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View Full Version : Stop Lights on gmc truck


vetbob
Apr 2, 2007, 05:48 PM
I have replaced bulbs, switch and fuses. Still no stop lights. What's my problem?

Thanks, Bob

ace-tilley
Apr 2, 2007, 06:59 PM
Have you tried to see if your wires for your stop lights have come loose.

TxGreaseMonkey
Apr 2, 2007, 08:31 PM
Several thoughts:
. Test all under-dash and under-hood fuses with a test light or multimeter. Here's how:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-honda-civics-46563-3.html#post252145

. Check brake light switch adjustment.
. Remove the bulb, have someone depress the brake pedal, and check for voltage in the brake light connector using a test light. If there's no power, check for an "open" in the circuit.

waynesworld
Apr 10, 2007, 05:24 PM
Don't know what year truck it is, but a friend of mine had similar problem on '98 gmc and turned out to be ground wire coming from back of taillight housing-to-frame.