1999 GMC Sierra Repair Question
Topics covered: Auto parts, Frame, Rust.
Mileage: 200,000 miles.
Mileage: 200,000 miles.
Asked on March 2, 2013
GMC Sierra Auto parts Problem
Can you show me brake light wiring harness diagram for a 1999 GMC k1500 4 wheel drive 5.7
Asked by (pending member)Answer
Replied on March 2, 2013
this is about the best i can do as they are really small. the white wires are power going to t/s switch and overhead cab brake light then it's yellow and green for tailgihts from t/s switch. also check at rear of frame for ground for all lights they get rusty,dirty and loose contact. try that first. also ther eis a circuit board that goes bad in tailights that is available at auto parts
