A - All Catalogs
B - Buick
K - Cadillac
C - Chevrolet
H - Hummer
L - Light Truck
LB - Lt Truck Buick
LK - Lt Truck Cadillac
LC - Lt Truck Chevrolet
LG - Lt Truck GMC
LO - Lt Truck Oldsmobile
LP - Lt Truck Pontiac
M - Medium Truck
O - Oldsmobile
P - Pontiac
SB - Saab
SE - Saab Exchange
S - Saturn