Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum banner


  1. Stabililtrak & No acceleration

    Hi, I have an 08 Trailblazer LT3 with the 5.3L V8. When I turn on my vehicle and start to move, the dash says "stabilitrak active" and hesitates to accelerate for a few seconds. Then the message goes away and it drives just fine. Any ideas what this is and how to fix it without spending an arm...
  2. Slow acceleration

    OEM Issues
    Hi folks New to the forums so forgive me if this is posted in the wrong one. I have an 04 Trailblazer EXT LT 4x4 with the I6 and 177,000 miles. The problem I'm having progressively got worse over a period of a couple days after 2 trips of about 1400 miles total. I noticed at first while...
  3. Rpms rev up during shifting

    OEM Issues
    I have a 2005 Trailblazer LT 4x4 with the 4.2 I6. 158k miles Wife recently noticed (2-3 days ago) that the rpms have been fluctuating higher during shifting. I drove last night and confirmed. 35mph- 2500 starting rpms, shifts and goes up to 3000—3500 for a quick second and then settles back to...
  4. [SOLVED] Completely stumped

    I recently purchased a 2002 trailblazer, vortec 4.2L I6 LS 2WD. I have noticed that when you are sitting at a stop, and then quickly switch back to gas and begin to accelerate it seems to lose power for a second and then take off. this was the first issue I found until I was driving in town...
  5. Alternator Overload Concern

    OEM Issues
    For some time now my TrailLT has been into various shops and seems to have a ghost in the machine, literally speaking. Current Issues: Vehicle sits overnight in garage, goes to start and I always hear a squeaking noise under the hood. The belt is tight and was recently replaced, water pump was...
  6. 2002 Envoy - Can only describe as "wheezing"

    OEM Issues
    I have an '02 Envoy that has been giving me fits. A little history, a few years ago it started doing what I would call wheezing. Under acceleration, instead of a low smooth rumble, the engine would sound like it was under a much higher load (RPM's normal) louder and more of a high-pitched...
  7. high rpms, no acceleration, smoking from passenger side

    hello, i wasn't sure where to put this because i am not sure what is wrong. i was driving on the highway yesterday with my 2006 trailblazer 4.2 6cy 4x4. when i lost power in the acceleration. the rpm's were spiked and the engine was moving, but the car was not accelerating, it was idling along...
  8. nightmare!! help please

    ok so i woke up sunday morning, turn the key and heard a CLICK!, battery was dead. took it to the auto-part store and got a new one. put it in and the my truck turned on. the problem now is that when im idle or at a stop light the truck dis-accelerates(not sure of the term) but accelaration goes...
  9. Envoy hesitates on acceleration

    Engine Tunes/Mods
    Hi I have 2005 GMC envoy. When I start accelerating from stop, the car hesitates. This doesn't happen all the time, usually when the car has been standing still for atleast a few seconds. Any help would be greatly appreciated.