Having problems with your Chevrolet C1500 ?
The circuit board on my 98 silverado keeps melting on the turn signal/brake light bulb. It's the left rear, I have replaced it 3 times is there a short causing this?
I would chase the black ground wire to the frame first. It usually melts because the ground isn't tight, is corroded or high resistance. The ground wire and circuit board will generate a lot of heat when there is high resistance, and the circuit board will melt first. Check right at the connector going to the circuit board, quite often there are signs of poor connection or even the terminals melted there.
Repair Help & Product Troubleshooting for Chevrolet C1500
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