Question

2008 Chevrolet Silverado 2500 HD 4WD goes dead while driving after about 30 minutes. Changed the crank sensor still doing it. It will start up after a minute or two. The only code is a P0449

Answer 1

I doubt that the P0449 code is related to the stall problem. Unfortunately, there are several things that can cause the problem. Without a code, it makes it harder to diagnose the problem. You have to monitor the vehicle for other symptoms or driving conditions that can help you diagnose the problem.

My only recommendation is to check for loose components, connectors, or hoses in the engine area. Also, if possible, check the fuel pressure.