Having problems with your 2003 Chevrolet Avalanche ?
Driver door ajar alarm keeps going on and off as I am driving and the door locks keep clicking on and off. This only happened occasionally, I sprayed WD-40 in lock area and it stopped for a few weeks. Now, they just keep going on and off. The horn also will randomly go off now when truck is parked and off.
This sounds like a bad door switch,if you replace the switch i think it will solve all these problems,the switch is locted on the latch asm,remove the door panel,mark and remove the linkage,then unplug connectors,then remove screws holding latch,remove the latch and then remove switch,it comes out by twisting,and then pull up,to install new one,line up slots push in and turn to lock in place,good luck.
Repair Help & Product Troubleshooting for 2003 Chevrolet Avalanche
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