just got my truck back from getting a new water pump on the drive home it has no heat in the cab low coolant light is on and temp is 3/4 of the way to red line is it just not primed or what? calling the mechanic in the morning and seeing what is up might try putting coolant in it first. sucked driving half an hour in -5 C with no heat! i popped the cap off and coolant shot out witch i thought weird cause theres not coolant that i can see in it! just rather annoying after spending $450 to get a water pump and install :help