Why is my GMC Yukon XL heater not working?
While there are a variety of reasons your GMC Yukon XL 1500 heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. See what others are asking about their GMC Yukon XL 1500.
What does the thermostat on a GMC Yukon do?
Never touch the radiator cap unless the vehicle is ICE COLD. The job of your Yukon’s thermostat is to regulate the temperature of the engine. It does this by allowing water to enter the engine when it is getting hot, and by keeping coolant from entering while the vehicle warms up.
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.
Why is my Chevy Suburban heater not working?
Is there isn’t enough line pressure, due to low coolant, then the heater core will not be able to get any coolant itself. You can verify this by checking the coolant level by taking a peek at the overflow reservoir. The overflow reservoir will be connected to the radiator by a tube coming from the top (usually right by the radiator cap).
While there are a variety of reasons your GMC Yukon XL 1500 heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. See what others are asking about their GMC Yukon XL 1500.
Never touch the radiator cap unless the vehicle is ICE COLD. The job of your Yukon’s thermostat is to regulate the temperature of the engine. It does this by allowing water to enter the engine when it is getting hot, and by keeping coolant from entering while the vehicle warms up.
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.
Is there isn’t enough line pressure, due to low coolant, then the heater core will not be able to get any coolant itself. You can verify this by checking the coolant level by taking a peek at the overflow reservoir. The overflow reservoir will be connected to the radiator by a tube coming from the top (usually right by the radiator cap).
How do you heat the back of a GMC Yukon?
Press the button to cycle through the temperature settings of high, medium, and low. The indicator light will glow to indicate the level of heat selected. To heat only the seatback, press the vertical button with the heated seatback symbol. An indicator light on the button will glow to designate that only the seatback is being heated.
Is the GMC Yukon XL a registered trademark?
GENERAL MOTORS, GM, the GM Emblem, GMC, the GMC Truck Emblem and the name YUKON/YUKON XL are registered trademarks of General Motors Corporation. This manual includes the latest information at the time it was printed. We reserve the right to make changes after that time without further notice.