S&T Series Blazer, Bravada, Envoy, Jimmy, Rainier, Trailblazer, Xtreme



The engine identification number is stamped either on a flat, machined surface, on the right-front of the engine block, just above the water pump, or on the left-rear side of the engine block, where the transmission is joined to the engine.

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Fig. Location of the engine identification number-4.3L engine shown