1997 GMC Sierra brake lights

1997 GMC SIERRA
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CAROLLCOOPER
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Electrical problem
1997 GMC Sierra 6 cyl Two Wheel Drive Automatic

The brake lights on the vehicle work when it is not running. As soon as you start the truck the brake lights go out. They will flash on for a second when you step on the brake pedal and then shut off.
May 16, 2010 at 3:17 PM
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