SPONSORED LINKS

Brake lights

Tiny
BJ149
  • MEMBER
  • 1998 GMC SIERRA
  • V8
  • 2WD
  • AUTOMATIC
  • 190,000 MILES
I CHANGED THE MOTOR AND TRANSMISSION IN MY 1998 GMC SIERRA 1500 AND NOW WHEN I TURN THE KEY ON THE BRAKE LIGHTS COME ON. WITH THE KEY ON IF I PRESS THE BRAKE PEDAL THE LIGHTS GO OFF. WHAT COULD BE THE PROBLEM?
Saturday, March 19th, 2011 AT 3:52 AM

2 Replies

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Brake lights or running/tail lights? Check under the dash for pinched wires coming from the brake light switch.

Check for shorts in the harness with a multimeter. Disconnect the battery and remove the brake light bulbs. Probe one contact in the brake bulb pigtail and go to ground with other probe. Resistance should be infinite. If not, you will need to trace the wires and find where the short is.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Saturday, June 18th, 2011 AT 10:38 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Is the high mount brake lite coming on too? If not unplug the turn and hazard switch and see what happens to the lite
Was this
answer
helpful?
Yes
No
Saturday, June 18th, 2011 AT 10:56 PM

Please login or register to post a reply.

Related Brake Light REPLACE/REMOVE Content

VIEW MORE

Sponsored links