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GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 29395
Experience:  GM Grand Master Technician 2007. 14 years experience.
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2005 Chevy: 2500 duramax..4x4 and my service 4wd light came

Resolved Question:

I have a 2005 Chevy 2500 duramax 4x4 and my service 4wd light came on the last time I had it in 4wd. What all should I do to service it?
Submitted: 7 years ago.
Category: Chevy
Expert:  GM Tech (Cam) replied 7 years ago.
Welcome Chad. The first thing you need to do is have your transfer case module scanned. You will need to do this with a scan tool as the code readers don't read the transfer case. From there you can get the code and post it. I will gladly assist you with the diagnosis once we know which direction we need to go. The only thing I can suggest to try is check and clean the grounds at the frame. HERE is a picture. This is under the drivers door.
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