fan/heat

[ShoreMan]

i cant get my truck to warm up at idle no matter how long. i can get heat but the truck has to be moving and there is no difference when i have the setting on 1 or 5. the faster the truck moves the more steady the heat flow. whats the problem with the fan, no fuses are blown or anything.

[precisionpowercleaning]

Sounds to me like it is your blower motor resistor. It is mounted to the airbox just to the right of the blower motor and has 4 or 5 wires plugged into it. Cost around $20. If for some reason that does not fix it, then I would look at the blower motor.