1986
For 1986, the Delta 88 switched platforms from the GM B platform to the relatively smaller front-wheel drive GM H platform, with a wheelbase of only 110.8 inches (2,814 mm). The headlights changed from square sealed beam quads to integrated regular/high beam composite lamps in 1987. In 1989, the prefix "Delta" was dropped, as was the hood ornament, leaving the model to simply become the "Eighty-Eight".
The Eighty-Eight was given a mild facelift in 1990 before being redesigned again in 1992.
Its model range during this time was the standard 88, the 88 Royale, and the 88 Royale Brougham, in upscale order.
Engines:
1986-1988.5 – 3.8L LG3 (231 in³) V6
1988.5-1991 – 3.8L 3800 Series I (231 in³) V6
Transmission:
1986-1988.5 – 440-T4 4-speed automatic overdrive
1988.5-1991 – 4T60 4-speed Automatic overdrive
Voice Diagnostic System
This generation of Delta 88s had a voice diagnostic system that alerted the driver of problems. The voice was male and computer synthesized.
In the event of a warning, the door chime played three times rapidly and then played the voice alert. This happened twice in case the driver missed the warning the first time. Every alert also had corresponding light on the instrument cluster.
Warnings included:
"The engine coolant level is low!"
"The engine is overheating! Please stop the engine and consult the owner's manual!"
"The park brake is not fully released!"
"The key is in the ignition!" (Upon opening the door with the key inserted into the ignition.)
"The headlights are on!" (Upon turning off the car with the headlights on.)
1992
The Oldsmobile Eighty Eight was redesigned for 1992 to follow up with the redesign of the Oldsmobile Ninety Eight. This would prove to be the last Eighty Eight or 88 model from Oldsmobile when it was replaced by the base V6 version of the Oldsmobile Aurora for 2001.
It was available as four different models:
1992–1999 Oldsmobile Eighty-Eight: A mainstream fullsize sedan
1992–1995 Oldsmobile Eighty-Eight Royale and Eighty-Eight Royale LS
1996–1999 Eighty-Eight LS: Replaced the Royale and Royale LS lineup.
1996–1999 Oldsmobile LSS: A "sports sedan" targeted to male European car buyers, available with a supercharged V6 and a floor mounted gear shifter. It is important to note, however, early LSS models (1995) were rarely equipped with the 3800 Supercharged engine.
1997–1998 Oldsmobile Regency: A luxury model that also replaced the Ninety-Eight
All four vehicles used the same 110.8 in (2,810 mm) wheelbase and shared an updated version of the GM H platform. The suspension tuning, interior appointments, and certain exterior trim was used to differentiate the three models.
Engine:
1992–1999 3.8 L (231 in³) V6
From 1992–1999, the Eighty Eights were produced in Lake Orion, Michigan. The last Oldsmobile LSS was produced on September 23, 1998. The last Oldsmobile Eighty Eight 50th Anniversary Edition was manufactured on January 6, 1999.