This is From My GM factory Parts Manual for the 1988-1992 Pontiac W body cars.
in the Green pages 0.000-Group 0-2
it states this
RPO Codes
Y92-Special Edition Option, "SE"(Use with Custom Feature package B4M)
Z7M-Pontiac Grand Prix "SE" (Merchandising option)(2wm37 + Z7M =2WP37)
And this is under
1989-1990 W37 Master illustation-TURBOGRAND Prix (Y92,Z7M)
So what ever that means that what I have.
1
My carfax says "Pontiac Grand Prix McLaren".
VIN: 1G5WP14V1LF28xxxx
Year/Make/Model: 1990 PONTIAC GRAND PRIX MCCLAREN
Body Style: COUPE
Engine: 3.1L V6 MFI TURBO
Fuel: GASOLINE
Driveline: FRONT WHEEL DRIVE
Carburetion: TURBO FUEL INJECTED, 1, 2, OR 4 BARREL CARB
Cylinders: 6
Manufactured in: UNITED STATES
Mine
VIN: 1G5WT54V5LF27xxxx
Year/Make/Model: 1990 PONTIAC GRAND PRIX STE
Body Style: SEDAN 4 DR
Engine: 3.1L V6 MFI TURBO
Fuel: GASOLINE
Driveline: FRONT WHEEL DRIVE
Carburetion: TURBO FUEL INJECTED, 1, 2, OR 4 BARREL CARB
Cylinders: 6
Manufactured in: UNITED STATES
the one I may Buy in Jan
VIN: 1G5WT54V5LF29xxxx
Year/Make/Model: 1990 PONTIAC GRAND PRIX STE
Body Style: SEDAN 4 DR
Engine: 3.1L V6 MFI TURBO
Fuel: GASOLINE
Driveline: FRONT WHEEL DRIVE
Carburetion: TURBO FUEL INJECTED, 1, 2, OR 4 BARREL CARB
Cylinders: 6
Manufactured in: UNITED STATES