One problem related to wiring has been reported for the 2003 Chevrolet Silverado 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Chevrolet Silverado 1500 based on all problems reported for the 2003 Silverado 1500.
When the truck is cranked and at idle and in motion the headlights and all panels blink. The light on the panels do not completely go out but it dims. The headlights have went completely out a few times while in motion. When the interior light is on it also blinks and dims. At times the radio goes haywire and starts going through all of the stations. The headlight connectors have been replaced and we noticed that the wiring that goes to the headlights is very brittle and where the connectors plug into the bulb were burnt and the prongs on the bulb were also burnt and melted. This has been going on for some time and we can't seem to find what is causing all of these problems. The driver side window,door, and mirror panel only halfway work. Sometimes the driverside window will go down and sometimes it won't the driver side panel will not control the passenger side mirror, lock, or window either. The passenger side window and lock panel will not work either.