Question about 1999 GMC Suburban

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Brake lights only show on center 3rd high stop tail lamp

I have a 1999 suburban and the brake lamps don't flash on the sides of the car, only on the 3rd high center stop tail lamp. I believe this problem started after using the emergency flashers and the emergency flasher button is stuck on the steering wheel. Does the emergency flasher block the signal? Some other cause? If this is the problem how can I unjam the flasher switch without breaking it? Thanks for any assistance!

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  • SKGAMMON Dec 04, 2008

    I have checked the connector under the bumper. I have power of the turn signals, running lights but no brake lights. This wire bundle appears to ru to the front of the truck in the frame rail but disappears/hard to trace at the firewall.

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Yes, the flasher does interrupt the brake signal. you do know that this is a push on, push off switch. Some try to pull this switch to turn off flashers, but, it has to be pushed again to turn off.

Posted on Jan 07, 2009

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