Automatic Transmission - Allison for Chevrolet Chevrolet C-Series Medium Duty Truck B7 1999

All Description and Operation

• Transmission System Description and Operation

Cleaning, Inspection, and Adjustment

• Parts Cleaning and Inspection
• Range Selector Pointer Adjustment
• Shift Cable Adjustment
• Transmission Fluid Cooler and Line Flushing
• Transmission Modulator Cable Adjustment
• Vacuum Modulator Inspection

Diagnostic Procedures

• Dirty Fluid
• Excessive Creep in First and Reverse Gears
• Excessive Slip and Clutch Chatter Only One Range
• Fluid Leaking into Converter Housing
• Fluid Out of Fill Tube or Breather
• High Stall Speed
• Intermittent Buzzing Noise
• Low Lubrication Pressure
• Low Main Pressure in All Ranges
• Low Main Pressure in First Gear
• Low Stall Speed
• No Response to Movement of Shift Lever
• Oil Leak Diagnosis
• Output Shaft Seal Fluid Leak
• Rough Shifting
• Shift Speed Too High
• Shift Speed Too Low
• Slips in All Forward Ranges
• Slips in Fourth and Reverse Gear Only
• Slips in Reverse and First Gear Only
• Transmission Overheats in All Ranges
• Vehicle Moves Backward in Neutral
• Vehicle Moves Forward in Neutral

Disassembly, Overhaul, Repair, and Assembly

• Case Porosity

Mechanical Specifications

• Fastener Tightening Specifications
• Fluid Capacity Specifications

Removal, Installation, and Replacement

• External Transmission Oil Filter Replacement
• Range Selector Replacement
• Shift Cable Replacement
• Transmission Control Module Replacement
• Transmission Fluid Check
• Transmission Fluid Pan and Filter Replacement
• Transmission Modulator Replacement
• Transmission Modulator Valve Replacement
• Transmission Oil Cooler Line Replacement
• Transmission Oil Level Indicator Tube Replacement
• Transmission Replacement