Fan for heater not working

TIMPET

MEMBER
2013 CHEVROLET EXPRESS
V8
2WD
AUTOMATIC
130,000 MILES

I can a feel a semblance of heat but no settings on the fan work. I have a remote start and noticed this morning the truck was not warm when I got in it. I turned the fan switch on and off a coupe of times, but nothing. I went to load the truck and when I came back the fan was on. Now after working all day, and start/stopping the truck for various stops, it stopped after I turned off the truck and turned it on the last time. I looked at the fuse diagram in the owners manual but could not figure out which one it is. The manual does not seem to correspond to the layout I have. I checked the engine compartment and the one located under the seat.

1 Reply

SCGRANTURISMO

MECHANIC
4,897 POSTS

Hello,

This sounds to me like you could have loose connection in the HVAC circuit. I have included a couple of links that you might find helpful below as well as your vehicles HVAC system wiring diagram in the diagrams below. Check out these guides:

https://www.2carpros.com/articles/low-or-no-air-flow-from-vents
https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

Also check out the wiring diagram (below in diagrams) and get back to us with what you find out.

Thanks,
Alex
2CarPros

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