GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
2009
🢒
Sierra - 4WD
🢒
Transmission
🢒 Transfer Case - MP 1222/1225/1226-NQG
Transmission
All Description and Operation
Transfer Case Description and Operation
Transfer Case Identification
All Special Tools and Equipment
Special Tools
All Visual Identification
Transfer Case Disassembled View
Cleaning, Inspection, and Adjustment
Drive Chain, Drive Sprocket, and Driven Sprocket Cleaning and Inspection
Front Output Shaft and Input Shaft Cleaning and Inspection
High/Low Planetary Carrier Cleaning and Inspection
High/Low Shift Components Cleaning and Inspection
Oil Pump Cleaning and Inspection
Rear Output Shaft Cleaning and Inspection
Transfer Case Front Half Cleaning and Inspection
Transfer Case Rear Half Cleaning and Inspection
Two/Four Wheel Drive Shift Components Cleaning and Inspection
Diagnostic Procedures
Diagnostic Starting Point - Transfer Case
Four-Wheel Drive Does Not Disengage
Four-Wheel Drive Does Not Engage
Four-Wheel Drive Indicator Always On
Four-Wheel Drive Indicator Inoperative
Symptoms - Transfer Case
Transfer Case Clunk in 2HI Only
Transfer Case Clunk in 4HI
Transfer Case Clunk in 4LO
Transfer Case Growl or Grinding Noise
Transfer Case Jumps Out of Gear
Transfer Case Leak Diagnosis
Transfer Case Popping Noise
Transfer Case Whine or Rumble Noise
Transfer Case Will Not Shift
Diagnostic Trouble Codes
DTC P2160 or P2161
Disassembly, Overhaul, Repair, and Assembly
Front Output Shaft Drive Sprocket Bearing Replacement
Front Output Shaft Front Bearing Replacement
Front Output Shaft Rear Bearing Replacement
Input Shaft Pilot Bearing Replacement
Rear Output Shaft Bushing Replacement
Shift Detent Lever Bearing Replacement
Transfer Case Assemble
Transfer Case Disassemble
Electrical/Electronic Schematic Diagrams
Transfer Case Control Schematics
Mechanical Specifications
Fastener Tightening Specifications
Other Specifications
Adhesives, Fluids, Lubricants, and Sealers
Approximate Fluid Capacities
Removal, Installation, and Replacement
Front Output Shaft Seal Replacement
Input Shaft Seal Replacement
Rear Output Shaft Seal Replacement
Transfer Case Adapter Replacement
Transfer Case Assembly Replacement
Transfer Case Control Lever Replacement
Transfer Case Control Rod Replacement
Transfer Case Fluid Replacement
Transfer Case Rear Extension Bushing Replacement
Transfer Case Shield Replacement
Vehicle Speed Sensor Replacement