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GM passenger car & light truck engine codes
30A
2008-1981 — 8th Digit of vehicle identification number indicates engine identification
1980-1976 — 5th Digit of vehicle identification number indicates engine identification
To convert liters into cubic inches, multiply by 61.0250
(Engine) (Engine)
Code Year Cyl. C.I.D. Carb. Remarks
T 2007-2006 V8 325 MFI 2.8 L, Cadillac
T 2004-1996 4 146 MFI 2.4 L, Buick, Chev., Olds., Pontiac
T 1998-1990 V6 189 EFI 3.1 L, Chev., Pontiac
T 1998-1989 V6 189 EFI 3.1 L, Buick
T 1998-1990, 1979-1978 V6 189 EFI 3.1 L, Olds.
T 1994-1993 V6 189 EFI 3.1 L, Pontiac
T 1985 V8 260 Diesel 4.3 L, Olds.
T 1985-1982 V6 260 EFI 4.3 L, Olds.
T 1979-1977 V8 301 4 4.9 L, Pontiac
T 1979-1976 V8 425 EFI 7.0 L, Cadillac
U 2007-1999 V8 366 6.0 L, Cadillac, Chev., Chev./GMC Trk., Pontiac
U 1990, 1986 4 151 EFI 2.5 L, Buick
U 1990-1985 4 151 EFI 2.5 L, Pontiac
U 1986-1983 V8 305 2 5.0 L, Chev.
V 2008 V6 217 DI 3.6 L, Cadillac
V 2007-1999 V8 292 4.8 L, Chev./GMC Trk.
V 1985-1982 V6 260 Diesel 4.3 L, Olds.
V 1980-1977 4 151 2 2.5 L, Pontiac
V 1977-1976 V8 350 2 5.7 L, Chev.
W 2008 V6 237 MFI 3.9 L, Chev. APV
W 2002-1992 V6 262 CPI 4.3 L, Chev./GMC Trk., HO
W 1999 V6 181 SFI 3.0 L, Cadillac
W 2004-1994 V8 265 EFI 4.3 L, Chev.
W 1993 V6 189 EFI 3.1 L, Chev.
W 1989 V6 173 EFI 2.8 L, Buick
W 1989-1985 V6 173 EFI 2.8 L, Chev.
W 1978 V8 301 4 4.9 L, Pontiac
X 2008-2003 V6 262 MFI 4.3 L, Chev/GMC Trk.
X 2003 V6 207 MFI 3.4 L, Chev., Olds.
X 1998-1996 V6 262 CPI 4.3 L, Chev./GMC Trk.
X 1998-1991, 1986 V6 207 EFI 3.4 L, Chev.
X 1998-1991, 1977-1976 V6 207 EFI 3.4 L, Olds., Pontiac
X 1986-1980 V6 173 2 2.8 L, Chev.
X 1979-1978 V8 350 4 5.7 L, Chev.
X 1976 V8 350 4 5.7 L, Buick
Y 2008-2007 V8 366 MFI 6.0 L, Chev./GMC Trk.
Y 2007-1993 V8 281 EFI 4.6 L, Buick, Cadillac
Y 2000-1994 V8 395 Diesel 6.5 L, Chev./GMC Trk.
Y 1991-1990, 1986-1985 V8 305 4 5.0 L, Cadillac
Y 1989 V8 305 4 5.0 L, Chev.
Z 2007-2002 V8 327 MFI 5.3 L, Chev/GMC Trk.
Z 2006-2003 L4 122 MFI 2.0 L, Cadillac, Chev.
Z 1993 V8 250 EFI 4.1 L, Cadillac
Z 1993 V6 262 EFI 4.3 L, Cadillac
Z 1993-1985 V6 262 EFI 4.3 L, Chev.
Z 1987 V6 173 EFI 2.8 L, Chev.
Z 1984-1981 V6 173 2 2.8 L, Chev.
Z 1979-1977 V8 400 4 6.6 L, Pontiac
0 2008-2007 V8 325 MFI 5.3 L, Chev./GMC Trk.
0 1986-1982 4 112 EFI 1.8 L, Pontiac (Brazil)
0 1979-1978 4 98 2 1.6 L, Chev.