Why is the shift button not working on my TrailBlazer LT?
Why is the shift button not working on my TrailBlazer LT? The shift button on the shifter could not be depressed with key in run and foot on brake pedal and the shifter could not be moved out of the park position. What to do if your Trailblazer won't start? Boosting/jumping the battery no longer helps. I can jump and start the truck by jumping across sockets 87 and 30 of the starter relay sockets and the truck will run. I checked the ground from socket 85 to vehicle chasis and the resistance is zero. Now I am leaning towards...