1999 GMC Sierra electrical

Tiny
BIG J TRUCK
  • MEMBER
  • 1999 GMC SIERRA
  • 280,000 MILES
Changed heater core in my truck now I lost power to brake lights have running lights. Signals but no brake light when brake pedal is pressed changed the plug at brake pedal to find there is no power there is this due to taking apart the dash I had power before I changed the heater core
Friday, October 25th, 2013 AT 4:51 PM

1 Reply

Tiny
MADMIKE1735
  • MECHANIC
  • 951 POSTS
This is almost impossible to walk you through online. Something didnt get hooked up along the line here. Or a wire is pinched. Did u remove the steering column, or cheat, and let it rest on driver seat? I ask only becuase to remove the column, you need to disconnect 2, or 3 harnesses to the column. 1 I believe is on the circuit for brake lights. Its been a couple years since the last one I done, but I am almost positive this happened to me, and it was a simple fix. Left something unplugged under driver side of the dash.
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Friday, October 25th, 2013 AT 5:14 PM

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