Skip the auto shop - Our mechanics make house calls

Q: Heater not blowing hot air

asked by on

The heater in my truck is not blowing hot air. I also noticed liquid leaking below the passenger's side dash.

A: If you have fluid leaking from under the da...

If you have fluid leaking from under the dash on the passenger side, the heater core is leaking. This part will require replacement in order to get heat to function properly again. Sometimes this can be replaced by removing only the glovebox. Other times the dash will need to be completely removed to access the heater core. With this taken into consideration, I would recommend that you have this job done by a professional in order to make sure everything gets put back together correctly. Once the heater core has been replaced, I would recommend flushing the cooling system, installing a new radiator cap, and bleeding any air from the system if necessary to ensure proper function of the heater and cooling system.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Heat and air

Hello. If the temperature is not changing at all then most of the time this is caused by an issue with the blend door motor. If this has failed then the temperature door will be stuck in one position. I...

Q: Truck not starting after sitting

Hi there. It sounds like you may have a battery reaching the end of its life cycle. Over time, batteries will lose their ability to hold and keep a charge. Typically between 7 and 10 years depending on the environment...

Q: My 1999 dodge 2500 turns on but it wont accerlerate at all

Hi there. If you're able to press the throttle and the engine's RPM increases, your issue may be related to the transmission or drive system. However, if you press the accelerator and the engine does not increase RPM, then it's...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...