× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: GMC W4 won't shut off
Posted to HD/Fleet Forum on 12/30/2004

I do a few electrical tests, check the alternator, check for power and ground to solenoid. Try jumpering it and see it it shuts off. I know we went through one of these several years ago, I don't remember the specifics any more.

good luck

Jim R. Login to read more.