Heater and ac stopped working 1996 gmc sonoma there is a clicking noise when i turn the fan low to high and also the same sound turning switch from off to different blower settings but no air comes out does not even sound like is blowing

the blower motor module is burn.or defect replace it and check for bad terminals at module

Hello,,You may have to go to an after market supplier and pick up a winter front for the little guy,,or put a higher temp thermostat in,,good luck..

hi,

found this for you..

https://www.2carpros.com/questions/gmc-jimmy-1996-gmc-jimmy-heater-blower-motor-not-working

Probably the blend door not actuating. I do not have the manual on where your door actuator is. It's usually right of center under the dash. Look under there and see if you can see anything trying to move when you change the temperature setting. Also, if you hear a clicking noise, that would be the actuator stripping it's gears. If youy can find the actuator, take it off and see if you can manually rotate the door hinge. If yes, replace the actuator. If not, you will have to remove the heater box to find out why the door is jammed. The actuator looks like this:

You need to replace the heater/AC blower motor the motor shaft bearing is defective..

your problem is your blower motor resistor.

Check the magnetic clutch is engaged on front of a/c pump, have the motor running, a/c on and fan on high, if the centre hub is static the pump in not switched on, this can happen when the gas pressure gets low.

your blower motor has gone bad and it over heats and shuts down

Get a female garden hose adapter from the local hardware store. Disconnect the heater hose from behind the fan pulley and attach the hose connection. Disconnect the other heater hose behind the alternator, aim it towards the ground and flush water through the heater core. This worked on my truck.

it sounds like the fan speed switch ...but im no expert