An extra 10 horses and detail improvements couldn’t keep Buick’s 1987 Riviera from skidding to record low sales of just 15,223 units. Graphic Control Center had its membrane function switches replaced by touch switches.  GCC now Incorporated standard oil pressure gauge, and an ambient light sensor allowing retention of full brightness when headlights were used during … Continue reading 1987 Buick Riviera Manufacturer Promo