Question about 2002 Chevrolet Blazer

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How do I troubleshoot why my heat is not working its blowing with no HEAT

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The first thing I woujld check is the water level in the radiator. Most vehicles are designed such that if the water goes low the heater does not get enough water to heat the vehicle. If that is ok it may be the heater core or baffels.

Posted on Nov 28, 2014

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1 Answer

Heater doesnt work


To troubleshoot this types of problem,click the link below :---
Car heater blowing warm, but not hot air?http://schematicsdiagram.blogspot.com/2011/12/car-heater-blowing-warm-but-not-hot-air.html

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http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

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Heater blows intermittently and temp gauge goes erratic?

http://technoanswers.blogspot.com/2012/01/heater-blows-intermittently-and-temp.html

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http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

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http://technoanswers.blogspot.in/2012/02/heater-problem-on-isuzu-trooper.html

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This will help.Thanks.

Mar 27, 2012 | 1994 Volvo 960

1 Answer

Heater will not work, just cold air Ed


check the coolant level, if your blow motor works and your not getting heat the coolant is probably empty, the heat work when the engine gets hot and coolant starts to get hot, from there the blower, blows the excess heat into your car, low or no coolant means no heat

Dec 24, 2010 | 2000 Ford Taurus

1 Answer

Blower on heat/a not working


So it works with a/c but doesn/t work with heat. Is that what your saying?
Or it blows cold air on heat selection?

If it blows but only blows cold air on heat selection
check out the following items:
temperature selector switch
blend door actuator and motor.



Here are a list of items to check out or have a shop inspect if it doesn't blow anything at all.
a) on/off switch
b) relay
c wiring
d) resistors
e) blower motor

May 11, 2010 | 2004 Chevrolet Colorado

1 Answer

My heat won't get hot on my acura cl 3.2 2003. It will blow but not heat. A/C works fine. What happened?


turn the heat knob all the way to hot (highest) setting and when it starts blowing heat you can turn it down to a comfortable temperature
At least that's how mine works

Feb 14, 2010 | 2003 Acura 3.2CL

1 Answer

NO Heat


It Sounds You Might Have A Bad Heater Core,That Could Be One Reason You Have No Heat.

Oct 25, 2009 | 2004 Ford Explorer

1 Answer

1998 S10 heat wont work sometimes


When you say the heat doesn't work are you meaning the fan doesn't blow out hot air or just doesn't blow out any air? if it blows cold air sometimes when you have the heat on then it could be poor circulation through your radiator or a weak water pump. make sure your radiator is clean on the inside, not too corroded or nasty inside. You can buy a radiator flush thing from wal-mart or any auto parts store. See if it helps.

Mar 01, 2009 | 1998 Chevrolet S-10 Pickup

1 Answer

Heat works on driver side, passenger side blows cold air.


Did you check your coolant level or was it low and you added to it at some point? If so the system my need to be bleed or worst case the thermostat is going bad.

Jan 02, 2009 | 2001 Jeep Grand Cherokee

1 Answer

NO HEAT BLOWS OUT WHEN I TURN MY HEAT ON


Is the car tempature gauge working ? Another words is the car operating at tempature? it could be just that your thermostat is stuck open and probably needs replaced

Dec 05, 2008 | 2004 Chevrolet Monte Carlo

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