Service four wheel drive, code c0379

2004 CHEVROLET SILVERADO
400,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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REED MORRIS
  • MEMBER
  • 1 POST
Service four wheel come on and stays on. Four wheel will not work. I have replaced control switch and front axle shift actuator. Code c0379 comes up. help please!
Apr 10, 2019 at 4:36 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 POSTS
Hello,

There is a ground wire that goes bad on these. to be sure here is a guide and the wiring diagrams so you can test the connections:

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Apr 12, 2019 at 10:51 AM
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