GM Service Manual Online
For 1990-2009 cars only

GM SPO Group Numbers

Application

GM SPO Group Number

Transfer Case Control Lever Seat

4.570

Transfer Case Shift Lever Boot Plate Retainer

4.570

Transfer Case Control Lever (Includes Inner Boot)

4.570

Transfer Case Control Lever Knob

4.570

Transfer Case Control Lever Lever (Outer) Boot

4.570

Transfer Case Shift Control Lever Middle Bolt

4.570

Transfer Case Control Lever Bolt

4.570

Transfer Case Select (4 Wheel Drive) Switch

4.563

Transfer Case Select (Low) Switch

4.563

Transfer Case (Rear and Front Output Shaft Oil Seals

4.515

Transfer Case Oil Drain Plug

4.510

Transfer Case Brace

4.500

Transfer Case (Complete) Includes Cases and Internal Parts

4.510