GM Full-Size Trucks 1988-1998 Repair Information

Engine

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See Figures 1, 2, 3, 4 and 5

On the 4.8L, inline 6-cylinder engine, the engine identification number is found on a machined pad on the left side of the block, just rear of center, below the engine side cover.

On the 1988-92 4.3L V6 engine, the engine identification number is found on a machined pad on the block, at the front just below the right side cylinder head.

On the 1993-98 4.3L V6 engine, the engine identification number is found on a machined pad on the rear of the cylinder block, below and behind the left cylinder head where the engine mates with the bellhousing.

On V8 gasoline engines, the engine identification number is usually found on a machined pad on the block, at the front just below the right side cylinder head. The engine identification number is sometimes also found on a machined pad on the left, rear upper side of the block, where the engine mates with the bellhousing.

On V8 diesel engines, the engine identification number is found on a machined pad on the front of the block, between the left cylinder head and the thermostat housing, and/or on a machined pad on the left rear of the block, just behind the left cylinder head. The engine number is broken down as follows: Example-F1210TFA



F-Manufacturing Plant. F-Flint and T-Tonawanda
 
12-Month of Manufacture (December)
 
10-Day of Manufacturer (Tenth)
 
T-Truck engine
 
FA-Transmission and Engine Combination
 



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Fig. Fig.1: Engine identification number location-1988-92 4.3L engines



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Fig. Fig.2: Engine identification number location-1993-98 4.3L engines



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Fig. Fig.3: Engine identification number location-5.0L, 5.7L engines



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Fig. Fig.4: Engine identification number location-7.4L engines



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Fig. Fig.5: Engine identification number location-6.2L, 6.5L engines

 
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