For 1990-2009 cars

Application | GM SPO Group Number
--- | ---
Cargo Lamp | 9.988
Daytime Running Lamp Ambient Light Sensor | 2.485
Daytime Running Lamp Control Module | 2.485
Door Jamb Switch | 16.494
Dome Lamp | 16.494
Dome Lamp Housing | 16.494
Dome Lamp Lens | 16.495
Dome Lamp Override Switch | 11.927
Front Foglamp | 2.725
Front Park/Turn Signal/Side Marker Lamp | 2.585
Front Park/Turn Signal/Sidemarker Lamp Bulb | 8.991
Headlamp Adjuster | 2.737
Headlamp Bulb | 2.727
Headlamp Housing | 2.725
Headlamp Switch | 239.22
High Mount Stop Lamp | 2.679
Instrumrnt Panel Compartment Lamp | 10.275
Instrument Panel Courtesy Lamp | 8.991
Overhead Console Reading Lamp Bulb | 8.991
Rear License Plate Lamp | 2.700
Rear Turn Signal Lamp Bulb | 2.880
Repeater Lamp | 2.575
Side Rail Reading Lamp | 11.927
Side Rail Reading Lamp Bulb | 11.927
Switch Bank | 12.188
Taillamp/Rear Turn Signal/Brake Lamp/Rear Fog Lamp | 2.679
Taillamp Bulb | 8.991
Turn Signal/Warning Lamp Flasher | 2.892
Vanity Mirror Lamp | 8.991
Vanity Mirror Lamp Lens | 16.070