GM Service Manual Online
For 1990-2009 cars only

GM SPO Group Numbers

Application

GM SPO Group Number

Backup Lamp

2.679

Cargo Lamp

9.988

Foglamp

2.725

Front Parking Lamp

2.585

Headlamp Bezel

2.728

Headlamp Door

2.728

High Mount Stop Lamp

2.679

Instrument Panel Compartment Lamp

10.275

Rear Fog Lamp

2.679

Rear License Lamp

2.700

Repeater Lamp

2.585

Tail Lamp

2.679

Under Hood Lamp

8.890