There is some information that points to a cold temperature issue and the computer program. The thread below describes a TSB on this issue. My computer was reflashed and I haven't had the projblem since - crossing my fingers!
Your guess is as good as mine. The first time mine went out, they were out for a whole day. They wouldn't come on when I restarted even though we stopped five or six times. The next morning, they started working fine. The second time they quit, I drove straight to the dealer w/o stopping - so they could see the problem in person. Both times the temp was right around 30F. After the reflash, I haven't had any problems at 30F or below.
A forum community dedicated to Chevrolet and GMC diesel truck owners and enthusiasts. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more!