I was kinda interested and it was AMC built from when AMC owned chryler:

Available engines:

1984-1996 2.5 L AMC I4, 121 hp-125 hp
1984-1986 2.8 L GM 60° LR2 V6
1985-1987 2.1 L Renault turbodiesel I4 (initially sold in US and until 1993 in Europe)
1987-1990 4.0 L AMC I6, 173-177 hp Renix Fuel Injection
1991-1996 4.0 L AMC "High Output" I6, 190 hp Chrysler Fuel Injection
1994-1996 2.5 L VM Motori turbodiesel I4 (sold in Europe)

But you were right that it had a 2.8L GM engine at one time. I had no idea