Question about 2002 Chevrolet TrailBlazer

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Heater and air

I had not driven my 02 trailblazer in several months . now when its running if i turn heat or air on motor dies . unless i give it gas . when i first started it up after sitting there was a burnt plastic smell but no smoke . smell went away . it runs good unless ht/ac is turned on

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Hi check your drive belts and make sure that none of your idler or tenshioner pullies have not frozen up.and chack to make sure that your ac compresor is not frozen.

Posted on Jan 31, 2009

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No heat in 02 trailblazer i replaced a lot


do you have a water temperature gauge in the car-what is it reading-you may also have trapped air in the system-run it-make sure its up to operating temp then let it cool down,about an hour and check the coolant level-it may take a few cycles of warming up and cooling down to get the air out-while you're doing this make sure the overflow bottle has plenty of fluid in it to be sucked in while system cools down-cheers Denny

Nov 05, 2013 | Chevrolet TrailBlazer Cars & Trucks

2 Answers

Why did my 02 trailblazer stop blowing ac through all the vents when, switched to heat it still doesn't blow air through the vents? I have no air flow what's wrong?? :(


First check all the fuses. There should be one for Blower or Heater. If all fuses are good, It is likely a bad blower motor or a switch to turn on the blower motor. Try all fan speeds in non auto mode and see if you get any activity. If you get activity on some fan speeds then it is the switch or sometimes called the blower motor resistor. If no activity, its time for a new blower motor. They are under the dash usually on the passenger side, shouldnt be too hard to pull out.

Aug 11, 2013 | 2006 Chevrolet Trailblazer

1 Answer

My heat in my 2006 trailblazer wont get hot


Air Temperature Control Blend Door Failure No Heat or no AC (dependes on where door sticks)

In all modern cars there is a tiny DC electric motor driven gear drive that moves a plastic door that blends heated and cooled air from the AC and the heater core, this is called (interestedly enough) the air temperature control blend door actuator. The motor that moves this door fails because the door starts sticking from warping, most common complaint is no heat but it can be no AC as well. To replace these parts (blend door and blend door actuator) you must remove the entire dash from the car. Always have this problem confirmed by a dealer or qualified repair shop as it is a very expensive repair.

Other causes of no heat in the cabin are engine thermostats that are stuck open (engine runs cold) or air bubbles in the cooling system.

Dec 27, 2012 | Cars & Trucks

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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Engine Overheats and heater blowing cold?

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

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Heat blows cold on drivers side and hot on passenger side?

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

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No heat on car? http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.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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Heater blows cold?

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

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Heater/AC blower motor not working?

http://technoanswers.blogspot.in/2012/02/heaterac-blower-motor-not-working-on.html

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A/C, heater, defroster fan, not working? http://technoanswers.blogspot.in/2012/02/ac-heater-defroster-fan-not-working.html Heater problem?

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

2 Answers

When I tried turn on air cond. or heater the motor try die on me what is that? it's on my 2004 trailblazer


Bad compressor this work also when heater is on. To check have someone turn on ac/heater make sure clutch on air comp is turning. If not comp clutch is frozen

Jun 05, 2011 | 2004 Chevrolet TrailBlazer

2 Answers

SEEMS LIKE CAR IS SLUGGISH AND LOOSING POWER WHEN TEMP IS HOT.


id maybe try going back to 87 octane gas cause 93 may make it run better but it will run hotter too and that can cause premature detonation and spark knock

Jun 28, 2009 | 2002 Chevrolet TrailBlazer

1 Answer

Heater does not blow hot air on full heat setting


the problem is caused by the motor that operates the air temp blend door motor in the heating ducts, it blends air between AC and heater core tro give desired outlet temp.

Dec 12, 2008 | 2000 Chevrolet Silverado 1500

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