The easiest way to spot the EXT models is the rear wheel is behind the rear door and the rear door appears almost full sized, on the standard wheelbase models the rear door handle is over the rear tire and the door is notched in the lower rear area around the wheel opening.
245/70/16 www.trailvoy.com Trailblazer enthusiasts forum!
Standard 4.2L had 275 hp. A Trailblazer EXT had a optional 5.3L which had 290 hp.
Any colour you wish.
pie
The rear blower motor resistor location for a 2003 Chevy Trailblazer Ext LT is beneath the passenger side of the dash.
heat/ac actuator
it could be the idler puller rubbing on the bearings. we had to replace it on our 2006 Chevy trailblazer ext.
pie
Dexron III Automatic Transmission Fluid
The PCM has to be reprogrammed by a tuner. www.pcmforless.com www.trailvoy.com has all the answers in real time.
The EXT stands for Extended model, which means it has a third row seat.
Because there is a known issue with the brake lamps on the 2003 Trailblazer. I own a 2003 Trailblazer and had to take it in for service on a recall due to the issue. Take it to your Chevy dealer and have them check the VIN to see if the recall was ever done.