This GM 12088590 Display Illumination Control Module is a must-have for any car enthusiast who wants to restore their 1990-93 Grand Prix to its original state. This NOS OEM part will fit perfectly and will provide optimal performance for your vehicle. The module is designed to control the display illumination of your car, making it easier to read and operate at all times. The brand of this part is GM and the manufacturer part numbers are 12088549, 12088590, and 12088542. It is compatible with other car and truck parts and accessories and falls under the category of Motors. This item is a rare find and will definitely be a great addition to your collection.