Question about 2006 Chevrolet Malibu Maxx

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A/C not pushing cold air and low coolant message "was" displaying

A few weeks ago our low coolant message starting showing. A few days later the A/C stopped pushing cold air. It made some funny noises (like the brakes were catching) and then stopped. The car is also running hotter than it used to. It used to run about the 1/4 line, now it is often above the 1/2 line. I have since filled the coolant with DexCool, however, it took very little and is way over the cold full line. It has not yet went down. The message is gone, but the a/c still does not work. Could they be tied and could a thermostat be bad that is not opening something up to allow coolant to flow? Thanks for any assistance you can offer. Jason

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  • Chevrolet Master
  • 1,289 Answers

Make sure the AC FAN & RAD fan is operating properly. It sounds like u may be dealing w 2 problems. Start w the basics, ck the fans. When u put ac on fan should go on, rad fan works w temp of motor (mid range on gauge should activate)

Posted on Apr 01, 2017

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Posted on Jan 02, 2017

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SOURCE: Dexcool vs Green coolant

Yes, if your car currently has Dexcool in it, you must use the Dexcool to refill it.  However, there currently is lots and lots of trouble with Dexcool. In fact there was a lawsuit over the problems with it.  In fact GM dealers, I hear, are doing complete radiator flushes and replacing all the Dexcool with the old fashion green stuff.  If you would like to change your vehicle over, please ask a certified mechanic for more details specific to your car.  I work for an auto parts store and we constantly are advising people of this Dexcool issue.  
Any further quesitons, please ask!!!  Please rate!!! Thanks!!!

Posted on Feb 17, 2009

  • 31 Answers

SOURCE: Overheating/No Heat 2001 Impala

change the thermostat and the temp gauge in the radiator

Posted on Mar 08, 2009

rtjohnson55
  • 75 Answers

SOURCE: Low coolant light came on 1999 Oldsmobile

If its not low on coolant and the light continues to come on it is the low coolant sensor in the radiator. This sensor is in the plastic side of the radiator and just pops off. These sensors are always a problem and don't always require replacement of the sensor. What happens -especially if you are using red DEX-COOL coolant is that the coolant gets hard and crusty inside the sensor and wont allow the coolant to enter and make contact with the sensor. Simply take the sensor off and blow compressed air or water pressure in it to free it of debris. Easy fix-hope this helps!

Posted on Dec 08, 2009

  • 880 Answers

SOURCE: Heater blows hot air while car is moving but cold

That sounds like the coolant level is low. If it is not the use of "stop leak" has probably caused a partial clog which restricts the flow of water unless the vehicle is turning higher RPMS. While sitting still raise the RPMS to about 2000 and see if the heater blows hot air to see if the above mentioned problems are fact.

Posted on Nov 22, 2010

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