How does a defroster work on a GMC Truck?
Line up the heater/defroster valve lever with the mode actuator cam slot. Line up the A/C valve lever with the mode actuator cam. 2. Install the mode actuator mounting screws to the HVAC module. Tighten the screws to 1.6 N·m (14 lb in). 3. Connect the electrical connection at the mode actuator (10). 4. Install the Body Control Module.
Why is my GMC Sierra HVAC blower not working?
In addition, moisture and other contaminants may enter the fresh air intake plenum and contact the internal circuit of the module or corrode the terminals. If any of these were to occur, the relay resistor module or wiring connector could overheat and the HVAC blower may not function on certain blower settings or may be inoperative.
Why does my blower motor keep running after I shut off the car?
Some customers may comment that the blower motor is inoperative or continues to run after the vehicle has been shut off. These conditions may be caused by a blower motor control module failure. This failure may occur when the vehicle is operated in ambient temperature conditions of -23 C (-10 F) or below.
What to do when air blows out of defroster vents?
Assuming that your actuator has failed in the most common position, blowing out of the defroster vents only, you should not have to do anything other than installing the actuator motor. No indexing of the door shafts to the cam/cog or recalibration of the actuator motors.
Why is my AC blower not working on my 2006 Silverado?
2006 Silverado 2500HD blower speed control replacement. My brother has a 2006 Silverado 2500HD. The AC blower will not shut off. I know this is probably a bad resistor module under the dash so I ordered a new one. His has 3 wires in and two out to the blower motor. I was told there was an update kit and the new replacements have 7 wires in.
Is there recall on GMC Duramax blower motor?
You need to find a different dealer then, it is covered as long as you don’t have over 150K miles on your truck, the recall runs from 2003-to 2007 Classic body trucks. Check somewhere else, somewhere that actually knows whats going on…
Some customers may comment that the blower motor is inoperative or continues to run after the vehicle has been shut off. These conditions may be caused by a blower motor control module failure. This failure may occur when the vehicle is operated in ambient temperature conditions of -23 C (-10 F) or below.
How does a blower work on a Chevy Silverado?
I USED A BATTERY CHARGER AND TOUCHED THE PRONGS TO THE E TERMINAL AND ALL OF THE OTHER TERMINALS. E TERMINAL IS THE GROUND AND A,B,C,D,F ARE THE BLOWER SPEEDS. THE FAN SHOULD KICK ON WHEN YOU HIT ANY OF THOSE TERMINALS WITH THE JUMPER CABLE PART OF THE BATTERY CHARGER.
Line up the heater/defroster valve lever with the mode actuator cam slot. Line up the A/C valve lever with the mode actuator cam. 2. Install the mode actuator mounting screws to the HVAC module. Tighten the screws to 1.6 N·m (14 lb in). 3. Connect the electrical connection at the mode actuator (10). 4. Install the Body Control Module.
What to do if your GM fan won’t defrost?
See if this fixes the problem. Many of GM’s AC control heads have a built in reset feature that when power is removed and then applied it will go through a cycle that activates all the vent doors and mode doors. It’s worth a try.
Why are the vents on my GMC Sierra stuck?
The most common symptom of course is lack of control over the vent output position and normally it will be stuck in the defroster only position. If it is not currently stuck in the defroster position but you are changing the actuator anyways. make sure that you set the vent position to defrost before starting this procedure. You will see why later.
Assuming that your actuator has failed in the most common position, blowing out of the defroster vents only, you should not have to do anything other than installing the actuator motor. No indexing of the door shafts to the cam/cog or recalibration of the actuator motors.