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 682 (TRANSFER CASE - NVG 246-NP8 (2-SPEED AUTOMATIC))
2004 Oldsmobile Bravada AWD
Section 682 (Transfer Case - NVG 246-NP8 (2-Speed Automatic))
2004 Oldsmobile Bravada AWDSECTION Section 682 (Transfer Case - NVG 246-NP8 (2-Speed Automatic))
WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic & Routing Diagrams
- Component Locator
- Diagnostic Information & 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 B2725: Voltage Level Outside The Possible Range
- 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 C0308: Short To Ground In Motor Control A Or Motor Control B Circuit
- DTC C0309: Short To Voltage In The Motor Control A Or Motor Control B Circuits, Or Shorted Motor
- DTC C0310: Open In The Motor Control A Or Motor Control B Circuits, Or An Open Motor
- DTC C0315: Open In The Module Ground Circuit
- DTC C0323: Open Lock Control Circuit Or An Open Lock Feed
- DTC C0324: Transfer Case Lock Output Voltage High
- DTC C0327: Transfer Case Shift Control Module Voltage
- DTC C0367: Front Axle Output Voltage High
- DTC C0374: Unable To Correct Sensed Slip
- DTC C0376: Greater Than 20% Difference In The Speed Sensor Inputs
- DTC C0387: Transfer Case Is Unable To Successfully Complete A Shift To A Requested Mode Or Range
- DTC C0550: EEPROM Or RAM Failure
- DTC C0611: No Valid VIN Digit For The Correct Application
- Symptoms - Transfer Case
- Front Axle Will Not Engage
- Front Axle Will Not Disengage
- Transfer Case Will Not Complete A Mode Or Range Shift
- Transfer Case Shift Control Switch Inoperative
- No Correction For Slip In AWD Mode
- Service Indicator Always On
- Service Indicator Inoperative
- Transfer Case Shift Control Switch Indicator Always On - Two or More
- Transfer Case Shift Control Switch Indicator Flashes 10 Seconds, Then Returns To Previous Mode
- Transfer Case Shift Control Switch Indicators Flash Continuously
- Transfer Case Shift Control Switch Indicator Inoperative - One or More
- Transfer Case Popping Noise
- Transfer Case Whine Or Rumble Noise
- Transfer Case Growl Or Grinding Noise
- Transfer Case Grating Noise
- Transfer Case Clunk In 2HI Only
- Transfer Case Clunk In 4HI
- Transfer Case Clunk In 4LO
- Transfer Case Clunk During Acceleration & Deceleration
- Transfer Case Shudder Or Binding
- Transfer Case Leak Diagnosis
- Repair Instructions
- Transfer Case Shield Replacement
- 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 Input Shaft Seal Replacement
- Transfer Case Adapter Replacement
- Transfer Case Shift Control Switch Replacement
- Transfer Case Shift Control Module Replacement
- Description & Operation
- Special Tools & 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.