There could be multiple reasons why a heater would stop working in a truck. There could be low coolant or a bad fuse to make a heater stop working in a truck. The best way to find out the reason is to take it to a certified auto mechanic.
Yes it will stop heating up...........
there is a short somewhere in dash or heater, you need to fix that to stop fuses blowing
heater core
Turn it off.
The heater on a Mercedes c200 will stop working if the heater core is blocked. It allows hot coolant from the engine to be used in heating the cabin.
If you have lost a sufficient amount of coolant this will stop the heater working because there will be no hot water in the heater rad.
The heater will stop getting hot when you're low on coolant. If the coolant is low enough the engine will overheat and it will be severely damaged.
you need to replace your heater core.
There are a couple of reasons why a 1999 Oldsmobile Alero ac heater to stop working. The heater coil may need to be replaced or the HVAC blower motor may need to be replaced.
YesYes
Could be low on freon,
Possibly a relation to the blower motor/ heater door accuators.