Diagnostic Aids
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
- Perform a visual inspection for loose or poor connections at all related components. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS .
- A short to ground in the following circuits will cause the Flasher fuse to open.
- Left rear stop/turn lamp supply voltage
- Right rear stop/turn lamp supply voltage
- Left DRL/turn supply voltage
- Right DRL/turn supply voltage
- Left turn signal indicator lamp supply voltage
- Right turn signal indicator lamp supply voltage
- Battery supply voltage from the underhood fuse block Flasher fuse
- An open in the Flasher fuse will cause the DRL, turn signals and the hazard flashers to be inoperative.