Question about 1997 GMC Sierra

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1997 GMC sierra 1500 5.7 liter. The antilock brakes have been activating a lot, especially when turning. I have had the wheel bearings replaced which contain the antilock sensors but the antilocks are still activating and making a buzzing sound

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  • 41 Answers

Clean the mounting surface of the abs sensors.rust builds up under the sensor and it sits too far away from the tone ring causing false abs modulation.

Posted on Nov 18, 2010

  • cgvillalon_8 Feb 28, 2011

    donde localizo dicho sensor???

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check the wheel bearings for condition and adjustment as wheels do not rumble if they are good

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1992 GMC sierra two wheel drive 4.3l V6 Have a vibration or rubbing noise when I turn the steering wheel sharply to the left at parking lot speeds.


If you let go of steering wheel and step on brakes does the wheel vibrate?

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1997 gmc 1500 4x4 soft brakes


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Mar 20, 2010 | 1997 GMC Sierra

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I have a 2000 GMC Yukon XL 1500. The antilock braked engage when slow to about 5 to 8 mph.


Here is a copy of a GM bulletin that applies to you concerns of low speed ABS activation.

Antilock Brake (ABS) Activation At Low Speeds (Clean Wheel Speed Sensor Mounting Surface) #03-05-25-007 - (09/29/2003)
Antilock Brake (ABS) Activation At Low Speeds (Clean Wheel Speed Sensor Mounting Surface)

1999-2004 GMC Yukon XL

Condition:
Some customers may comment on ABS activation at low speeds, usually below 8 km/h (5 mph). Upon investigation, the technician will find no DTCs set.

Cause
The cause of this condition may be an increased air gap between the wheel speed sensor and the hub reluctor ring due to rust and debris built up on the sensor mounting surface.

Correction
Measure AC voltage and clean the wheel speed sensor mounting surfaces.

Raise and support the vehicle.
Disconnect both the front wheel speed sensor (WSS) connectors at the frame and harness.
Place a Digital Volt Meter (DVM) across the terminals of each WSS connector.
Rotate the wheel clockwise approximately one revolution per second. The minimum reading should be at least 350 ACmV's. If the reading is less than 350 ACmV's, remove the wheel speed sensor. Refer to the applicable Wheel Speed Sensor Replacement procedure in the ABS sub-section of the Service Manual. Plug the WSS bore in order to prevent debris from falling into the hub during service.
Clean the WSS mounting surface on the hub to remove any rust or corrosion using a wire brush, or equivalent.

Important
Make sure that the sensor sits flat on the hub. Check the sensor flange against a straight edge to ensure flatness. If the sensor flange is distorted, replace the sensor.

Apply a thin layer of bearing grease to the hub surface and sensor O-ring prior to sensor installation. Use ONLY Wheel Bearing Lubricant, P/N 01051344.
Install either the original sensor or a new one in the hub. Ensure that the sensor is seated flush against the hub. Refer to the applicable Wheel Speed Sensor Replacement procedure in the ABS sub-section of the Service Manual.
Place the DVM across the sensor terminals and recheck the voltage while rotating the wheel. The voltage should now read at least 350 ACmV's.

Good luck and thank you for using Fixya.

Mar 09, 2010 | 2000 GMC Yukon XL

3 Answers

Abs comes on when turning at slow speeds when parking 2003 sierra


most likely you have a wheel sensor going out. The only way to tell which one is with a data scanner that can access the ABS system.

It will see all the tires spinning at the same speed until one shows a different speed.

Also make sure you have all the same tires and the air pressures are the same.

Mar 08, 2010 | 2003 GMC Sierra 1500

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From pads may be low causing the rear brakes to over brake and the anti-lock kicks in. Could be a sticking caliper piston and last the proportioning valve may need bleeding as it is offset.....

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Aug 31, 2009 | 1997 GMC Sierra

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There's speed sensors at each wheel. You may have got some contamination in front of one of them... sounds like the abs is trying to compensate for un equal speed at each wheel... and something may be blocking a proper read at one of the wheels...

Jul 23, 2009 | 2002 GMC Sierra 1500

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