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Location of blend door and actuator for 1999 grand am

Looking for the location of the blend door and actuator for a 1999 grand am checked the controls they are getting volts and when you switch from hot to cold the volts fluctuate

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  • jadragna1 Mar 09, 2009

    the temperature stays hot constantly so i am trying to eliminate one by one what the problem is the controls are functioning corectly so i want to check the actuator and the blend door but i dont know where they are i pulled the glove box out but i dont what they look like and i hope the dash does not have to come out

  • mike loshbough
    mike loshbough May 11, 2010

    they are supposed to

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5 Suggested Answers

honeymokey
  • 3113 Answers

SOURCE: air blend door

Replace the broken actuator.

Posted on Apr 15, 2009


chiquititas
  • 1010 Answers

SOURCE: AC is blowing out HOT air... How to get to the Blend Door to check it?

No, you just need to fill freon gas.

Posted on Jun 25, 2008

  • 74 Answers

SOURCE: 1997 jeep grand air blend door location

The Jeep Grand Cherokee sucks air from the outside via a hole on the passenger side of the cowl. It's under the black plastic piece that runs under the wipers.

The air is then sucked via the blower and blown into the housing where the heater core and A/C evaporator core live.

The blend door is inside this housing as well.

This also depends on if you have regular climate control or the more advanced ATC digital climate control found on some of the Limiteds.

You could possibly take out your glovebox and see if there are any broken pieces going to the door accuator.

Otherwise if it's internal, you'll need to take out the heater/ A/C housing.

To get to this housing, you have to take apart your entire dash, lift the top dash cover off, and then you'll see the housing. You could possibly check for a few thing there.

Most everything there is vacuum controlled.

You have to drain your antifreeze and have your A/C freon discharged (use a professional to capture the freon).

There are 5-6 nuts holding the housing to the firewall. You have to reach these from the engine compartment.

Disconnect your A/C lines and heater hoses. Pull out housing.

This is definately an advanced project, thus the reason for the high pricing.

Hopefully you can get it fixed without having to take this Jeep apart entirely. Try diagnosing with a vacuum gauge if necessary before tearing it apart.

Posted on Feb 10, 2009

  • 50 Answers

SOURCE: A/C and Heater Blend Door Actuator

location is on ac and heater box under dash.Good luck big jab to fix it.

Posted on Mar 13, 2009

  • 159 Answers

SOURCE: 99 Grand Am heat out of dash at times.

it is the heater control panel. it is all electric. common problem with gm hvac controls

Posted on Jun 04, 2009

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1999 ford expedition , runs good doesn't overheat , but puts out no heat ?


heater core might need replaced . check the hoses going to it under the hood after it gets to operating temperature .One should be hot and the other not so much

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2004 grand am gt I have lukewarm air in the passenger compartment it will not get hot. every thing is normal.


I suspect the blend door or actuator. This is a labor intensive repair or diagnosis, as the blend door is under the dash, passenger side, and lots of things need to be removed just to get to it. This year of Grand Am has an electric actuator that may have died - but the actual controls for it may be in the computer. You could throw a lot of time and money at this problem and still not have it fixed. depending on how much you value this car and the condition of the rest of it, you may just want to buy a 12 volt ceramic heater that will plug into the cigarette or accessory outlet for warmth.
Hope this helps!!

Jan 25, 2014 | Pontiac Grand Am Cars & Trucks

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2006 Grand Prix Heater blows cold air only


The blend door is probably what is keeping the air from blowing across the heater core and picking up the heat. I hope your manual gives a description and procedure for it.

The blend door actuator and other heater case doors will be either vacuum operated with a few canister diaphragms situated around the heater case, or they may be operated with electric motors. If you pull off the lower sound insulator panels below the dash, you can see the bottom of the heater case, and then find the actuator for the blend door. If vacuum operated, check for vacuum. The vacuum for the heater/AC controls comes from a single line from the engine, through the firewall, and into the back of the control head or to a control module. Then, many vacuum lines branch out from this central point to the canisters- the heater/AC controls will direct vacuum to appropriate actuators, or servos.

Nov 12, 2013 | 2006 Pontiac Grand Prix

1 Answer

Ac blows out the defrost side 1999 grand cherokee I-6 engine


these were common for the blend air door breaking around the pivot side. They would break clean off and not allow the switch of cold air to hot air etc. This can easily be dtermined by having a technician scan the HVAC module and a code will be "blend door range too large" then you know for sure either the actuator motor, or the blend door is broken. Either way, its 10 hours labor, minimum, at a shop. Simply because the entire instrument panel (dash) has to be removed from the vehicle and lay across the front seat. Then you can find access to the heater box and remove it. Only then can you replace the necessary doors, and actuators. Its very labor intesive. Good luck with the repairs.

May 21, 2010 | 1999 Jeep Grand Cherokee

1 Answer

My air conditioner is working but won't blow out


Are you saying the temp blend door is not working?
If yes, it's the control head or the temp blend door motor on th plenum case under the dash. Buy used on ebay.

DO you have manaul or electroic controls?

If electronic

A/C Electronic Blend Door Actuator The A/C electronic blend door actuator is located on top of the A/C evaporator core housing (19A553) assembly.
  • Its function is to move the A/C air temperature control door on command from the control assembly.
  • The A/C electronic blend door actuator contains a reversible electric motor and a potentiometer. The potentiometer wiper is connected to the actuator output shaft and moves with the output shaft to indicate the position of the A/C air temperature control door.
  • A five volt signal is applied to the ends of the potentiometer. The voltage available at the wiper indicates the position of the potentiometer. The expressed value of the actuator wiper voltage is sent to the control module and matched with the wiper voltage of the module potentiometer. The printed circuit board then drives the actuator motor in whichever direction is necessary to make the actuator wiper voltage agree with the control module wiper voltage.
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manual

#3 is the blend door.

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May 08, 2010 | 1998 Mercury Grand Marquis

1 Answer

Heat is out on 1999 jeep grand cherokee limited


I had this problem on a 99 grand cherokee limited, It was the heater blend doors and if you have dual climate control one side usually goes out before the other. These blend doors are located behind the glove box unaccessible inside the HVAC shell.
(http://www.wjjeeps.com/hvac_sub_assembly.htm) Motor failures for this HVAC sub assemblies is also something to look for although much less common.
My local dealership estimated $$$$$$$$$950.00 because they have to remove the entire dash so I looked around for something else.
http://cgi.ebay.com/ebaymotors/Blen-Dor-Jeep-Grand-Cherokee-Blend-Door-Heater-Repair_W0QQcmdZViewItemQQhashZitem3eef1e1cd6QQitemZ270299700438QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

I used something similar to this and now have heat that is controlled solely by the knob nearest the driver. It wasn't very difficult just kind of a tight squeeze.
Hope this helps
GOOD LUCK

Jan 09, 2010 | 1999 Jeep Grand Cherokee

1 Answer

1999 Jeep Grand Cherokee Limited,Dual climate control blows cool air on the driver side and hot on the passenger side. Was told by dealership item is located behind the dashboard and the repair cost is...


hi
check-out heatertreater.com, i had the same problem with my cherokee and bought the heater treater blend door repair kit. it really does work and you can fit it yourself in around half an hour. kit comes with all you need and full instructions..
hope this helps

Dec 29, 2009 | 1999 Jeep Grand Cherokee

2 Answers

1999 Silverado - cannot get the temperature to switch from cool air to warm air when turning the knob to heat.


The temp blend door, or blend door actuator may be faulty. You can check this by watching the movement of the blend door actuator while you turn the temp selector knob. If the actuator is working, then it may be the blend door, or blend door lever broken. If these are ok then the control head may be faulty.

Oct 18, 2009 | 1999 Chevrolet Silverado 1500

2 Answers

Heating system only blows out hot air through the vents


I would look at the air blend doors first, it sound like they are not working or your control in the dash is not working send a signal to them. they work by changing the air from hot to cold or in between.

Avalanche, Sierra And Silverado
  1. Remove the floor air outlet duct extension (1) from the floor duct (2). 0900c152801c9c8a.jpgRemove the floor air outlet duct extension (1) from the floor duct (2)
  2. Disconnect the electrical connection at the blend door actuator (10). 0900c152801c9c8b.jpgBlend door actuator and related components
  3. Remove the blend door actuator mounting screws from the HVAC module.
  4. Remove the blend door actuator as an assembly with the actuator cam. 0900c152801c9c8c.jpgRemove the blend door actuator mounting screws from the HVAC module
To install:
  1. Install the blend door actuator as an assembly with the actuator cam.
    1. Line up the heater/defroster valve lever with the blend door actuator cam slot.
    2. Line up the A/C valve lever with the blend door actuator cam
  2. Install the blend door actuator mounting screw to the HVAC module.
    1. Tighten the blend door actuator mounting screw to 14 inch lbs. (1.6 Nm).
  3. Connect the electrical connection at the blend door actuator (10). 0900c152801c9c8b.jpgBlend door actuator and related components
  4. Install the floor air outlet duct extension (1) to the floor air duct (2).
C/K Series
  1. Disconnect the electrical connector to the mode actuator that is located on the left side of the air distribution case.
  2. Remove the screws.
  3. Remove the adjuster links from the control lever.
  4. Remove the mode actuator.
  5. Adjust the mode actuator by completing the following steps:
    1. Connect the electrical connector to the actuator.
    2. Turn the ignition switch to the RUN position. Allow the self-positioning of the actuator.
    3. Turn the ignition switch to the OFF position.
    4. Remove the actuator from the electrical connection. 0900c152801c9c8d.jpgBlend door actuator-C/K Series
To install:
  1. Install the mode actuator.
  2. Install the screws.
  3. Install the adjuster links to the control lever.
  4. Connect the electrical connector.
  5. Test the circuit operation

Nov 27, 2008 | 2001 Chevrolet Silverado

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