Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum banner


  1. Spark Plugs on 2003 TB Ext with Vortec 5.3L V8

    Air Induction
    Hi Everyone, My 2003 TrailBlazer EXT with Vortec 5.3l V8 Engine has just reached 80K miles and I'm considering changing the spark plugs but could not figure out where they're located and how hard it is to change them. I saw some posts helped to locate the spark plugs on TB 4.2l/V6 but the TB...
  2. Which Transfer case???

    4x4 Drivetrain
    Hi all, Can anyone tell me which transfer case my SAAB 97x 5.3 has? It is fulltime AWD. I am hoping it is the same Torsen as is used in the TBSS. So, Anyone have the answer? Thank you, NTRSANDMANN
  3. Misfire Since the Dealer Changed My Plugs

    OEM Issues
    Hi everyone! Just joined Trailvoy yesterday - I'm loving the site. Got an '04 TB EXT with a 5.3L, about 140K km (87K mi). I didn't have time to change the plugs so I sent it to the dealer with plugs I bought (maybe that ticked them off) a set of Champion platinums. Got it back, they said I...