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1999 GMC: MY BRAKE WARNING LIGHTS COME ON..abs LIGHT..HYDRAULIC…

Customer Question
I HAVE A 1999 GMC...
I HAVE A 1999 GMC 6500 AND NONE OF MY BRAKE WARNING LIGHTS COME ON WHEN THE KEY IS TURNED ON EXCEPT F0R THE ABS LIGHT IT IS GAS MOTOR AND HYDRAULIC BRAKES
Submitted: 8 years ago.Category: Heavy Equipment
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Answered in 17 hours by:
6/25/2010
Technician: john, Technician replied 8 years ago
john
john, Technician
Category: Heavy Equipment
Satisfied Customers: 9,176
Experience: 40 years automotive repair experience & GM truck repair
Verified

Hello & Welcome to JA,

 

Your problem can be a faulty instrument cluster or a computer.I suggest you have the computer scanned for data & fault codes.

A scan tool has "output tests" which can be used to turn the lights on & off to check for circuit & bulb operation.

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