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2004 GMC Yukon XL Denali Traction Control

10 messages,  Last post on Jun 26, 2009 at 9:42 AM

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#5 of 10 Re: traction control [matthewdf] by isi May 13, 2009 (10:01 am)
Replying to: matthewdf (May 13, 2009 9:36 am) It seems that the general consensus is that the speed sensors on the front wheels are corroded and that this gives the computer a faulty signal about the actual speed of each wheel, thereby engaging the traction control. The solution is to clean the sensors. I have not yet had time to do this, as it is a lengthy job taking apart the front brakes, etc. For now, when the problem happens, I just reach over and disable the traction control. Sorry to hear about the problem with the MAFS and the A/C. Both those parts are not cheap. Replies to this message: jdlsierra (May 27, 2009 10:57 am) isi (May 27, 2009 11:15 am) jdlsierra (May 27, 2009 11:36 am) and 2 more...
#6 of 10 Re: traction control [isi] by jdlsierra May 27, 2009 (10:57 am)
Replying to: isi (May 13, 2009 10:01 am) I had this same problem and cleaned the front wheel speed sensors. That worked for about 1000 mi then it started again. After two times to the local dealer ( they could not find any problem ) and $ 125.00 later . I decided to take a chance and replace the front sensors ( approx. 2 hours in my garage ) and cost approx. $110.00 ( for the set of 2 )at my local chevy dealer. He needed the vin to locate the correct part and it took a couple of days to get. of course they are made in Taiwon . That completely corrected my "traction control " problems. I have driven approx. 4000 mi with no problems except for the rear wiper that doesn't work. 73,676 mi and gets 17.5 on the highway. Replies to this message: isi (May 27, 2009 11:15 am) jdlsierra (May 27, 2009 11:36 am) isi (May 27, 2009 11:54 am) isi (Jun 26, 2009 9:42 am)
#7 of 10 Re: traction control [jdlsierra] by isi May 27, 2009 (11:15 am)
Replying to: jdlsierra (May 27, 2009 10:57 am) Thanks for the advice. When you removed the sensors, did you first remove the hub and the half shaft, or do the sensors come out without having to take apart the hub? Replies to this message: jdlsierra (May 27, 2009 11:36 am) isi (May 27, 2009 11:54 am) isi (Jun 26, 2009 9:42 am)
#8 of 10 Re: traction control [isi] by jdlsierra May 27, 2009 (11:36 am)
Replying to: isi (May 27, 2009 11:15 am) you can remove the sensors by first removing your front brake caliper and then removing your rotor, the sensor is attached to the hub with a single allen bolt. I installed the new ones with " loctite " to be sure they stayed in place. This is the setup on my 2004 yukon denali.          I got to cut grass now so i will check back in 1 to 2 hours. Replies to this message: isi (May 27, 2009 11:54 am) isi (Jun 26, 2009 9:42 am)
#9 of 10 Re: traction control [jdlsierra] by isi May 27, 2009 (11:54 am)
Replying to: jdlsierra (May 27, 2009 11:36 am) Thanks again for the advice. I will tackle the job in a few days. Right now my son is occupying our hoist.
#10 of 10 Re: traction control [jdlsierra] by isi Jun 26, 2009 (9:42 am)
Replying to: jdlsierra (May 27, 2009 11:36 am) Replaced the front left sensor. Reused the front right as it looked really good. Still have the problem with traction control active. Will try replacing the front right sensor.

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