Question about 2000 GMC New Sierra 1500

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I have a problem on my 2000 GMC the ABS & brake lights come on and go off. mech says it is electronic control module.I can hear a scrubbing noise when applying brakes . Mech checked misc modules in fuse panel under the hood .the stated it was the electrical control module mounted on the frame. Since these are high dollar items is ther a way to be sur this is the problem

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Make sure its not the brake master cylinder and before anything or definitly check your brake fluid..

Posted on Sep 26, 2009

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I HAVE A 2009 GMC ACADIA WHEN I HIT A BUMP THE CHECK ENGINE LIGHT COMES ON , THE ABS LIGHT COMES ON AND STABILY TRACK LIGHT COME ON WITH A TROUBLE CODE U073 AND A U121


U073 is a communication code from one module to another to simply put it. Code U073 refers to a communication problem with the electronic brake control module ( Which controls ABS/Traction and stability ). I would suspect a loose connection/shorted wiring or even possible internal problem with the brake control module.If the issue occurs after hitting a bump, most likely a loose connection or the wiring rubbing somewhere causing a short from the brake control module.

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The noise you hear from the brakes? is it a scraping grinding noise? if so your metal to metal on one or more of your wheels and that can cause the ABS to mal-funtion. If the brakes are good then it sounds like the ABS module is failing. I wouldn't remove the fuse because other systems may be relying on that fuse to work. Find the ABS module and dis-connect it. To find out more information on your ABS system go to your local library.

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I have a 2000 GMC Sierra. Brake Light and ABS warning light comes on frequently. Sometimes it's there othertimes not. Have replaced the sensors, replaced rotors and pads, cleaned gound on the frame...


I would recommend checking for diagnostic trouble codes in the ABS system. If there is a diagnostic code C0265 set, then you're most likely looking at an ABS computer replacement. This is a common failure on these trucks. GM calls this computer an EBCM, or Electronic Brake Control Module. This is the controller for antilock brakes and is mounted directly to the ABS pump motor assembly. Last time i checked, these things were going for about $900 at the dealer.

Aug 08, 2011 | 2000 GMC New Sierra 1500

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Abs light is on


When the ABS (Anti Lock Brake System) light is on it means the systems control module has detected a failure and the ABS is disabled, this means you just have regular non ABS brakes. To find out what the fault is requires the ABS control module be scanned with a special tool to see what fault codes show up.

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1 Answer

I ve got a kalos 1.4sx 2008 and i ve got problems with the brakes. The brakes ''crunch'' when i m bringing the car to a halt,even on dry roads. The abs warning light has been on a couple of times but...


The Chevrolet/GM autos rely on a Kelsey ABS actuator system that is electronically controlled. I know its hard to describe sounds, but is it possible the crunch is a hum? If the ABS light comes on and goes off after restart it means one of two things. That the ABS controller is going bad or the speed sensors on the wheels have come loose or gone bad. Under your hood there is a fuse compartment that contains the fuse that controls the ABS system on your vehicle. Its a 60 Amp fuse and large.. Look in your owners manual for its location. . Check it with the vehicle OFF to make sure its not blown or cracked. Leave the fuse disconnected and start the car. The ABS light should STAY on as well as the parking brake light. Test your brakes by pressing down on them while the car is in park and not moving.. do you hear the sound. If you DONT hear the sound then the ABS control module is causing the brake pump to work continuously and thus your "noise". YOu can confirm by placing the fuse back in place and then listening to the car about where the drivers door is... do you hear a hum? If so you can leave the fuse disconnected to deactivate the ABS module. The brakes will still function you just WONT have ABS capability. Confirm this with a very slow roll from park or neutral and press brakes to stop. If you dont hear the noise or a hum, reconnect the fuse and take the car for a drive. Turn to the left and right while applying the brake at an intersection.. vehicle in motion slightly. Do you notice that the ABS light or noise occurs turning one way or the other or both? If it comes on during the turn then the ABS sensor in that wheel or both wheels need to be inspected and possibly replaced. Finally, you need to inspect the brake pads for wear..typically however brake pads have WEAR INDICATORS built in and will start to SQUEAL when you apply the brakes telling you time to replace pads. If its a squeal and not a crunch then have pads replaced. Finally, be sure and make sure you dont have any rocks or road debris within the brake area or between teh pads and the rotors. That would be your final area to review for a CRUNCH noise.

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The ABS module when active makes noise when it is trying to control the vehicle by applying "leave" and "press" mechanism. If the lights are coming on , it is possible that the ABS needs to be fixed. Take it to the authorized service centre to electornically diagnose and reset the codes.

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you have to fix the problem with ur brakes- first check the wiring ,connectors and connection clips to the abs sensors and modulator if looks ok than have truck scanned some auto stores such as auto zone / advanced auto do it for free the code will give u a start point towards fixing ur problem--visual inspection of brakes doesnt always show problem

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1 Answer

The abs light is off 50% of the time and on 50% of the time. when it's on it blinks. how do i fix it? brake pads and disks have been replaced.


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The ABS consists of a control module, pump & sensors.
Without having a scan tool to check to see which code is set you can't fix it.
Anytime one of the components listed above fails or is having a problem that will send a signal to the EBTCM (Electronic Brake Control Module) which cause the ABS light to come on.
You can spend thousands of dollars replacing parts before you get it right, and the light would still be on because you need the scan tool to clear the light once the problem is fixed.
It would be best to find a trusted mechanic to scan the codes & diagnose the problem.

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Traction conrtol , abs brake lights lincoln ls 2000


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dont guess !! get it plugged into a scanner and see what the code is

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