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 RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 964 (TRANSFER CASE (NVG126-NP4))
2004 Oldsmobile Bravada RWD
Section 964 (Transfer Case (NVG126-NP4))
2004 Oldsmobile Bravada RWDSECTION Section 964 (Transfer Case (NVG126-NP4))
WARNING: This page is about a different car, the 2002 Oldsmobile Bravada. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Transfer Case
- Diagnostic System Check - Transfer Case
- Scan Tool Data List
- Scan Tool Data Definitions
- Diagnostic Trouble Code (DTC) List
- DTC C0300: Open, Short To Ground, Short To Voltage Or Faulty Sensor
- DTC C0305: Open, Short To Ground, Short To Voltage Or Faulty Sensor
- DTC C0306: Open, Short To Voltage, Or Short To Ground In Motor Feed A Or Motor Control B Circuits, Or Open In Module Ground Circuit, Or An Open, Or Short To Ground Inside Motor
- DTC C0327: Encoder Signal Feed Back Out Of Range
- DTC C0374: Unable To Correct Sensed Wheel Slip
- DTC C0550: Critical Operational Parameters Stored In EEPROM Have Failed, Checksum Error
- Symptoms - Transfer Case
- Service Indicator Always On
- Service Indicator Inoperative
- Transfer Case Popping Noise
- Transfer Case Whine or Rumble Noise
- Transfer Case Grating Noise
- Transfer Case Clunk During Acceleration or Deceleration
- Transfer Case Shudder or Binding
- Transfer Case Leak Diagnosis
- Repair Instructions
- Transfer Case Shift Control Module Replacement
- Transfer Case Control Module Reprogramming
- Transfer Case Fluid Replacement
- Transfer Case Motor/Encoder Replacement
- Transfer Case Speed Sensor Replacement (Front)
- Transfer Case Speed Sensor Replacement (Right Rear)
- Transfer Case Speed Sensor Replacement (Left Rear)
- Transfer Case Output Shaft Seal Replacement - Front
- Transfer Case Output Shaft Seal Replacement - Rear
- Transfer Case Assembly Replacement
- Transfer Case Adapter Replacement
- Transfer Case Input Shaft Seal Replacement
- Description and Operation
- 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.