general problems of the 2004 Chevrolet Colorado

The ignition will not start at first. It takes multiple times in order to get the engine to turn over. Once the ignition does cause the engine to turn over, the vehicle will suddenly lose power while driving as the vehicle shuts itself off (as if the ignition has been turned off although it has not been). This has happened on multiple occasions in the course of normal driving activities, several times while crossing busy intersections which luckily has not resulted in any crashes to date, but may very well result in a potentially fatal one should it continue to occur. Engine has been tested and all systems check out, except for the ignition switch which -will- have to be replaced.

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.