gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Center Mounted Brake Lamp > < Diagnostic Charts
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Cargo Lamp: Testing and Inspection
Preliminary Checks

1. Check condition of CTSY Fuse. If fuse is blown, locate and repair source of overload. Replace fuse.

2. Check operation of dome and courtesy lamps, if inoperative, repair before proceeding with cargo lamp diagnosis.

Center Mounted Brake Lamp > < Diagnostic Charts