brake light don't work at all
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1994 GMC Vandura 2500 Question: how do I troubleshoot my1994 3/4 ton vandura conversion van's brake light proble
Answer #1jasong711 May 08, 2013, 13:26Rookie
First check your brake fuse for open. If o.k. then check your brake switch's power and ground circuits. If they are o.k. make sure the brake switch is adjusted properly. If no power out of brake switch it is probably a bad brake switch. If you have power out of the brake switch, make sure the bulbs and sockets are good and check the circuit from the brake switch to the brake lights.