Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1653 (HVAC SYSTEMS - TROUBLESHOOTING)
2004 Oldsmobile Bravada AWD
Section 1653 (HVAC Systems - Troubleshooting)
2004 Oldsmobile Bravada AWDSECTION Section 1653 (HVAC Systems - Troubleshooting)
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.
- Specifications
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Heating, Ventilation and Air Conditioning
- Leak Testing
- Air Conditioning (A/C) System Performance Test
- Air Conditioning (A/C) Diagnostics - Pressure Zone A
- Air Conditioning (A/C) Diagnostics - Pressure Zone B
- Air Conditioning (A/C) Diagnostics - Pressure Zone C
- Air Conditioning (A/C) Diagnostics - Pressure Zone D
- Heating Performance Diagnostic
- Defrosting Insufficient (A/C Standard Equipment)
- Noise Diagnosis - Auxiliary Blower Motor
- Noise Diagnosis - Blower Motor
- Noise Diagnosis - Air Conditioning (A/C) System
- Noise Diagnosis - HVAC Module
- Odor Diagnosis
- Repair Instructions
- Odor Correction
- Refrigerant Recovery and Recharging
- Flushing
- Compressor Oil Balancing
- Compressor Replacement (Body Type VIN 3)
- Sealing Washer Replacement
- Compressor Sealing Washers Replacement
- O-Ring Replacement
- Compressor Hose Assembly Replacement (Body VIN Type 3)
- Evaporator Tube Replacement (Body VIN 3)
- Evaporator Tube Replacement (Body VIN 6)
- Expansion (Orifice) Tube Replacement (Body VIN Code 3)
- Expansion (Orifice) Tube Replacement (Body VIN Code 6)
- Compressor Relay Replacement
- Air Conditioning (A/C) Low Pressure Switch Replacement
- Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement
- Condenser Replacement
- Accumulator Replacement
- HVAC Module Assembly Replacement
- Evaporator Core Replacement
- Heater Hose Replacement - Inlet (Body Type VIN 6)
- Heater Hose Replacement - Inlet (Body Type VIN 3)
- Heater Hose Replacement - Outlet (LL8)
- Coolant Bypass Valve Replacement
- Blower Motor Relay Replacement
- Blower Motor Resistor Assembly Replacement
- Blower Motor Replacement
- Air Distributor Duct Replacement
- Air Outlet Replacement - Instrument Panel
- Air Outlet Replacement - Instrument Panel - Center
- Air Outlet Replacement - Instrument Panel - Right
- Air Outlet Replacement - Rear Floor
- Defroster Duct Replacement - Windshield
- Air Outlet Duct Replacement - Floor, LH
- Air Outlet Duct Replacement - Floor, RH
- Air Temperature Door Replacement
- Defroster Door Replacement
- Mode Door Replacement
- Recirculation Door Replacement
- Heater Core Replacement
- Blower Motor Resistor Replacement - Auxiliary
- Blower Motor Replacement - Auxiliary (Body VIN Type 3)
- Blower Motor Replacement - Auxiliary (Body VIN Type 6)
- Air Distribution Ducts Replacement - Auxiliary (Lower)
- Air Distribution Ducts Replacement - Auxiliary (Upper)
- Heater Core Replacement - Auxiliary
- Heater Core Cover Replacement - Auxiliary
- Thermal Expansion Valve Replacement - Auxiliary
- HVAC Module Replacement - Auxiliary
- HVAC Module Case Replacement - Auxiliary
- HVAC Module Case Sump Replacement - Auxiliary
- HVAC Module Pass Thru Seal Replacement - Auxiliary
- Evaporator Core Replacement - Auxiliary
- Evaporator Block Replacement - Auxiliary
- Heater and Air Conditioning (A/C) Pipe Replacement/Repair - Auxiliary
- Evaporator Drain Hose Replacement - Auxiliary
- Special Tools and Equipment
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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.