Question about GMC Sierra 1500
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Posted on Jan 02, 2017
I am asking you what switch you cheked and how did you know that is ok and working I had the same problem I replaced the switch under the brake pedal and it works fine if you still have this problem write to me @ firstname.lastname@example.org thank you good luck.
Posted on Feb 06, 2009
SOURCE: Brake Lights not working
The brake pedal switch on most cars or trucks is near the top of the brake pedal assembly where it pivots under the dash. As you move the pedal it releases the switch.
Posted on Jul 11, 2009
It's very possible to be the master cylinder, the o-rings on the piston could be worn, letting the fluid seep back through instead of getting full pressure through the lines. Could also be the brake booster.
Try changing the master cylinder first, which is cheaper and easier, and see if there is a difference, you'll need to bleed the brakes again.
To check the booster,
With the engine off, pump the brakes until the pedal is hard, then hold pressure on the brake pedal and listen for air escaping, or the pedal goes slowly to the floor, Do that after the master cylinder has been changed, at least that will be eliminated.
Posted on Sep 15, 2009
Testimonial: "Hadn't thought about the O-rings on the rod thanks for the idea. Great Idea Thanks!"
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