Why is my GMC Savana 2500 heater not working?
Learn if it’s a simple fix or time to seek out a trusted technician. Not your vehicle? Why Isn’t My Heater Working? What are common reasons my GMC Savana 2500 has heater problems?
Is there a problem with the GM blower motor?
If you have a General Motors car or truck from 2002 through 2008 you’ll probably have a blower motor issue at some point. In many cases it’s a problem with the GM blower motor module. The most common complaint when this part fails is the motor will not turn on at all.
Can a blower motor be replaced in an AC evaporator?
The blower motor module is close to being the lowest point and will wind up sitting in a bath of water. If you replace this part go the extra step and make sure that the condensation drain is clear on your AC evaporator. Also make sure your old blower motor spins freely and isn’t starting to bind.
What happens when the blower fails on a Chevy Equinox?
When the blower motor fails, the air conditioner and heater may still work, and heat or cool may be felt at the vents, but the air pressure will be dramatically decreased. This Read More When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold.
Learn if it’s a simple fix or time to seek out a trusted technician. Not your vehicle? Why Isn’t My Heater Working? What are common reasons my GMC Savana 2500 has heater problems?
What causes a blower motor to stop working?
In a situation where the motor doesn’t work on any speed, the most likely causes are: a blown power supply fuse, a bad motor ground connection, bad motor speed control module or a failed motor. On all systems, a failed blower motor is least likely. Blower motors generally don’t fail out of the clear blue.
What kind of motor does a variable speed blower use?
Variable speed blower motors don’t use a blower motor resistor. Instead they use a blower motor speed control or a power transistor. Variable speed motors are most often used in vehicles with automatic climate control.
How does the HVAC control head work on a blower?
In those applications, the HVAC control head is a digitally controlled unit and uses various sensor inputs to determine when to supply heat. Based on the driver’s input to the blower speed switch, the HVAC control head sends a digital signal to the blower motor speed control module.