Why does my GMC heater keep getting cold?

Why does my GMC heater keep getting cold?

If the line stays cold, it could mean a defective actuator on the heater box. The actuator controls the heating and cooling operations and a defective one could cause the problem being faced.

What should I do if my GMC climate control does not work?

After starting none of the GMC climate control functions should be used for two minutes. If this does not work the actuators should be removed to see if the temperature door shafts can be turned by hand to provide heat on the driver’s side. If this produces results, the actuators will need replacement.

How to fix Chevy GMC Truck heater blend door?

1999 – 2004? Chevy GMC Truck Heater Blend Door Stuck Easy Fix How-to – YouTube If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. An error occurred while retrieving sharing information.

Why is my HVAC not working on my Chevy Silverado?

Pull and reinsert the fuses for the HVAC before starting the truck. If this didn’t work for you try Step 2. If it seems like one side is stuck at one temperature only, it could mean the blend door actuator is no longer working. The actuator turns a door to switch between warm and cold air, but there are multiple actuators in your truck.

What is the temperature control on a GMC CK truck?

Power is routed back out to Pin 7 through a 3.8 ohm resistor and the Max AC switch, but on a 1500 truck Pin 7 is not used. The Blend (temperature) door control is powered directly from +12V via Pin 5.

Why is the blend door on my Chevy Silverado not working?

If it seems like one side is stuck at one temperature only, it could mean the blend door actuator is no longer working. The actuator turns a door to switch between warm and cold air, but there are multiple actuators in your truck. To figure out which one isn’t working shut off the truck and turn the fans off.

Pull and reinsert the fuses for the HVAC before starting the truck. If this didn’t work for you try Step 2. If it seems like one side is stuck at one temperature only, it could mean the blend door actuator is no longer working. The actuator turns a door to switch between warm and cold air, but there are multiple actuators in your truck.

Where is the HVAC controller on a Chevy Silverado?

Remove the panel under the driver side’s dash board (For passenger actuator remove the panel under the glove box). The actuators are mounted near the HVAC controller. Pry off the electrical harness plugged into the actuator. Unscrew the mounting screws and remove the actuator. Install your new actuator and tighten it down with the mounting screws.