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timing chain

  1. stripped timing chain guide bolt

    The 02-09 "How-To" and DIY Section
    I feel stupid asking this, I need to know the easiest way to get the timing chain guide screw. I took on the task of changing the head gasket on my 2004 Chevy Trailblazer V6 4.5L. I'm down to this last bolt and we will be able to get to the gasket. I say we because I have to get my brother to...
  2. Rattling noise (not piston slap)

    02-09 General Tech Q&A
    My trailblazer makes a loud rattling noise that sounds like a dancing gear or a dancing belt hitting something/rubbing on something. It's coming from the very front of the valve cover, the truck runs fine and doesn't have any issues, it just makes a concerning noise. Note: I'm running it with...
  3. 2006 chevy trailbazer P0017 not running rough/stalling

    OEM Issues
    alrighty so, I have myself a 2006 trailblazer. going in for inspection, it has a code P0017 for crankshaft position. the cam actuator, cam position sensor, and crankshaft position sensor were all replaced, but to no avail. then after some googling, people were saying the timing chain could have...
  4. New timing chain and oil pump?

    Engine Tunes/Mods
    Alright, so I have a trailblazer engine I bought with 99k miles on it because I gave up repairing my trailblazer engine, I have the engine out and I have a new timing chain and oil pump, should I change them before I put the new engine in or should I just drop the engine in?
  5. Envoy is Dead...

    Hey all, The timing chain snapped on my 2003 envoy and cracked a cylinder. It will be missed. I will be trading it in for a 2004 subaru wrx sti. Thanks for all the help! :thx
  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...