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  1. [SOLVED] 02 GMC Envoy - Coil misfire, coolant leak NOT SOLVED

    The 02-09 "How-To" and DIY Section
    Hi, I bought an 02 GMC Envoy only 3 months ago at 235,000km. I wasn't expecting it to be perfect, the entire time I've had it the belt has needed replacing (haven't had the time) because it squeaks but that seemed to be the only issue. I'm now noticing that I have to top up my engine coolant...
  2. )& TBSS proper engine temp.

    Engine Tunes/Mods
    Hey Guys! I have been using TV to do all the work on my 2003 Tb LS 4x4. Just last week I Purchased a 2007 Trailblazer SS and have decided to become an actually paying member of this website. It has helped me so many times & I would like to give some information back to new TB owners. I have a...
  3. trailblazer reduced engine power

    General
    I have a 2004 Chevy Trailblazer w/ 150XXX miles. its been acting crazy it drives fine when the weather is cold. no problems. when the weather is over 65 degrees is when it seems the problem starts. I had about 10 codes and they all had to deal with the (TPS) in different readings I purchased...
  4. How to Replace ECT Sensor and Thermostat 2004 Trailblazer 4.2

    Engine Tunes/Mods
    First this is my first post, please forgive me if I use laymen terms whereas I am not a mechanic. I got a DOCII P0128 Error 2 weeks ago, it cleared and re-popped about a week later. For a 2004 Trailblazer 4.2 this code points to temperature problems related to the thermostat or ECT (Engine...
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