Question about 2002 GMC Yukon XL

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2004 GMC Yukon XL Reduced Eng power

Has anyone had problems with Reduced Eng. Power/Stability control disabled/svc 4 whl drive? Had continual problems with these msgs. Today was first time that vehicle would not go over 20 mph when these lights came on. Dlr. changed battery, another shop was unsure. Afraid to go anywhere now as it is happening more and more. 44,000 miles, of course, just out of warranty when this began. Any help would be great.

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  • ja43721 Jul 22, 2008

    I have same problem...reduced power sensor comes on and shuts car down to less than 40mph...have been to the dealership 3x trying to figure out what the issue is...has anyone fixed and been satisfied?

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It sounds like it could be your pcm power control module. only because there are so many different lights coming on at once. or and this may sound stupid but check under the drivers seat. there is a ontrol box there. push the connector and make sure its connected... Believe it or not.. when the seat moves it can tug on the cable. It did on mine and I lost the fuel pump and the fuel guage. I also lost traction control. I had the pump replaced and of course it worked when i drove it out of the dealer only to stop 2 days later... By chance i came accross a web page.. I cant find it now. and a guy had the same problem and it took 4 weeks for the dealer to find out it was under the seat. I check mine frequently and have not had a problem since... lucky for me the fuel pump was under warrenty.

Posted on May 18, 2008

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File lawsuit against gm too many people having this problem. had escalade and now a yukon same problem

Posted on Mar 30, 2012

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Posted on Jan 02, 2017

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