Question about 2003 GMC Envoy

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Where is the D-Side blend door actuator for an 2003 envoy

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  • shrommy07
    shrommy07 Feb 14, 2012

    any idea of where its located??



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SOURCE: 2003 gmc envoy XL where is the blend doors

Here is a diagram of the front HVAC system.


Posted on Aug 29, 2011


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1 Answer

Went to replace passenger side blend door actuator, (2002 GMC Envoy) but actuator is ok, shaft that goes to door only turns about 1/8 turn- needs to turn 1/4 turn. what can I do?

Try system reboot. Disconnect engine battery for two minutes, reconnect and turn the ignition key to the 'on' position and wait two minutes for the system to recalibrate actuators.

Jan 09, 2014 | 2002 GMC Envoy

3 Answers

I have a 2003 Envoy and when I put the heat on - the heat only blows from the 2 left vents. The 2 right vents blow cold air, as well as the right floor vent. This is a problem when it is cold outside,...

There is something called a blend door which allows a certain amount of hot and cold to mix to match your temperature setting. This blend door is either stuck in place on the passenger's side or it has an actuator that is faulty. An actuator is basically a switch that controls it kind of like your thermostat does on your hvac at home

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1 Answer

Replaced battery on 2004 envoy, hvac stays cold on drivers side and hot on passenger side. Took battery terminals back off and waited 10 min.s and replaced did not help.

First set all HVAC controls to off or fully CCW positions, then disconnect battery for 10 minutes. Reconnect battery and don't touch any HVAC controls for a few minutes. If this does not work you may have a bad actuator or blend door.

Oct 10, 2010 | 2003 GMC Envoy

2 Answers

Heater blows cold air

If the Temp. Selector Control is set to Heat and blows cold air, your Blend Door Actuator may be stuck or it is inoperative. The actuator is not fixable, if it fails, it must be replaced. Follow the instructions to remove and replace it.
  1. Disconnect battery negative cable from battery and properly isolate to prevent accidental reconnection.
  2. Remove the instrument panel.
  3. Disconnect the electrical connector from the blend door motor/actuator.
  4. Remove the four screws holding the blend door actuator to the plenum.
  5. Remove the temperature blend door actuator.


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Oct 07, 2010 | 2003 Mercury Grand Marquis

1 Answer

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blend door actuator needs to be replaced. dual climate controls have one for each side.

Jul 18, 2010 | 2002 GMC Envoy XL

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2004 chevy avalanche with dual control system problem

this problem is caused in almost all cases by a failed actuator that moves the door insiode the heating/ac duct to change the outlet temperature, it is called the Air Temperature Control Blend Door actuator.

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1 Answer

Cant find the blend door actuator on 2003 ford f150 super crew

The temperature blend door actuator is located on the right side of the transmission hump under the evap. case. The floor ducts cover it.

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