For 1990-2009 cars

Application | GM SPO Group Number
--- | ---
Ashtray Lamp | 8.991
Cargo Lamp | 9.988
Cargo Lamp Switch | 9.988
Cornering and Front Fog Lamp | 2.585
Daytime Running Lamp Relay | 2.485
Door Jamb Switch | 16.494
Dome Lamp | 16.494
Dome Lamp Housing | 16.494
Dome Lamp Lens | 16.495
Dome Lamp Wiring Harness | 16.495
Door and Endgate Lamp | 16.263
Door and Endgate Switch | 16.263
Front Foglamp | 2.725
Front Park/Turn Signal Lamp | 2.585
Front Sidemarker Lamp | 2.575
Headlamp Adjuster | 2.737
Headlamp Bulb | 2.727
Headlamp Filler Trim | 2.728
Headlamp Harness | 2.727
Headlamp High Beam | 2.727
Headlamp High Beam Relay | 2.727
Headlamp Housing | 2.725
Headlamp Mounting Bracket | 2.726
Headlamp Retainers | 2.726
Headlamp Shield | 2.726
High Mount Stop Lamp | 2.679
Park/Turn Signal Lamp | 2.585
Rear License Plate Lamp | 2.700
Rear Sidemarker Lamp | 2.575
Rear View Mirror Reading Lamp | 8.991
Sunshade Lamp | 8.991
Sunshade Lens | 16.070
Taillamp | 2.679
Taillamp Reflector | 2.689
Turn Signal Lamp | 2.880
Turn Signal/Warning Lamp Flasher | 2.892
Underhood Lamp | 8.890