GMC Yukon XL 2000–2006
Common on this vehicle:Warning lightCorrosion or rustMisfire or rough idleNoiseLoss of engine power, no accelerationStalls or shuts off
Possible causes
The documents say what to doOnly records name itThe size of a node, the width of a link and the numbers are records matching this search, not likelihoods.
FaultCrate・GMC Yukon XL 2000–2006・ABS light, 2000
Candidate cause (the documents say what to do)
Unwanted ABS activation at low speed (front wheel speed sensor mounting corrosion)
These vehicles may have a condition permitting corrosion to occur between the front hub/bearing assembly and the wheel speed sensor.
With the brakes applied between about 6 km/h (3.7 mph) and 16 km/h (10 mph), the corrosion may cause unwanted ABS activation.
What to do
- The reading should be at least 350 mV AC; if it is less, the wheel speed sensor must be replaced.
- If the sensor's mounting surface is warped or bent, the sensor must be replaced.
- Dealers remove the sensor, clean its mounting surface on the bearing, apply rust inhibitor and grease, reinstall it and check peak-to-peak output voltage.
- The passage heading states that the repair is cleaning the wheel speed sensor mounting surface.
- The recall procedure is to remove the sensor, clean the mounting surface, apply a rust inhibitor (Zinc-X) to the surface and reinstall the sensor; the sensor is replaced if necessary.
- GM's earlier recall procedure in Canada also included greasing the mounting surfaces and verifying that the wheel speed signal output voltages were within specification.
Caution: Do not pry the sensor out of the bore; prying breaks the sensor body off in the bore.
What is needed
- Parts and materials
- Wheel speed sensor (when the reading is less than 350 mV AC)
- Wheel speed sensor (when its mounting surface is warped or bent)
- Rust inhibitor (Zinc-X, applied to the mounting surface)
- Grease (applied to the mounting surface)
- Labor time
- Not stated
- Special tools
- Not stated
- Scan tool
- Not stated
Only what the technical documents state. "Not stated" does not mean not needed.
In the records
- Wheel Speed Sensor: cleaned 1
Outside the documents and the records
The three pages read are questions and answers about the Chevrolet Tahoe (2002 and 2004) and Silverado (2001), not records of the Yukon or Yukon XL. All are Q&A threads, and none reports that cleaning went on to cure the fault.
- In two of the three pages read (a 2001 Silverado 2WD and a 2004 Tahoe 4WD), ABS activation just before a stop or at low speed was happening on a vehicle whose front hubs with built-in sensors, or left front sensor, had already been renewed. On the Silverado the brake and ABS lamps also lit at times, and on the Tahoe the lamp came on or stayed off depending on how many spacers were fitted under the sensor. Car Talk Community2CarPros
- In a 2CarPros question about a 2004 Tahoe (4WD), the mechanics answering advise pulling both front sensors and cleaning their mounts, because both sides can be at fault even when the scan tool names only one. 2CarPros
- In the 2CarPros question about a 2004 Tahoe (4WD), one answerer explains how he settles the shim count: he gauges the depth from the sensor opening to the tone ring with a snug-fitting wooden rod, sets that against the length of the sensor, and adds or removes shims accordingly. 2CarPros
- In a Car Talk Community question about a 2002 Tahoe, the owner writes that the dealer could not reproduce the fault in a few miles of driving and, after checking the ABS, told her there was no trace of it having activated. Car Talk Community
- A Car Talk Community thread about a 2001 Silverado says the sensor can break on removal and gives $90 for a sensor and $115 plus shipping, bought online, for a bearing and hub with built-in sensor. A post on 2CarPros says the repair for rust under the sensors on a 2002 Silverado 2500 cost $228.00. Car Talk Community2CarPros
The sentences above were written by FaultCrate from what shops' public pages and Q&A sites state as fact (none of the pages' wording is shown; a second reader checked each against its pages). A record of another vehicle says which vehicle. A Q&A thread is a question and advice, and may not say how the repair ended. The links below are places to look; the contents of pages not read were not checked.
The pages read, and other places to look (9)
Repair videos
- SOLVED Low speed ABS activation Chevy TrucksYouTube, no vehicle stated, not read
- Chevy / GM Low Speed ABS Activation Diagnosis & RepairYouTube, no vehicle stated, not read
- Brake pedal buzz at stops - ABS kicks on at stops - Cleaning Wheel Speed Sensors - GM TruckYouTube, no vehicle stated, not read
- Troubleshooting GM ABS slow speed cut in issue_Part 2 of 2YouTube, no vehicle stated, not read
Forums and Q&A
- 2001 Silverado - ABS kicking in just before completely stoppedCar Talk Community, 2001 Chevy Silverado 2WD, 2013
- Chevy Tahoe and ABS activatingCar Talk Community, 2002 Chevy Tahoe, 2010
- 2004 Chevrolet Tahoe Abs Kicks On2CarPros, 2004 Chevrolet Tahoe 4WD（後の投稿に 2002 Silverado 2500、99 Tahoe）, 2018
- Low speed ABS activation?tahoeyukonforum.com, no vehicle stated, not read
- How To: Service/Replace ABS Wheel Speed Sensortahoeyukonforum.com, no vehicle stated, not read
See the evidence (2 technical documents, 2 records)
Passages of the technical documents
The recall covers 1999-2002 Chevrolet Silverado, 2000-2002 Chevrolet Tahoe and Suburban, 2002 Chevrolet Avalanche, 1999-2002 GMC Sierra, and 2000-2002 GMC Yukon and Yukon XL located in the listed severe-corrosion areas.
MODELS: 1999-2002 CHEVROLET SILVERADO 2000-2002 CHEVROLET TAHOE, SUBURBAN 2002 CHEVROLET AVALANCHE 1999-2002 GMC SIERRA 2000-2002 GMC YUKON, YUKON XL LOCATED IN THE SEVERE CORROSION AREAS LISTED BELOW
General Motors (recall bulletin filed with NHTSA under 05V-379) 2008-03-01
The condition is more likely in environmentally corrosive areas.
THIS CONDITION IS MORE LIKELY TO OCCUR IN ENVIRONMENTALLY CORROSIVE AREAS.
NHTSA (recall summary text as published by NHTSA)
The recall was launched only in the listed salt-belt states and the District of Columbia.
THIS RECALL WILL BE LAUNCHED IN THE "SALT BELT" STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MARYLAND, MASSACHUSETTS, MAINE, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN AND THE DISTRICT OF COLUMBIA ONLY.
NHTSA (recall summary text as published by NHTSA)
These vehicles may have a condition permitting corrosion to occur between the front hub/bearing assembly and the wheel speed sensor.
These vehicles may have a condition permitting corrosion to occur between the front hub/bearing assembly and the wheel speed sensor.
General Motors (recall bulletin filed with NHTSA under 05V-379) 2008-03-01
Manufacturer’s documents
Records
- ABS activation at low speeds in Canadian Atlantic provinces Recall 2004-11-05
A cause or a result a complaint states is the owner’s view or what a dealer told them, not an established fact.
Put together by FaultCrate from public records and technical documents. The cause and the repair are for the workshop to decide with the vehicle in front of it. Counts are records, not failure rates.