Pontiac Grand Am — Third generation (1985–1991)
The third-generation Grand Am was Pontiac's front-drive N-body compact for the 1985–1991 model years, a coupe from 1985 with an LE trim, a sedan and the SE trim added in 1986 (Wikipedia). The NICB VIN manuals list the Grand Am and Grand Am LE in 1985 and the Grand Am, Grand Am LE and Grand Am SE in the later years. No GM order guide, data book, Heritage kit or service RPO list for this Grand Am is in the archive, no Chevrolet kit shares its platform, and the Pontiac enthusiast sources in the tier map cover the Firebird, the Fiero and the 1997–2000 cars, not this one. Only engine and package codes are therefore listed: Wikipedia's Grand Am article and its engine articles name and date each engine and the one package, and no source read prints a transmission, axle, option, paint or trim code for this Grand Am with a year.
Codes
Engines
| Code | Description | Years | Models/Notes | Confidence |
|---|---|---|---|---|
| LN7 | Engine, 3.0L V6, multiport fuel injection (VIN L) | 1985–1987 | optional Buick V6, 125 hp, with the automatic transmission only; Wikipedia's Grand Am article prints LN7 in its infobox and dates the engine from 1985 to its mid-year discontinuation; its Buick V6 engine article lists the Grand Am for 1985–1987 and gives the VIN letter (not independent); it was the SE's standard engine when the SE arrived | single-source |
| LT3 | Engine, 2.0L L4, turbocharged, multiport fuel injection | 1987–1989 | 165 hp, SE; Wikipedia's Grand Am article names LT3 in its infobox and says the turbo engine arrived in 1987 and gave way to LD2 as the SE's standard engine in 1989; its Family II engine article lists the Grand Am SE for 1987–1989 (not independent); cars with it carry a turbo boost gauge | single-source |
| LD2 | Engine, 2.3L L4, DOHC, multiport fuel injection (Quad 4) | 1988–1991 | Oldsmobile-built, 160 hp; Wikipedia's Grand Am article gives it for 1988–1991 (optional from 1988, standard in the SE from 1989, and the only Quad 4 with the automatic in 1990 and 1991); its Quad 4 engine article lists the Grand Am (not independent) | single-source |
| LG0 | Engine, 2.3L L4, DOHC, high output, multiport fuel injection (Quad 4) | 1989–1991 | 180 hp, SE; manual 5 speed only, not with the automatic; the first 200 were red coupes with gray interior, late in the model year; Wikipedia's Grand Am article and its Quad 4 engine article (not independent) | single-source |
Packages & Trims
| Code | Description | Years | Models/Notes | Confidence |
|---|---|---|---|---|
| W32 | Sport performance package, LE | 1990–1991 | SE ground effects without the wheel-well flares, the SE drive train, 14 inch aluminum wheels and the SE's larger front and rear sway bars, for the LE; Wikipedia's Grand Am article prints RPO W32 and says the option arrived late in the model year run; its Quad 4 engine article lists the Grand Am LE with W32 for 1990–1991 (not independent); GM's wider lists read W32 as a deluxe sport package, a different wording | single-source |
Sources
Factory documents (T1)
No Pontiac factory document or Heritage kit for the 1985–1991 Grand Am is in docs/factory-docs/ or docs/heritage-ocr/ (the Pontiac RPO code lists there start with 1998), and the brief lists no Chevrolet kit pages, so none is cited.
Other sources
- https://en.wikipedia.org/wiki/Pontiac_Grand_Am — third-generation infobox, text and engine lists (retrieved 2026-11-05 as wikitext, action=raw)
- https://en.wikipedia.org/wiki/Buick_V6_engine — LN7 introduction, VIN letter and application list (retrieved 2026-11-05 as wikitext)
- https://en.wikipedia.org/wiki/GM_Family_II_engine — LT3 application list (retrieved 2026-11-05 as wikitext)
- https://en.wikipedia.org/wiki/Quad_4_engine — LD2 and LG0 application lists and the W32 line (retrieved 2026-11-05 as wikitext)
- https://rparts-sites.s3.amazonaws.com/dec399b0838336997484042ed2af1004/design/rpoCodes.pdf and https://jameshalderman.com/wp-content/uploads/2019/04/RPO_Codes.pdf — GM-wide code lists (T3), used only to check what LN7, LT3, LD2, LG0 and W32 mean (read from the copies already extracted for sibling docs, 2026-11-05)
- NICB Passenger Vehicle Identification Manual, GM sections (T4):
docs/reference/nicb/nicb1985-gm.txtp.60 andnicb1991-gm.txtp.38, and the 1986 Pontiac pages (PDF pp.28 and 74–76), read on the page images; the 1987–1990 manuals' OCR text also lists the Grand Am, Grand Am LE and Grand Am SE — Grand Am, Grand Am LE and Grand Am SE car-line names and the Pontiac engine descriptions