Could be the brakes are gone or it could be a hub and bearing assembly about to fall off the front of your car.
There could be different reasons the security light is coming on in your Chevy Trailblazer. The fuse could have blown or there could be a wiring short.
It could be coming from your heater core, may need to repair or replace it.
The grinding could be coming from the rear brakes.
Could be a right rear axle bearing going bad.
Could be the solenoid under the truck ...... come and read about the fixes at www.trailvoy.com Trailblazer enthusiasts forum!
There could be a few things that can cause this humming sound. It could be the wheel bearings rubbing, it could be the gears rubbing, it could even be coming from the engine pistons.?æ
Could be the fuse.
if its when you are breaking it is possible it could be a rotor if you hear like a roaring or grinding noise coming from that side also could be a wheel bearing
It could have the 4.2L L6 or the 5.3L V8.
The transmission in the Trailblazer could be low on fluid. The internal shifting mechanism could be giving problems as well, keeping the transmission from shifting into gear.
The outside temperature may be stuck on your Chevy Trailblazer because the thermometer may not be working properly. You can buy a new part from the manufacturer, but depending on the year, it could be expensive.
When service engine light is on on a 2003 Chevy Trailblazer, the problem could be a faulty thermostat, a circuit range performance problem, or any other problem.