Question about 2005 Chevrolet Silverado

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Abs light problems

My abs and regular brake lights come on randomly, but go off if i turn the key off then back on. also my cruise control will not work at times are these problems related or does anyone have any ideas?

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  • Chevrolet Master
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I HAVE SEEN A BAD BRAKE LIGHT SWITCH CAUSE THE ABS AND BRAKE LIGHTS TO COME ON.BUT TAKE IT TO A DEALERSHIP.BECAUSE YOU COULD BE HAVING BRAKE FAILURE THE.ABS BRAKES MAY NOT BE WORKING.LET THE GARAGE OR DEALERSHIP SCAN IT. AND FIX.

Posted on Sep 13, 2009

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Posted on Jan 02, 2017

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2005 chevy trailblazer - no cruise control and brake lights only work when key is turned off


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Abs and brake lights are on


If both the RED brake light and the ABS light are coming on while you are driving the car, you either have an hydraulic failure or there is a problem with your ABS module that can potentially affect your regular service brakes.

The first thing to do would be to check the fluid level in your brake master cylinder. If it is low, you need to find out WHY. There is always a reason for the fluid level to be low. It is NOT SAFE to just add fluid without correcting the problem that caused the fluid level to be low.

If the fluid level is OK, then you must scan your antilock brake module for fault codes. The antilock brake module controls the antilock light and can affect the RED brake light as well. There are many different possible failures that can cause this. There is NO OTHER WAY to know why the antilock module has turned the light on. You can spin your wheels for days, replace a BUNCH of parts and never find the problem if you do not scan the module first.

Dec 08, 2011 | Cars & Trucks

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The cruise control just quit


By removing the ABS brake fuse you are disabling other components as well. The ABS fuse supplies voltage to the brake switch that tells the ECM and ABS module the the brake has been applied. If neither of the modules can see the brake switch the cruise control will be electrically disabled. You need to reinstall the fuse.
Let me know.
Regards,

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ABS LIGHT AND BRAKE LIGHT STAY ILLUMINATED


As far as the cruise control look under the battery, drivers side one if a diesel and there is a vacume line for the cruise. This vacume line always breaks right under the battery causing the cruise not to work.. Ive owned 2 2nd gen dodges with non working cruises and this was the problem on both.

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1999 oldsmobile alero the traction and cruise not working


use a scanner to check the abs system . most of the time the abs brakes and traction control system work together. your cruise control . unit has a servo motor .in front right fender well. check the fuse and relay also the cruise control brake release switch. and the brake light switch.if all is good you have a cruise control module problems. dealer ship job.

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1 Answer

Problem with my cruise control and ABS light on 03 Explorer


Anti-Lock Control —Vehicles Built After 03/2002 The 3-channel anti-lock brake system consists of the following components:
  • front wheel speed sensors
  • front wheel speed sensor rings
  • hydraulic control unit (HCU)
  • Anti-lock brake control module (ECU)
  • rear wheel speed sensor
  • rear wheel speed sensor rings
  • yellow anti-lock brake warning indicator
The 4-channel anti-lock brake system with traction control and stability assist system consists of the following components:
  • active brake booster with integral solenoid
  • brake booster release switch
  • front wheel speed sensors
  • front wheel speed sensor rings
  • hydraulic control unit (HCU)
  • stability assist module (ECU)
  • stability assist event indicator
  • lateral accelerometer
  • longitudinal accelerometer (4x4)
  • rear wheel speed sensors
  • rear wheel speed sensor rings
  • steering wheel position sensor
  • yaw rate sensor
  • yellow anti-lock brake warning indicator
  • brake pressure transducer
  • traction control switch
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I suspect the abs issue is causing the speed control not to work if it happened at the same time the cruise control stopped working. When the yellow ABS light comes on, it means the ABS is dactivated. You may have a faulty accelerometer which senses acceleration and yaw (side to side lean). I have not seen a bad one but you said it is sensitive to acceleration.
I would unplug it and see what happens. The connector should have a small tab to depress so you can pull the connector out.
Here is where it is:

Accelerometer Removal and Installation
  1. NOTE: The accelerometer is located under the center, rear passenger seat carpet. (I think you have to remove seat for access).
    Cut the carpeting along the perforations.
  1. Disconnect the electrical connector.
  1. Remove the nuts and remove the accelerometer.
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Have dealer hook up tester and pull fault codes if you can't find an easy solution.
Some background info
  • A malfunction in the anti-lock brake system will cause the anti-lock brake control module to shut off or inhibit the system. However, normal power-assisted braking remains.
  • Malfunctions are indicated by the yellow ABS warning indicator in the instrument cluster.
  • The anti-lock brake system is self-monitoring. When the ignition switch is turned to the RUN position, the anti-lock brake control module will carry out a preliminary self-check on the anti-lock electrical system indicated by a three-second illumination of the yellow ABS warning indicator in the instrument cluster.
  • During vehicle operation, including normal and anti-lock braking, the anti-lock brake control module monitors all electrical anti-lock functions and some hydraulic operations.
  • Each time the vehicle is driven, as soon as vehicle speed reaches approximately 20 km/h (12mph), the anti-lock brake control module turns on the pump motor for approximately one-half second. At this time, a mechanical noise may be heard. This is a normal function of the self-check by the anti-lock brake control module.
  • Pedal pulsation coupled with noise while braking on loose gravel, bumps, wet or snowy roads is normal and indicates correct functioning of the anti-lock brake system.
  • Warning Lamp Indicator
    The anti-lock brake system (ABS) uses the yellow ABS warning indicator to alert the driver of a malfunctions in the ABS.
    The yellow ABS warning indicator will come on to warn the driver that the ABS has been turned off due to a symptom that exists in the ABS. Normal power assist braking remains but wheels can lock during a panic stop while the yellow ABS warning indicator is illuminated.

    -----------------------------------------
    Please report back, I am curious if that is what it is. Good luck

    Mar 03, 2009 | 2003 Ford Explorer

    1 Answer

    Random lights coming on in the dash and stalling occasionally


    See if you can find out if there is a code for the check engine lite and the abs, those can be related if the speed sensor located on the top of the rear axle is intermittantly failing. That sensor sends the speed signal to the pcm and the abs controler witch will also turn off the cruise control.

    Feb 17, 2009 | 2001 Dodge Ram 1500 Truck 2WD

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