AC cold, but fan stopped. Separate fuse?

[EvergreenZ71]

Was using the AC just fine today, but made a stop and when I got back to the truck and started it up I couldn’t feel anything from the vent. As I started driving I could feel cold air being pushed through “ram jet”-style and the rear AC feels cold.

Does the fan have it’s own fuse or is this looking like the motor just picked now to bite it?

 

[Joseph Garcia]

I suspect that there is a fuse for the blower motor, and it 'should' be identified in your fuse box, either in the engine well or in the cabin on the left side.

Also, a common occurrence is the burn out of the resistor pack, which controls the fan speed. Usually, one speed stops working, but the other speeds still work, but the resistor pack can also fail in a manner in which all fan speeds do not work. The resistor pack is under the dash on the passenger's side, but knowing the specific model/year/trim of the truck may better pinpoint its location.

 

[j91z28d1]

I don't know forsure on these, but usually high speed bypasses the resistor pack.

 

[Fless]

I don't know forsure on these, but usually high speed bypasses the resistor pack.

That's the way it works on the NBSes, IIRC. Two fuses, I think: one for the high fan setting which bypasses the resistors (but I think connects through the resistor module) and another for the lower speeds. YMMV

 

[Doubeleive]

Was using the AC just fine today, but made a stop and when I got back to the truck and started it up I couldn’t feel anything from the vent. As I started driving I could feel cold air being pushed through “ram jet”-style and the rear AC feels cold.

Does the fan have it’s own fuse or is this looking like the motor just picked now to bite it?

Was using the AC just fine today, but made a stop and when I got back to the truck and started it up I couldn’t feel anything from the vent. As I started driving I could feel cold air being pushed through “ram jet”-style and the rear AC feels cold.

Does the fan have it’s own fuse or is this looking like the motor just picked now to bite it?

If the fuse is good then you'll want to pull the blower fan first and test it with 12v, if that is good then move on to the resistor. My experience has been the fans burn out, you will need a 7mm deep socket, the fan twist's out but may have 1 screw as well as a clip/tab that you have to lift up to twist it out. Also note there are 2 different fans depending on the year