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.
2024 GMC Acadia AT4FACTORY OEM SERVICE PROCEDURE
Rear Drive Axle
- Specifications
- Schematic Wiring Diagrams
- Diagnostic Information and Procedures
- DTC C0090:
- DTC C0095:
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit / System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit / System Verification
- Circuit / System Testing
- Repair Instructions
- DTC C009C:, C05DD:, or C05E6:
- DTC C05E5:
- DTC C10C1:
- DTC C11BC: -C11BE:
- DTC C122F:
- DTC C1230: or C1231:
- DTC C1265: or C15CE:
- DTC C15CA:
- DTC C15CB: -C15CD:
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit / System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit / System Verification
- Circuit / System Testing
- Repair Instructions
- Symptoms - Rear Differential Carrier
- Noisy in Drive
- Noisy When Coasting
- Intermittent Noise
- Constant Noise
- Noisy on Turns
- Rear Axle Lubricant Leak Diagnosis
- Repair Instructions
- Rear Differential Clutch Control Module Replacement (Base, Uplvl, Denali)
- Rear Differential Clutch Control Module Replacement (AT4)
- Rear Axle Lubricant Level Inspection
- Rear Axle Lubricant Replacement (Base, Uplvl, Denali)
- Rear Axle Lubricant Replacement (AT4)
- Differential Clutch Oil Replacement
- Differential Carrier Bushing Replacement
- Driveline Torque Tube Replacement
- Rear Axle Shaft Seal Replacement (Base, Uplvl, Denali)
- Rear Axle Shaft Seal Replacement (AT4)
- Differential Carrier Assembly Replacement (Base, Uplvl, Denali)
- Differential Carrier Assembly Replacement (AT4)
- Differential Carrier Insulator Replacement
- Differential Drive Pinion Gear Seal Replacement
- Rear Differential Hydraulic System Service Fill / Bleed
- Description and Operation
- Special Tools and Equipment
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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