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Pontiac Trans Am GTA (Y84, 1987–1992)

Pick options below. Plenum returns the count for that configuration when it’s publicly tabulated. Add a configuration to your Garage to stand it next to another in two-car compare.

built this way

no published count

This combination isn’t publicly tabulated. Plenum surfaces what the registries and the fact-data books document; combinations beyond that get an honest blank rather than a guess.

Engine
Transmission

code fingerprint

A car matching Pontiac · Trans Am GTA (Y84) would carry codes that look like:

GM 17-character FMVSS VIN

1G2FW_____L______
show position legend
  1. 11WMI region (USA)
  2. 2GWMI manufacturer (GM)
  3. 32Make (Pontiac division)
  4. 4FF-body (Firebird/Camaro)
  5. 5WSeries (Trans Am)
  6. 6_Body style — varies by hardtop / T-tops / convertible
  7. 7_Restraint system — varies by year
  8. 8_Engine — varies — F / 8
  9. 9_Check digit — varies
  10. 10_Model year (varies — 6 model years (1987–1992))
  11. 11LPlant (L)
  12. 12_Sequential — varies
  13. 13_Sequential cont.
  14. 14_Sequential cont.
  15. 15_Sequential cont.
  16. 16_Sequential cont.
  17. 17_Sequential cont.

GTA-specific identification (Y84) lives on the SPID label, not in the VIN. Engine + plant variability depends on the model year and the option mix.

GM SPID — Service Parts Identification label

Y84 — GTA package (this is what makes it a GTA, not the VIN)
engine RPO: LB9 or L98 (varies)
paint / trim / option RPOs (CC1 T-tops, MD8 auto, GU6 axle, etc.): vary per build

The SPID is the load-bearing identification for GTA / IROC-Z / TTA / 1LE — the VIN doesn't encode option packages.

Underscores (_) mark positions that vary build-to-build — the 6-digit sequential number is always different per car, plus any position the configuration didn't pin to a single value (engine, plant, body style if the car was offered in more than one).

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citations for this count

  • thirdgen-org
  • ncpontiacs

reference photos

Rear three-quarter view of a medium green metallic 1991 Pontiac Trans Am GTA
Phil's 1991 Trans Am GTA — rear three-quarter. The full-width PONTIAC tail-lamp panel is the third-gen Trans Am signature; the side-quarter GTA badge marks the Y84 package. Aftermarket C&C fiberglass hatch in place of the OEM glass; gold cross-lace 16-inch GTA wheels.Phil Renato (owner) — used with permission
Side profile of a 1991 Pontiac Trans Am GTA in autumn light next to a barn
Side profile, fall light. John Schinella's Pontiac No. 2 Studio shape — lower nose, pop-up headlamps, the WS6 wheel package that came standard on Y84.Phil Renato (owner) — used with permission
Evening rear three-quarter of a 1991 Pontiac Trans Am GTA in a parking lot
GTA at evening light — the rear spoiler, the gold cross-lace wheels, the C&C fiberglass hatch reading slightly different in finish from the body panels under closer scrutiny.Phil Renato (owner) — used with permission
1991 Pontiac Trans Am GTA in foreground with 1970 Dodge Super Bee under awning behind
Both cars in frame — GTA in the foreground, Super Bee under the awning behind. Twenty-one years separating the two.Phil Renato (owner) — used with permission

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