging

    I searched the forum, didn't see my issue so thought I'd give it a shot. AC compressor wouldn't run for more than 10 minutes before turning off completely until the engine cools and the 10 minute cycle would reset. Additionally, I had to replace the fan clutch (needed, it locked up [and the ac...
  2. HELP - Loss of Power and Shifting Problems (No Engine Light)

    OEM Issues
    Hi all, I'm new to the forum and hoping someone can help me... PLEASE!!. I have a 2003 Envoy with the l6 and we are having major issues. It has a major loss of power at full throttle or under heavy acceleration. Normal driving is fine but when I mash the pedal to WOT it may or may not go into...
  3. Encoder Motor/TCCM or anything else

    Hi Everyone, Here is my story- I have Trailblazer 2002. Initially I swithed the nob from 2WD to Full 4WD, the light kept blinking but didn't feel any engaging, and once in a while this also triggered Service 4WD light on. Brought the car to dealer and it was told Encoder Motor problem and...
  4. only passenger side a/c works and RPMs are jumping around

    I just had my fan clutch replaced this morning because it went bad. As I left the shop I kicked on the A/C and rolled up the windows. I immediately saw the RPm gauge jump to almost 0 RPM's, then it went back up to normal. I sat there for a bit and it continued to do this till I shut off the A/c...
  5. 05 TB Fan Overspeed no cruise.

    The 05 I6 blazer I have has an elusive problem. It started w/replacing my water pump. After changing it, I noticed that the fan roar became evident. I changed out the clutch, and no change. I have also replaced the fan clutch solid state relay. No change. Eureka, I found it -6 mos later...
  6. Not a 'Whine' Lover

    OK, so I've got the much talked about 'whine' and I think it's the A/C clutch. The only time it temporarily stops is when I turn on the A/C, and only when I am driving slowly. I can hear the whine cutting in and out, but I'm hoping I don't have to replace the whole compressor. Anyone else...