I think u can just use the key turn it all the way on then all the way back to excessories then on agin do it like 4 or 5 times within 5 sec and youre codes should be displayed on the odomitor/trip
check fuse
check the recalls alot of problems with the trans
location for 2003 chevy trailblazer coolant temperature sensor
how do you set the clock on a 2003 chevrolet trailblazer
Where is the input aux for a 2003 trailblazer
How do I reset the service engine light on a 2003 Chevy Trailblazer?
Where is the neutral safety switch on a 2003 trailblazer?
need help changing the belts on my Chevy trailblazer lt 2003
Specs for main bearings on a 2003 Chevy trailblazer with 4.2 engine .
No
A eaton fuller 18 speed roadranger gearbox is used
try this website --->www.trailvoy.com<--- they have alot of stuff to help you with your trailblazer i should know im a member my self i have a 2003 Chevy trailblazer Lt www.trailvoy.com