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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 31 (HVAC SYSTEMS - MANUAL)REMOVAL & INSTALLATIONHVAC MODULE ASSEMBLYINSTALLATION
2004 Oldsmobile Bravada AWD

HVAC Module Assembly: Installation

2004 Oldsmobile Bravada AWDSECTION Installation
WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the HVAC module assembly to the vehicle. Install the nuts which secure the HVAC module assembly to the dash. Tighten the nuts to specification. See TORQUE SPECIFICATIONS . Install the evaporator drain elbow. Connect the electrical connectors to the HVAC module assembly.
  2. Connect the vacuum hoses to the HVAC module assembly. Install the heater core outlet cover. Install the screws to the heater core outlet cover. Tighten the screws to specification. Install the cross vehicle beam to the vehicle. Do NOT tighten the bolts at this time. Install the bolts which secure the right cross vehicle beam to the hinge pillar.
  3. Install the bolts which secure the left cross vehicle beam to the hinge pillar. Tighten the bolts to specification. Install the bolt to the cross vehicle beam. Tighten the bolt to specification. Install the bolts to the upper support brackets of the HVAC module. Tighten the bolts to specification. Install the center support bracket to the HVAC module. Install the bolts to the center support bracket of the HVAC module. Tighten the bracket bolts to specification. See TORQUE SPECIFICATIONS .
  4. Install the instrument panel wiring harness on to the cross vehicle beam and secure the retaining clips. Install the two screws below the fuse block that support the main wire harness connector to the cross vehicle beam. Install the BCM bracket and the bolts. Tighten the bolts to specification. Install the relay bracket and the bolts. Tighten the bolts to specification.
  5. Install the right and left side air distribution ducts. Install the screws to the right and left side air distribution duct. Tighten the screws to specification. Install the support bracket and bolts for the steering column. Tighten the nuts to specification. Install the brake pedal. Install the passenger side SIR inflator module. Install the instrument panel trim pad.
  6. Connect the inlet and outlet heater hose to the heater core. Important: Reposition the heater core hose clamps in the indicated location. See Figure. Use Hose Clamp Pliers in order to reposition the heater hose inlet and outlet clamp to the heater core.
  7. Connect the evaporator tube to the evaporator. Connect the accumulator tube to the evaporator. Install the accumulator tube to evaporator core block fitting bolt. Tighten the bolt to specification.
  8. On vehicles with 3.8L engine, install the fuel injector sight shield. Fill the cooling system. Install the cross vehicle brace. Evacuate and recharge the A/C system. See RECOVERY, EVACUATION & RECHARGING in GENERAL SERVICING PROCEDURES article in GENERAL SERVICING.
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.