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 MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1037 (REAR DRIVE AXLE)
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Section 1037 (Rear Drive Axle)
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Section 1037 (Rear Drive Axle)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Visual Identification
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Locking/Limited Slip Rear Axle
- Diagnostic Starting Point - Rear Drive Axle
- Symptoms - Locking/Limited Slip Rear Axle
- Symptoms - Rear Drive Axle
- Rear Drive Axle Noises
- Noisy in Drive
- Noisy When Coasting
- Intermittent Noise
- Constant Noise
- Noisy on Turns
- Wheel Bearing Wear - Rear Drive Axle (Straight)
- Rear Axle Lubricant Leak Diagnosis
- Locking Differential Diagnosis
- Locking Rear Axle Does Not Lock
- Locking Rear Axle Locks in Turns
- Locking Rear Drive Axle Chatters in Turns
- Noise in Addition to Normal Clutch Engagement
- Repair Instructions
- Lubricant Level Inspection - Rear Drive Axle (8.6, 9.5 LD Axle)
- Lubricant Level Inspection - Rear Drive Axle (9.5 HD Axle)
- Lubricant Replacement - Rear Drive Axle (8.6 Inch Axle)
- Lubricant Replacement - Rear Drive Axle (9.5 Inch LD Axle)
- Lubricant Replacement - Rear Drive Axle (9.5 Inch HD Axle)
- Vent Hose Replacement
- Rear Axle Housing Cover and Gasket Replacement
- Rear Axle Shaft Replacement (8.6, 9.5 LD Axle)
- Rear Axle Shaft Replacement (9.5 HD Axle)
- Rear Axle Shaft Seal and/or Bearing Replacement (8.6, 9.5 LD Axles)
- Rear Axle Shaft Seal and/or Bearing Replacement (9.5 HD Axle)
- Drive Pinion Flange/Yoke and/or Oil Seal Replacement
- Drive Pinion and Ring Gear Replacement
- Drive Pinion Bearings Replacement
- Differential Replacement
- Differential Side Bearings Replacement
- Rear Axle Replacement (15 Series)
- Rear Axle Replacement (25 Series)
- Rear Axle Housing Replacement
- Differential Overhaul (8.6 Inch Axle)
- Differential Overhaul (9.5, 9.5LD Inch Axles)
- Bearings Inspection
- Differential Inspection
- Pinion and Ring Gear Inspection
- Rear Axle Housing Inspection
- Shims Inspection
- Pinion Depth Adjustment (10.5 Inch Axle)
- Pinion Depth Adjustment (8.6, 9.5, 9.5LD Inch Axles)
- Differential Side Bearing Preload Adjustment (8.6 Inch Axle)
- Differential Side Bearing Preload Adjustment (9.5, 9.5LD Inch Axles)
- Backlash Adjustment (8.6 Inch Axle)
- Backlash Adjustment (9.5 Inch Axle)
- Gear Tooth Contact Pattern Inspection
- Notes
- Drive Pinion and Ring Gear Identification
- Gear Tooth Nomenclature
- Adjustments Affecting Tooth Contact
- Testing Procedure
- Correct Contact Pattern
- Drive Side Heel - Coast Side Toe Contact Pattern
- Drive Side Toe - Coast Side Heel Contact Pattern
- Drive Side Heel - Coast Side Heel Contact Pattern
- Drive Side Toe - Coast Side Toe Contact Pattern
- High Flank Contact Pattern
- Low Flank Contact Pattern
- Locking Differential Disassemble (8.6, 9.5 Inch Axles)
- Locking Differential Clutch Disc Assembly - Disassemble (8.6 Inch Axle)
- Locking Differential Clutch Disc Assembly - Disassemble (9.5 Inch Axle)
- Locking Differential Cam Unit Disassemble (9.5 Inch Axle)
- Locking Differential Cleaning and Inspection
- Locking Differential Cam Unit Assemble (8.6 Inch Axle)
- Locking Differential Cam Unit Assemble (9.5 Inch Axle)
- Locking Differential Clutch Disc Assembly - Assemble (8.6 Inch Axle)
- Locking Differential Clutch Disc Assembly - Assemble (9.5 Inch Axle)
- Locking Differential Adjustment (8.6 Inch Axle)
- Locking Differential Adjustment (9.5 Inch Axle)
- Locking Differential Assemble (9.5 Inch Axle)
- 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.