Question about 2003 GMC Yukon XL

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Service 4WD error displays on 2004 Yukon XL with 37,000 miles.

Error goes off the next time I start. This has happened one other time 2000 miles ago. Scan with CARMD shows no errors.

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Most common problem is a code for the encoder motor position sensor.
You will not be able to pull a code unless you can communicate with the Transfer case control module, the codes ARE NOT stored in the PCM.
Sensor is about 80 bucks and takes about 2 hours to install (on your back) about 30 min, if you have a lift.

Just a side not, if the light came on. There is a code somewhere

Posted on Aug 07, 2009


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