Skylark — N-body (1986–1991)

Wikipedia's Skylark article dates it 1986–1991, supplied by Pontiac; gnttype.org's 1987 Buick VIN table prints it for the Skylark Custom and Limited four-door, a second source (owner ruling, 2026-11-05: a T3 page that names the code for the nameplate, with Wikipedia dating every year); the 1986 NICB manual's engine table prints the 2.5 L four-cylinder throttle-body letter U

Wikipedia's Skylark article gives it to the Skylark for 1986–1988 and says it was replaced by the 3.3 L V6 (1989); it was the engine of the T-Type, new for 1987; gnttype.org's 1986 and 1987 tables print LN7 only on the Somerset rows, never the Skylark's, so the nameplate's own sources print the code only in Wikipedia; Wikipedia's Buick V6 article lists the Skylark 1986–1988 (not an independent source); the VIN letter is from the 1986 NICB engine table (3.0 L V6 MFI)

Oldsmobile-built; Wikipedia's Skylark article and its Quad 4 engine article both give it to the Skylark 1988–1991 (not independent); no other source read prints the code for the Skylark

160 hp, replaced the 3.0 L V6; Wikipedia's Skylark article gives it 1989–1991; its Buick V6 engine article lists the Skylark for 1989 on (not independent); no other source read prints the code for the Skylark