Question about 2002 Chevrolet S-10

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A/C works fine but heater will not blow hot. Blower motor works

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  • 24 Answers

You need to check your heater control valve that operates the cold air door. Sounds like the door is stuck in the cold air position.

Posted on Oct 07, 2009

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Posted on Jan 02, 2017

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SOURCE: '98 S-10 heater blowing cold air - not hot air

will the air flow switch from floor to the mid to defrost? if so then we have a problem with the tempature door actuator. easy to replace just in tight place. Keep me posted for more help or if this was any help thanks

Posted on Jan 31, 2009

  • 31 Answers

SOURCE: the heater is blowing warm (not hot) air

This could be your thermostat. If the thermastat is stuck open the coolant will not build up enough heat. When the coolant reaches your heater core it has not been superheated by the engine because your radiator and fan are contiuously cooling it. I would change the thermostat. That would be a good place to start. I hope this has been helpful.

Posted on Mar 17, 2009

  • 1 Answer

SOURCE: 2000 Chrysler Town & Country , no heat, blower fan working fine

Probably one of two things. First make sure that your coolant level is full. If the coolant is not flowing properly you won't get heat. If you begin to get heat while driving, but only when you are excelerating, this is your problem. If that is not it you may need to change the thermostat. This is noot hard as long as it is easy to get to and it should be easy.

Posted on Apr 08, 2009

  • 2 Answers

SOURCE: heater blower motor only works on high

You most likely need to replace the ignition switch. Sounds weird, but check out other posts. It works.

Posted on Aug 27, 2009

  • 9 Answers

SOURCE: 1997 Jeep Cherokee - Blower motor stopped working.

Check the relevant fuses with a test-light or VOM, don't just "eyeball" them as they often break at the very end. Then check the heater/A/C relays on the electrical panel. The heat/cool is controlled by a stepper motor which opens and closes the air "mixing box", but it won't work with a bad relay. If all of those check-out, you need a OBDII code reader to check the "engine" computer, as it controls the electrical modules. Also check the fusable links going to the electrical panel, and the cable from the battery to the panel. The cable may be corroded in-two and you'll never see it, so no juice to the panel, no juice to the heat/AC system. (I had a Dakota do that.) PS: Double check the grounds that they aren't corroded. Learned about that from a BSA Gold Star production racer.....

Posted on Mar 27, 2010

Testimonial: "Many thanks, Walker. Tt was the fuse in the kick panel. Looked ok, but NO continuity. I used the 10A spare and everything worked. Thanks!"

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My heater recently stopped blowing out hot air, stills blows air.


If your blower still blows air just not hot then you are more then likely low on coolant.

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best of luck and if there are any more details you can give please do the title gets cutoff and I hope this is what you are asking

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