Question about 1999 GMC Sierra
Have triple checked and emergency brake is not engaged
Check oil brake level. or disconnect switch wire at master cylinder
hope it helps
Posted on Mar 20, 2014
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Posted on Jan 02, 2017
Did the peddel go to the floor when the breaks went out before you replaced pads and lines? If it did than its the master cyl. If you replace the master cyl. yourself just remember you have to bench bleed it before you install it. The new master cyl. will come with instructions on how to do that. The calipers will not do what you discribed unless they have a major leak. Also after you install the new master cyl. chanses are all the breaks will have to be blead, starting with right rear, left rear, right front, left front. In that order.
Posted on Apr 08, 2009
There's a ratchet in the top of the pedal which holds the pedal down when depressed. This ratchet is worn, broken, loose, or it just needs lubricating. I would first try WD-40 on the top of the pedal where it attaches to the frame/chassis.
Posted on May 09, 2009
gm puts both those on 1 fuse! check your fuses!!
Posted on Sep 16, 2009
Testimonial: "I found the bad fuse, replaced it, and presto - the lights are all now working properly !!!! Thank you"
Well this could be numerous things..
Does the vehicle make any kind of noise when you try to shift it into 4x4? Do the dash lights on the push button shifter light up?
It is very common for the transfer case shift motor to go bad on these. They are located on the side of the transfer case by 3 or 4 10mm bolts. Another possibility would be the plunger on the front differential is bad. This is located on your front carrier assembly. It screws right into the side of the housing.
If you aren't sure I would take it to a good shop and mention these 2 things and they will take care of you.
Posted on Dec 21, 2009
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