Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum banner


  1. Harmonic Balancer pull

    The "How-To" and DIY Section
    Hi all! I'm in the process of rebuilding my I-6 4200 engine in my 2003 Trailblazer, and out of several things that really irritated me, one of them was getting that darn harmonic balancer (crankshaft pulley) off!!! If you have to deal with this issue, you probably know there's very little...
  2. [SOLVED] Help! Pulley and belt issues..

    OEM Issues
    I purchased my 2003 GMC Envoy about 2 weeks ago and have already put a new alternator, two new serp. belts, a new idler pulley and a new belt tensioner.. with that being said.. The first week I shredded my old belt after hearing it squeal for about 3 days (which is why I bought a new one). We...
  3. HELP! Broke bolt holding tensioner pulley!

    This is my first time posting on the site, so bare with me. I have a 2004 Chevy Trailblazer LS, and earlier today I was working on tightening my serpentine belt when I accidentally broke the bolt that holds on the tensioner pulley. There is not enough room to get a drill down into the space...
  4. power steering pump pulley whine

    OEM Issues
    I have an engine whine that follows the engine's rpms, whine gets louder as rpm's rise. I have narrowed it down to the power steering pump after replacing the tensioner pulley and using a log screwdriver against the pump as the fiance reved it up for me to track down the whine. The pump has...
  5. Fan Belt Pulley / Tensioner bad?

    OEM Issues
    My 04 TB with 105K is making a pretty solid squeak (kinda like when you pull up to a stoplight and see some schmuck with a loose fan belt squealing like a stuck pig, although mine isn't that extreme, but now I'm that schmuck). Today I am going to take off the belt and turn that pulley by hand...
  6. New member with a question

    OEM Issues
    I just purchased a 2004 Trailblazer LS 4x4 with 88K miles. No sooner than I got it home, I noticed a rattle in the engine compartment. It seems to be at it's worse when the A/C is on. After inspection, I was sure it was the tensioner pulley on the passenger side of the motor because that is...