Won't crank
 

I just got my cummins and I don't know if it is normal that it won't let you start it with the parking break on or pushing the break but mine doesn't. Anyways I was at the fueling station and I went to start it up to pull off and the break light wouldn't shut off even though nether where on. I know this because I pushed it off to the side. I know the starter is fine because we had to jump start it and it started fine and ran great.
Any ideas what the problem is?

that is strange ... :humm:

Does it have an aftermarket alarm? Some people install them with all kinds of crazy secondary triggers that have to be followed to start. I had an old Camarones that you had to hold the wiper switch when turning the ignition or it would not start. This was to deactivate the alarm system.