Question about 1999 Pontiac Grand Prix

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Air/heat. no air, no heat, no blower

The system was making an awful squeeking sound, at that point the air was still blowing. Then it stopped. I can hear the system kick up from the sound form the engine, but other then that there's nothing.

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Sounds like the heater blower motor has tied up.

Posted on Apr 12, 2009

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Can somebody please tell me where and how to be warm in my 1987 Chevy pace arrow?


WTH is a pace arrow? Aw, never mind, the essence of staying warm is to understand the heating and blowing circuits in the vehicle. It's pretty simple, really. The heater runs off the coolant circulation system in the vehicle. A separate system circulates some of the engine's hot coolant back into the coolant system by passing a portion through the heater case below the dash through a device called a "heater core" and this core is the essence of the heat generating system in the vehicle's interior. When air from the blower motor is passed over this heater core, and then passed into the heater vents, you get warm air in the vehicle.

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Hmm, sounds like your heating unit is gone. They are located behind the dash, usually behind the glove box. The heating unit is not an easy fix. Now If there is NO air at all, the actual blower unit is gone, also, not an easy fix, located also behind the dash, the common problem in the blower unit is the Copper Bushes. They wear down and no longer make contact with the blower motor, causing it to stop. Now for the heater unit, i will basically tell you this, take it to an Auto Electrician either way. I am one by trade, but can not help you over the internet to fix it as requires a lot of pulling your dash apart, i will save you the trouble and just take it to an expert to repair.

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DOES IT BLOW ANY AIR OUT AT ALL? If its blowing air out, check to see if your heater hoses are getting warm. If not, then your heater hoses are clooged, check where they connect to your engine/waterpump for a clog, very common for this connection point to clog up with rust and corrosion. If it don't blow air out, your blower motor switch, blower motor, or blower motor resistor is fauly, check your fuses too.

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Where is the blower motor relay located on a 2010 jeep liberty


on all speeds, is it dead sounding or only no air flow???
wow no symptoms posted only this goose chase deal.

use the scan tool yet? see all DTC errors.
2008 cars can report most cause of lost power etc,
not scanning, invites expensive gue$$ing.!!

HVAC 101: (
gdoes the motor have 12vdc on high? at connector to it>?
on all speed's (now that is a KEY FACT there)

  1. defeat air bag first or die , fiddling these parts.
  2. do the HVAC calibration yet? per FSM.
  3. scan it yet ,if not you will guess wrong. I promise,
  4. i have to stop my online page ,is missing the wiring sections.

calibrate damper:
Use this procedure to ensure that the A/C-heater control is correctly calibrated to the blend door actuator. If the calibration is not correct, the heating-A/C system may experience a condition where full heating or cooling capabilities cannot be obtained.

Many steps can not be done with out a real jeep scan system.
sorry, cant.

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I have a 2000 pontiac grand prix with a digital climate control system. The heat quit working, it doesn't blow out any heat. Now that it is warm outside the air stopped blowing out any air. The digital...


I have a 2000 pontiac grand prix with a digital climate control system. The heat quit working, it doesn't blow out any heat. Now that it is warm outside the air stopped blowing out any air. The digital temperature on the climate control is not correct. When it states that it is below 30 degrees on the ext and it is warm outside the air wont be cold. Once it starts going above 30 degrees the air gets colder. Today the blower stop working all together. Was told it maybe the climate control unit was bad. You can hear the door opening/shutting when you switch the temp from cold to hot. But there was no heat blowing out whatsoever in the winter time. Could you please give me your opinion on whether or not it is the climate control unit or something else?

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When did it start doing this? How soon after does it stop? Does it stop blowing by itself?

1. The vacuum system has a leak and sounds like rushing air. When vacuum reaches atmosphere pressure, the sound will go away.

2. In the 1980's and prior years, Olds keeps the fan running in order to remove moisture in the heat panel. I hated that.... it stops after a few minutes.


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1993 Jeep Cherokee blower/Heater Issue


Your blower motor could be "clogged" but I never saw one with enough debris in there to actually make one stop/ The cure for both is to remove the blower motor from the air box. if you find tons of leaves in there, clean them out. If the shaft on the motor has lots of side play, or will not run when connected hot to battery, replace it.

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