Question about 2000 Jeep Grand Cherokee

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Is the blend door linkage reachable from under the pass. side dash? with out takeing out the whole dash?

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No u must remove the dash.

Posted on Jan 07, 2010

Testimonial: "thank you for the info! Is there anything else I should check for or beware of, while I have the dash off?"

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  • Jeep Master
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This actuator is located on the front of the HVAC housing to the right of the floor panel transmission tunnel, and cannot be removed from the passenger compartment without instrument panel and HVAC housing removal.

1. Remove the dash assembly
2. Remove the HVAC assembly
3. Unplug the wire harness connector from the blend door actuator
4. Remove the 2 screws that secure the blend door actuator to the HVAC housing.
5. Remove the blend door actuator from the HVAC housing.

Installation

(1) Install the blend door actuator on the HVAC housing and tighten the two mounting screws to 2.2 N·m (20 in. lbs.).
(2) Plug in the wire harness connector to the blend door actuator.
(3) Install the HVAC unit into the vehicle
(4) Install the instrument panel assembly into the vehicle
(5) Connect and the battery negative cable.

Sorry for the bad news friend, drivers side was the easy side to work on. You can try resetting the Blend door by disconnecting the battery for 2 min, just make sure your radio is off first be fore battery disconnection.

The doors are controlled by a stepper motor. The issue with the system is that the drive motor has a wider range of motion than the movement of the door will allow. At the extents of movement(full heat or full AC), the motor overdrives the plastic blend door into the the internal stop point in the heater box until the motor stalls. This is considerable force on the door and over time, the door cannot withstand the force and will break. Once the door breaks, you lose control over the ability to regulate between heat and AC.

Driver's side is easily accessible through the glove box, but passenger motor is located behind the heater box and is inaccessible without removing the heater box.

Posted on Jan 07, 2010

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Posted on Jan 02, 2017

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Unfortunatly you do have to remove the dash to access any of the blend door or fresh air door actuators
here is a step by step proceedure this takes aprox 5 hrs in a shop so plan on a weekend at home good luck

FLOOR - DEFROST DOOR ACTUATOR

REMOVAL

WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN AN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.

Disconnect and isolate the battery negative cable.
Remove the instrument panel assembly from the vehicle.

zjlimited_318.jpg

Fig. HVAC housing, dual zone shown (single zone similar)-nut (1), passenger blend door actuator (2), nut (3), inlet baffle (4), recirc door actuator (5), recirc air door (6), driver side blend door actuator (7), HVAC housing (8), bolt (9), defroster door actuator (10), mode door actuator (11)

Remove the electrical connector from the actuator.
Remove the mounting screws from the actuator.
Remove the actuator from the HVAC housing.

INSTALLATION
Install the floor-defrost door actuator to the HVAC assembly.
Install the mounting screws and tighten to 2.2 Nm (20 in. lbs.) .
Install the actuator electrical connector.
Install the instrument panel assembly into the vehicle.
Connect the battery negative cable.

I suggest check (or replace if is necessary), the blend door it is a huge project you have to remove the dash board. There is a repair kit available either way it is a 8 hr shop time project.

Hope helps.

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