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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1709 (HVAC Systems - Troubleshooting) >> Repair Instructions >> HVAC Module Assembly Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the engine coolant. Refer to DRAINING AND FILLING COOLING SYSTEM in Engine Cooling.
  2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  3. Remove the instrument panel (I/P) carrier. Refer to INSTRUMENT PANEL (I/P) CARRIER REPLACEMENT in Instrument Panel, Gages and Console.
  4. Reposition the heater hose clamps using J 43181  . See Special Tools and Equipment .
  5. Disconnect the heater hoses from the heater core.
    6. Fig 1: Evaporator Tube At Evaporator
    GM735916Courtesy of GENERAL MOTORS CORP.
  6. Remove the retaining nut (3) from the accumulator (6) at the evaporator (1).
  7. Disconnect the accumulator (6) from the evaporator (1).
  8. Disconnect the evaporator tube (4) from the evaporator (1).
  9. Disconnect all of the electrical connectors to the HVAC module assembly.
  10. Remove the HVAC module assembly.
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