GM Service Manual Online
For 1990-2009 cars only

GM SPO Group Numbers

Application

GM SPO Group Number

Park and Neutral Position Switch

4.054

Transmisson Control Lever

4.006

Transmission Control Lever Knob

4.006

Transmission Control Position Indicator bulb

4.022

Transmission Fluid Drain Plug

4.104

Transmission Gasket Kit

4.005

Transmission Range Select Lever Cable

4.047

Transmission Range Select Lever Cable Retainer

4.047

Transmission Shift Lock Control Solenoid

4.053

Transmission Shift Lock Park Switch

4.053

Transmission T.V. Cable

4.050