Buy OEM 1991 Buick Part # 15816809 (25735852). Active Suspension Control Module

Module. Control.
Active Suspension Control Module. Active Body (ABC) Unit. Dynamic Suspension Unit.

Active Suspension Control Module

Fits STS

STS, STS-V.
Active Suspension System Control Module - Repair or Replace
If the ride height on your 1991 Buick won’t raise up or you see a suspension system warning light or error message, the fault may lie in your air spring suspension system. A Buick technician is qualified to diagnose and repair the system using genuine parts.