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.
Identifying the problem you're having with it would be a good start.
yes,4 separate bulbs,2high beam-2 low beam
Yes it is 11 years old now.
Possibly the multifunction switch (switch in columm). Check the bulbs, fuses etc first
A 2003 Chevy Suburban will crank but not start if it has no spark or fuel. Checking for a clogged fuel filter or fouled spark plugs can help to resolve the problem.
Does the car have fog lights? I have a 2003 Sunfire that the high beams would not work on. This was caused by a short in the fog light wiring. I had the fog lights rewired separate from the harness (about $100) and the problem was fixed.
Problem with the emission system have vehicle scanned to determine the problem
intermitting problem with no power at drivers door
Check your charcoal fuel canister. I had the same problem changed the light went out. The problem fixed.
P1441 indicates a problem in the EVAP control system.
The RPM is not working on 2002 chevy impala LS. transmission and engine sounds good- no problem. what's wrong