Ram B1500, B2500, B3500, 1999-2003

Removal & Installation

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CAUTION
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.

  1. Disconnect and isolate the battery negative cable.
  2.  
  3. Reach under the instrument panel near the driver side of the floor panel transmission tunnel and unplug the A/C heater control to HVAC housing vacuum harness connector.
  4.  
  5. While still reaching under the instrument panel, disengage the retainer on the A/C heater control half of the vacuum harness from the hole in the center distribution duct.
  6.  
  7. Remove the cluster bezel from the instrument panel.
  8.  
  9. Remove the four screws that secure the A/C heater control to the instrument panel.

    Click image to see an enlarged view

    Fig. View of the heater mirror wire harness connector (1), wire harness connector (2), screw (3) and heater-A/C control (4)

  10.  
  11. Pull the A/C heater control assembly away from the instrument panel far enough to access the connections on the back of the control.
  12.  
  13. Unplug the wire harness connector from the back of the A/C heater control.
  14.  
  15. On vehicles with heated mirrors, unplug the heated mirror wire harness connector from the back of the A/C heater control.
  16.  
  17. Remove the A/C heater control from the instrument panel.
  18.  

To install:

  1. Plug the wire harness connector(s) into the receptacle(s) on the back of the A/C heater control.
  2.  
  3. Route the HVAC vacuum harness through the hole in the reinforcement below the A/C heater control opening of the instrument panel.
  4.  
  5. Position the A/C heater control in the instrument panel and secure it with four screws. Tighten the screws to 20 inch lbs. (2.2 Nm).
  6.  
  7. Reinstall the cluster bezel to the instrument panel.
  8.  
  9. Reach under the instrument panel to reinstall the A/C heater control vacuum harness retainer to the side of the center distribution duct.
  10.  
  11. Plug in the two halves of the A/C heater control to HVAC housing vacuum harness connector.
  12.  
  13. Connect the battery negative cable.
  14.  


CAUTION
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.

  1. Disconnect and isolate the battery negative cable.
  2.  
  3. Remove the center bezel from the instrument panel.
  4.  
  5. Remove the screws that secure the A/C-heater control to the instrument panel.
  6.  

To install:

  1. Position the A/C-heater control onto the instrument panel center bezel and install the retaining screws. Tighten the screws to 20 inch lbs. (2.2 Nm).
  2.  
  3. Install the instrument panel center bezel.
  4.  
  5. Reconnect the battery negative cable.
  6.  


CAUTION
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 accidental airbag deployment and possible personal injury.

  1. Disconnect and isolate the battery negative cable.
  2.  
  3. Remove the engine cover from the passenger compartment, as follows:
    1. Remove screws attaching hold-down brackets to floor pan.
    2.  
    3. Disengage latches from dash extension.
    4.  
    5. Remove engine cover from vehicle
    6.  

  4.  
  5. Reach between the upper dash panel engine housing extension and the bottom of the instrument panel to access and unplug the vacuum harness connector, which is located near the left defroster outlet of the distribution duct.
  6.  
  7. Remove the cluster bezel from the instrument panel, as follows:
    1. Turn the ignition switch to the UNLOCK position, set the parking brake, and place the automatic transmission gear selector lever in the Low position.
    2.  
    3. If the vehicle is so equipped, set the tilt steering column in its lowest position.
    4.  
    5. Using a trim stick or another suitable wide flat-bladed tool, gently pry around the perimeter of the cluster bezel to disengage the snap clips from their receptacles in the instrument panel\
      WARNING
      Be careful when removing the cluster bezel so as not to damage the trip odometer reset button, which extends through the lens near the outboard side of the instrument cluster. If the trip odometer reset button is damaged, the instrument cluster unit must be replaced.

    6.  
    7. Pull the outboard side of the cluster bezel away from the instrument panel far enough to clear the trip odometer reset button.
    8.  
    9. Remove the cluster bezel from the instrument panel.
    10.  

  8.  
  9. Remove the three screws that secure the heater-A/C control to the instrument panel.
  10.  
  11. Pull the heater-A/C control assembly away from the instrument panel far enough to access the connections on the back of the control.
  12.  
  13. Unplug the wire harness connectors from the back of the heater-A/C control.
  14.  
  15. Remove the heater-A/C control from the instrument panel.
  16.  

To install:

  1. Plug in the wire harness connectors to the back of the heater-A/C control.
  2.  
  3. Position the heater-A/C control in the instrument panel and secure it with three screws. Tighten the screws to 20 inch lbs. (22 Nm).
    WARNING
    Be careful when installing the cluster bezel so as not to damage the trip odometer reset button, which extends through the lens near the outboard side of the instrument cluster. If the trip odometer reset button is damaged, the instrument cluster unit must be replaced.

  4.  
  5. Reinstall the cluster bezel to the instrument panel, as follows:
    1. Position the cluster bezel to the instrument panel.
    2.  
    3. Align the snap clips on the cluster bezel with the receptacles in the instrument panel.
    4.  
    5. Using hand pressure, press firmly on the cluster bezel over each of the snap clip locations until each of the snap clips is fully engaged in its receptacle
    6.  

  6.  
  7. Reach between the upper dash panel engine housing extension and the bottom of the instrument panel to access and plug in the two halves of the vacuum harness connector.
  8.  
  9. Reinstall the engine cover in the passenger compartment.
  10.  
  11. Connect the battery negative cable.
  12.  

  1. Disconnect the battery negative cable(s).
  2.  
  3. Reach under the instrument panel on the driver's side near the transmission tunnel and unplug the heater-A/C control to housing vacuum harness connector.
  4.  
  5. Disengage the retainer on the heater-A/C control half of the vacuum harness from the hole in the center of the distribution duct.
  6.  
  7. Remove the cluster bezel from the instrument panel.
  8.  
  9. Remove the screws that secure the control panel to the instrument panel.
  10.  
  11. Pull out the assembly far enough to access the connections at the back of the control.
  12.  
  13. Unplug the wiring.
  14.  
  15. Disconnect the cable, if fitted.
  16.  
  17. If a vacuum unit is fitted, remove the two stamped nuts that secure the vacuum harness connector and unplug the connector.
  18.  
  19. Installation is the reverse of removal.
  20.  



Click image to see an enlarged view

Fig. Heater-A/C control-Ram



Click image to see an enlarged view

Fig. Heater-A/C control-Dakota, Durango

 
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