Climate Control Module

Remove and replace the climate control module (heater/AC control head) located in the center dashboard of the 1992 Dodge Viper.

Warnings

Tools required

Parts

• Climate control module × 1 — Use OEM specification
• Panel clips (if damaged during removal) × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and engage parking brake.
2. Turn ignition to OFF position and remove key.
3. Disconnect negative battery cable and isolate from battery terminal to prevent electrical shorts.
4. Allow interior to cool if vehicle has been running; dashboard components may retain heat.
5. Gather all tools and replacement parts before beginning disassembly.

Procedure

1. 1

   Remove center console trim bezel
   Starting at the bottom edge of the center console trim bezel (the panel surrounding the climate controls and radio), carefully insert trim panel removal tools between the bezel and dashboard to release the retaining clips. Work your way around the perimeter, releasing the retaining clips that secure the bezel. Verify the exact clip count against factory documentation, as this is unconfirmed for the 1992 Viper. Once all clips are released, pull the bezel straight back toward the rear of the vehicle to disengage it from the dashboard. Set the bezel aside in a safe location to prevent scratching.
2. 2

   Disconnect radio antenna and wiring (if necessary)
   If a radio is fitted and it blocks access to the climate control module, reach behind the radio unit and, if an antenna lead is present, disconnect it before proceeding. Note that early 1992 Viper RT/10 models were often delivered without a factory radio or antenna. Locate and depress the release tabs on the radio wiring harness connectors, then pull the connectors straight back to disconnect. Note connector orientations for reinstallation.
3. 3

   Remove climate control module mounting fasteners
   Locate the mounting screws securing the climate control module to the dashboard support structure. Remove the screws holding the module in place (typically located at the corners of the module mounting bracket). Verify the exact count and fastener type against factory documentation before removal, as this is unconfirmed for the 1992 Viper. Keep fasteners organized for reinstallation.
4. 4

   Mark and disconnect temperature control cable
   Before disconnecting the temperature control cable, use a marker or piece of tape to mark the cable position relative to its mounting bracket on the module. This will serve as a reference point for adjustment during reinstallation. Release the cable retaining clip by squeezing or prying it free, then slide the cable end off the temperature control lever on the back of the module. Note the cable routing for reinstallation.
5. 5

   Mark and disconnect mode control cable
   Similarly mark the mode control cable position before disconnecting. This cable controls airflow direction (defrost, vent, floor). Release the cable retaining clip and slide the cable end off the mode control lever on the back of the module. Verify the cable moves freely and is not binding or damaged.
6. 6

   Disconnect blower motor switch wiring
   Locate the electrical connector for the blower motor switch on the back of the climate control module. This connector supplies power to the blower motor speed control. Depress the locking tab on the connector and pull straight back to disconnect. If the connector is difficult to access, gently rock it side-to-side while pulling to release.
7. 7

   Disconnect climate control illumination (if equipped)
   If the climate control module has integrated lighting, locate and disconnect the small illumination bulb socket or connector on the back of the module. Twist the bulb socket counterclockwise and pull straight back, or depress the connector locking tab and pull to disconnect. Inspect the bulb for damage and replace if necessary.
8. 8

   Remove climate control module from dashboard
   With all fasteners, cables, and electrical connections removed, carefully pull the climate control module straight back out of the dashboard opening. Use care not to snag any remaining wiring or catch the module on surrounding trim. Inspect the mounting area for debris or damage before installing the new module.
9. 9

   Install new climate control module
   Position the new climate control module in the dashboard opening, ensuring proper alignment with the mounting holes. Slide the module forward into place, taking care not to pinch any wiring behind the unit. Verify the module sits flush with the surrounding dashboard structure before proceeding.
10. 10

    Reconnect electrical connections
    Reconnect the blower motor switch wiring harness by aligning the connector and pushing firmly until the locking tab clicks into place. Reconnect the climate control illumination bulb socket or connector by aligning and twisting clockwise or pushing until the tab locks. Gently tug each connector to verify it is fully seated.
11. 11

    Reconnect temperature and mode control cables
    Attach the temperature control cable to its lever on the back of the new module, aligning it with the reference marks made during removal. Secure the cable with its retaining clip. Repeat for the mode control cable. Manually operate the control knobs on the front of the module to verify smooth cable operation throughout the full range of motion. Adjust cable positions at the mounting brackets if necessary to ensure proper function.
12. 12

    Install climate control module mounting fasteners
    Install the 4 mounting screws through the module mounting bracket into the dashboard support structure. Tighten the screws in a cross pattern to ensure even seating of the module. If torque specification is not provided, tighten screws snugly but avoid over-tightening to prevent cracking the module housing.
13. 13

    Reinstall radio connections (if removed)
    If the radio was disconnected, reconnect all wiring harness connectors by aligning and pushing firmly until locking tabs engage. Reconnect the antenna lead by pushing straight in until it seats fully. Verify all connections are secure.
14. 14

    Reinstall center console trim bezel
    Position the center console trim bezel over the climate control module and radio, aligning the bezel with the dashboard opening. Starting at one corner, press firmly on the bezel around its perimeter to engage all retaining clips. Work around the entire bezel, ensuring all clips snap into place and the bezel sits flush with the dashboard. Verify no gaps exist between the bezel and dashboard.

Reassembly

1. Reconnect negative battery cable to battery terminal and tighten securely.
2. Turn ignition to ON position (engine off) and verify climate control illumination functions properly.
3. Test all climate control functions: temperature adjustment, mode selection, and blower motor speeds.
4. Verify proper airflow from all vent positions (defrost, dash vents, floor) by manually selecting each mode.
5. If airflow is incorrect or cables bind, adjust cable positions at the module or at the heater box end until proper operation is achieved.
6. Re-enter radio security code if applicable and reset clock and radio presets.

Verification

• With engine running and climate control system operating, verify temperature control adjusts from full hot to full cold smoothly without binding.
• Verify mode control selector moves freely through all positions and airflow direction changes appropriately for each setting.
• Test all blower motor speeds from low to high; verify smooth operation at each speed setting.
• Verify climate control illumination functions when headlights or parking lights are turned on.
• Check for air leaks around the dashboard trim bezel; all clips should be fully engaged with no gaps or rattles.
• Operate controls through multiple cycles to ensure cables maintain proper adjustment and do not slip.

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