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  1. 02-09 General Tech Q&A
    I drive a 2003 Trailblazer LT. I love the truck, it's a heck of a machine but it is falling apart on me. About three days ago when I started my TB the fan sounded really loud. When I put it in gear and accelerated the fan was speeding up and getting louder. Not gonna lie it sounds pretty cool...
    code computer fan clutch headlights misfire
  2. OEM Issues
    Hey everyone, New to the site, but I've been searching random threads for quite some time. I have a P0016 that I've been fighting and I figure I'd throw it out to the experts in the biz. I have multiple techs looking for answers and no one seems to be able to find the reasoning behind the...
    ckp cmp code p0016
  3. General
    Yesterday was 90 Degrees with 90% relative Humidity. When Running the AC, my engine Temps according to the scangauge were ranging between 204 Degrees at cruise and sitting in traffic on the mass pike, and as high as 215 Degrees While WOT up hill passing a truck. Shut off AC it runs 195-197...
    code coolant temperature
  4. OEM Issues
    I am new to the group so first I would like to say hello to everyone. I just got back from hooking up my 2004 GMC Envoy XL to the computer reader at Checker. I got a few codes and I think I may know what they are but I thought I would post them here to be sure. I am making a trip from Colorado...
    code crank shaft manifold throttle body
  5. General
    I am new to the group so first I would like to say hello to everyone. I just got back from hooking up my 2004 GMC Envoy XL 6CYL to the computer reader at Checker. I got a few codes and I think I may know what they are but I thought I would post them here to be sure. I am making a trip from...
    code crank shaft envoy xl manifold throttle body
  6. General
    -------------------------------------------------------------------------------- I replaced my ECT (electronic coolant Sensor) after reading my code that it was bad. Two weeks later the engine light came back on and read the same Code.... I checked my other sensor plugs and added electrical...
    2003 trailblazer code ect electrical sensor
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