Question about 1999 GMC Suburban

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BRAKE LIGHTS DON'T WORK I REPLACED A BRAKE SWITCH AND CHECKED FUSES INSIDE VICHICLE AND CHECKED BULBS

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  • GMC Master
  • 5,316 Answers

Have you looked under rear of truck for broken wires? Anyone ever installed trailer wiring? Check at brake switch for juice.

Posted on Jan 13, 2015

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  • 2 Answers

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Posted on Jan 02, 2017

stormbrewin
  • 426 Answers

SOURCE: 98 gmc suburban brake lights

One of two things cause this corroded or poor chassis earth at the bulb holders or the circuit board that holds the bulb is faulty.

Posted on Nov 19, 2008

  • 99 Answers

SOURCE: location of brake light activation switch

check at base of steering column for switch

Posted on Nov 30, 2008

cadman000
  • 607 Answers

SOURCE: bottom brake lights and hazard lights do not come on. All other lights work including top brake lights. Fuses and bulbs checked.

Check for power out of brake light switch by brake pedal. Of its faulty , the 3rd brake light will still work. Hope this helps

Posted on May 23, 2009

  • 9 Answers

SOURCE: no brake lights or backup lights

Did you check the back-up switch on the tranny, or the grounds??

Posted on May 27, 2009

  • 104 Answers

SOURCE: No brake lights on 95 Suburban

Disconnect electrical connector to brake switch brake located near brake pedal. Check for twelve volts or power with a test light on one side. If power, get a piece of wire, strip the ends and plug into each end of connector. If brake lights works, switch is bad. If not, check bulbs and power in the brake light socket. If no power, check to make sure power is leaving the trafficator switch as the brake light switch is depress or bypass. Check for broken or bad connection along circuit. If all good, you could have a trafficator switch problem. Oh, are the hazard and trafficators working in the rear? If they are, the trafficator switch is bad because the brake switch sends power there, then out to the back through the left and right rear trafficator wires.

Posted on Jun 14, 2009

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Hope this helps

Matt

Jul 02, 2009 | 1999 Ford Expedition

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