GM Service Manual Online
For 1990-2009 cars only

GM SPO Group Numbers for Chevrolet Chevrolet C-Series Medium Duty Truck B7 2000

Application

GM SPO Group Number

Rear Axle

5.386

Rear Axle Switch

5.660

Rear Axle Shift

5.660

Pressure Protection Valve

4.644

Differential Lock Valve

4.644

Differential Lock

4.644

Differential Lock-Bendix

5.511