No Air

[chevy_kid]

No air coming from my vents when turned on. Ran to the store the other day, a/c blew warm air half way there then was fine on the way back. Got in truck next day and no air what so no matter what setting the fan is on. I can hear the compressor for the a/c kick on but no air. Checked fuses and all seem to be in working order.

[Doug_Scott]

Does "no air" mean there is no air blowing out of the vents? For example, the blower motor is not running.

[chevy_kid]

Yes, blower motor isn't running.

[sahls01gmc]

Either blower motor could be bad, or maybe blower motor resistor.

[Doug_Scott]

Yes, blower motor isn't running.

 

Should be easy fix then, verify the fuses are still good, then locate the blower motor resistor panel and remove it. You should be able to see if it is burnt or not. These resistor panels will burn up over time. You should be able to do a search on youtube for a video showing how to locate and replace it.

[chevy_kid]

I checked the fuses in the cab. Didnt see any under the hood. But whats weird is that service 4wd light came on and my cruise doesnt work?

[Doug_Scott]

I checked the fuses in the cab. Didnt see any under the hood. But whats weird is that service 4wd light came on and my cruise doesnt work?

 

In front of the battery there should be a covered fuse and relay panel. Google has many links to help find the fuse panel. And as previously suggested, youtube is a good source of info regarding the fan resistor block.