Question about 2001 Chevrolet Silverado 1500

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Ireplaced both wheel speed sensors due to abs

I replaced both wheel speed sensors due to abs engaging during low speed stops which solved the problem, however, now my parking brake and abs warning lights both keep coming on randomly but simultaneously. Why? Also, now my fuel guage, no matter how full my tank is, will just go automatically to Empty triggering my low fuel light to come on. I jar the truck forward or backward by changing gear and then the guage returns to normal. Why? Any suggestions on either problem would be greatly appreciated.

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I had a 2001 silverado 2500 h.d. with the same problems. I took it to a gear head and he found that the emergency brake cable was loose causing it to trigger the warning light on the dash. As far as the low fuel guage I took it back to the gear head and he found that the float in the gas tank was broken causing the low fuel light to come on. The float wasnt a big deal until I lost track of mileage and ran the tank dry.

Posted on Aug 19, 2010

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Have you changed the wheel speed sensors? For the most pard the abs will engage at low speed due to a cracked tone wheel in the hub or cv.shaft

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F-150 4 wheel abs, just as you start to come to a stop the abs engages but does not set a code


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Jun 08, 2011 | 1999 Volkswagen Beetle

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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

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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.

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Abs problem


sounds like you got a bad wheel speed sensor,,,one of them is misreading and causing then sensor to show 0 mph before you are stopped and the other 3 are showing speed so the car thinks its skidding due to the one showing 0 mph, so it activates the abs,,,you may or may not have a abs light on,,,the dealer will have to hook it up to the scanner and see when they drive it which sensor is dropping out,,,common on gm cars

Oct 08, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

ABS is tripping for the past 2 years


Check your ABS sensor on your wheel hub. The ABS sensor may be going bad or needs to be re gaped. You can do the work your self to save you some money, Take the front wheel off and look for your ABS sensor, There is going to be a wire harness along your upper A arms, just follow it to the wheel hub. Give it a good spray with brake parts cleaner and re gap it closer to the speed ring on the wheel hub. If you don't have a feeler gap, you can use a dime as the gap reference. After your have done all that and you still have the problem, you can go to the dealer and have them look up if there was a recall campaign for the ABS activating during low speed stops. Good luck and keep me posted Be glad to help.

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