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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 223 (HVAC SYSTEMS - MANUAL)REPAIR INSTRUCTIONSRECIRCULATION ACTUATOR REPLACEMENTINSTALLATION PROCEDURE
2006 Chevrolet Suburban C2500, 6.0 U

Installation Procedure

2006 Chevrolet Suburban C2500, 6.0 USECTION Installation Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the recirculation door actuator (7) and the linkage.
  2. Install the evaporator and blower module assembly cover (3).
    CAUTION: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
  3. Install the screws.

    Tighten 

    Tighten the screws to 1.9 N.m (17 lb in).

    Fig 1: Installing Recirculation Door Actuator & Linkage
    G01269587Courtesy of GENERAL MOTORS CORP.
  4. Install new sealing washers to the evaporator inlet and outlet tubes. Refer to SEALING WASHER REPLACEMENT .
  5. Install the evaporator inlet tube (4) to the evaporator (5).
  6. Install the evaporator inlet tube retaining nut (3).

    Tighten 

    Tighten the nut to 16 N.m (12 lb ft).

    Fig 2: Installing Evaporator Inlet Tube
    G01269588Courtesy of GENERAL MOTORS CORP.
  7. Install the evaporator outlet hose and retaining nuts (4,5).

    Tighten 

    Tighten the nut to 18 N.m (13 lb ft).

  8. Connect the low pressure sensor electrical connector.
  9. Connect the blower motor electrical connector.
  10. Connect the blower motor resistor assembly electrical connector.
  11. Evacuate and recharge the A/C system. Refer to REFRIGERANT RECOVERY AND RECHARGING .
  12. Leak test the fittings of the repaired or replaced component. Refer to J-39400-A  .
    Fig 3: Installing Evaporator Outlet Hose & Retaining Nuts
    G01269589Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.