Service four wheel drive, code c0379

2004 CHEVROLET SILVERADO
400,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
Avatar
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 9:36 AM
Advertisement
Avatar
STRAILER
  • ✓Experienced Mechanic
  • 55,562 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.
Images (Click to enlarge)
Attached Media
Attached Media
Apr 12, 2019 at 3:51 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle