Skip the auto shop - Our mechanics make house calls

Q: No heat coming out when heater or defroster is turned on

asked by on

Turned defroster on no heat comes out

My car has 152435 miles.
My car has an automatic transmission.

A: Hello there, a variety of faults will cause...

Hello there, a variety of faults will cause your 2011 Chevrolet Silverado 1500 heat to not work with the defroster. If the heat works from other vent settings than it is likely an AC blend door motor is faulty. If the heat does not work at all from any setting, a few common faults are going on such as heater core, low coolant level, coolant leak, thermostat, or a AC control failure. A qualified technician from YourMechanic will be able to diagnose your defrost issues and make any repairs required.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Heating and air problem

Hi. In your owner's manual, you should find a picture and the location of the fuse panel. The manual will also give you the location of the blower motor fuse and relay. First, check to see if the fuse is...

Q: How Does the Front Defroster Work in a Car?

Selecting the front defroster mode directs warm air up through the ducts at the base of the windshield in order to clear moisture in warm weather or frost in colder temperatures. In cold weather, the defroster becomes more effective after...

Q: Steering Problems

Hi there. It's difficult to ascertain what may be stopping your vehicle while turning. Oversized tires on your vehicle may be rubbing, causing the vehicle to a stop. If the vehicle is four-wheel drive, there may be a possibility it...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.