Rear Drive Axle for GMC Truck TopKick C-Series Commercial (Cutaway) C4/C5 2003

All Component Locator

• Rear Axle Component Views

All Description and Operation

• Rear Drive Axle Description and Operation
• Two Speed Rear Axle Shift System Description and Operation

All Special Tools and Equipment

• Special Tools

All Visual Identification

• Rear Axle Connector End Views
• Rear Axle Disassembled Views

Cleaning, Inspection, and Adjustment

• Backlash Adjustment
• Bearings Inspection
• Differential Carrier Bearing Preload Adjustment
• Differential Inspection
• Gear Tooth Contact Pattern Inspection
• Pinion and Ring Gear Inspection
• Pinion Depth Adjustment
• Rear Axle Housing Inspection
• Rear Axle Lubricant Level Inspection
• Shims Inspection
• Wheel Bearing Adjustment

Diagnostic Procedures

• Air Leakage Test
• Diagnostic Starting Point - Rear Drive Axle
• Rear Axle Lubricant Leak Diagnosis
• Symptoms - Rear Drive Axle
• Two Speed Rear Axle Air Shift Control Valve Diagnosis
• Two Speed Rear Axle Inoperative
• Two Speed Rear Axle Pressure Protection Valve Diagnosis
• Two Speed Rear Axle Shift Motor Diagnosis
• Two Speed Rear Axle Shift Quick Release Valve Diagnosis

Disassembly, Overhaul, Repair, and Assembly

• Differential Overhaul

Electrical/Electronic Schematic Diagrams

• Two-Speed Rear Axle Schematics

General Diagnostic Information

• Constant Noise
• Intermittent Noise
• Noisy in Drive
• Noisy on Turns
• Noisy When Coasting
• Rear Drive Axle Noises
• Wheel Bearing Wear - Rear Drive Axle

Mechanical Specifications

• Axle Preload and Backlash Specifications
• Fastener Tightening Specifications

Other Specifications

• Adhesives, Fluids, Lubricants, and Sealers

Removal, Installation, and Replacement

• Differential Replacement
• Differential Side Bearings Replacement
• Drive Pinion and Ring Gear Replacement
• Drive Pinion Bearings Replacement
• Drive Pinion Flange/Yoke and/or Oil Seal Replacement
• Rear Axle Housing Cover and Gasket Replacement
• Rear Axle Housing Replacement
• Rear Axle Hub, Bearing, Cup, and/or Seal Replacement
• Rear Axle Lubricant Replacement
• Rear Axle Shaft and/or Gasket Replacement
• Two Speed Rear Axle Air Shift Control Valve Replacement
• Two Speed Rear Axle Pressure Protection Valve Replacement
• Two Speed Rear Axle Shift Control Switch Replacement
• Two Speed Rear Axle Shift Motor Relay Replacement
• Two Speed Rear Axle Shift Motor Replacement
• Two Speed Rear Axle Shift Quick Release Valve Replacement
• Vent Hose Replacement