general problems of the 2004 Chevrolet Colorado

One day, after I turned my truck off, I noticed that my taillights and overhead cargo light remained on. Key was out, truck was off, but the lights stayed on. So for the time being, I disconnected the battery. I brought it to a mechanic, who ran the codes that came back that the rear driver turn signal was high, the rear passenger turn signal was high, and the overhead cargo light was high. He checked the entire truck for a short, replaced the taillights, replaced the fuse box, replaced the body control module, and numerous other attempts at a repair, with no success. I was without a vehicle for many months, since I can't afford the absurd prices of the current vehicle market and was hopeful it could be fixed. Reading through some other complaints/online threads, this seems like a fairly common problem with these vehicles. Electrical issues that affect my ability to use a turn signal are a huge safety concern and this needs to be addressed.

Wires in the harness which pass from cab to left rear door break. The break disables the seat belt lock up mechanism. A broken wire causes the air bag readiness light to illuminate. The door open and close switch is inoperable. The left rear stereo speaker does not work.

Dashboard lights randomly go off or flicker. The a/c and heater/defroster blower stops working randomly or for an entire day at a time only to work the next day and then quit again. The a/c heating fan blower does not work on speeds 1,2, or 3, only on speed 4. I have had the wiring harness replaced numerous times only to have the problem continue again. The mechanics never can seem to find the problem until we get to the harness where there is always a burned wire. They replace it and just like this last replacement, within the week the problems returned.

All brake lamps failed to illuminate. Recall # 06v139000, gm replaced brake lamp switch assembly. Failed after recall repair completed.

The dashboard lights will stop working if your driving at night and turn the car off and then turn it back on. They will not work until the car sits for a long period of time. This started soon after buying the car brand new, but the dealership couldn't find anything wrong. Second complaint, the heater/air conditioner fan had an electrical fire at where the harness plugs into the fan motor. The fan will only work on high. When I looked online at other complaints about the same problem, I unplugged the fan and noticed the plug was burnt. I have photos that I can send. It appeared the electrical fire continued down the plastic plug to where the wires are exposed. This could have been a major incident if I didn't notice it. There are a lot of complaints about this with Colorado trucks online. Also when driving at night, my dash lights and instrument lights flicker as if there is another electrical short somewhere in the wiring harness.