Question about GMC Cars & Trucks
Sounds like on reassembly , not enough care was taken and the brake pad has become dislodged( installed incorrectly with the metal back facing the disc ) allowing metal to metal contact with the rotor
take it back for rework before serious damage is done to the rotor
Posted on Aug 09, 2017
What is question screeching possible metal to metal --and you dont get a warning light or any light when brakes are low [for fluid only ] also no spring in front brake system only spring in area is attached to strut so you information is not making any sense
Posted on Aug 09, 2017
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Posted on Jan 02, 2017
SOURCE: Front Brakes
Interesting, disc brakes don't normally stick. Since there is no tension pressure against the pads like drum brakes.
You indicated you replaced the right caliper and the master cylinder, but no mention of the disc or the piston (Some caliper assemblies are all in one, some are not.)
Here are some thoughts:
Disc is contaminated with oil, grease, brake fluid etc, when you brake, it is absorbed by the pad, gets hot and sticks.
You didn't replace left caliper, piston isn't working well, sending all pressure to right side.
You didn't indicate, new, used or rebuilt caliper. If used, get anew/remanufactured SET of calipers and either semi-mettalic or ceramic pads, and new rotors (I used to get rotors turned, but new replacements are now generally cheaper that turning old ones. When working with brakes I always recommend you work them as a set, regardless of how good the other side looks.
Make sure you clean the rotors with a solvent to ensure any grease or anti-rust agent is removed and dry will with several paper towels.
When installing pads, ensure you do not touch the braking surface of the pad or the rotor, body oil can contaminate too.
Make sure that the siding surface of the caliper is lubricatred with silicone grease designed for calipers (little packets are available at your parts store) On my GM Cars, it is the bolts that mount the caliper, but this varies by caliper design
Hope that is
Posted on Jul 03, 2008
SOURCE: brake light switch
In the 04 models there has been a recall on a part in the brake lights. You can look it up and it gives you a number to call GMC. If you truck is one of the affected models they will replace it for you.
Posted on Jan 28, 2009
well here's a start towards ur problem, due to the auto circuits u have an open return to the negative side of the battery. Have you done anything with the vehicle's systems before this started? the reason fo the strange lighting is that a positive voltage is being applied to what normally would be return side. You will need to get an electrical diagram if possible to pin point area if as previously asked didn't occur.
Posted on Mar 02, 2009
Disconnect the positive lead on battery wait about 30 seconds and reconnect. Take it out somewhere where you can floor it and go through the gears a couple times. This will clear error lights and establish a new acceration curve. If the error comes back then start looking for loose connections or alignment problem for abs stuff.
Posted on Mar 25, 2009
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