GM Service Manual Online
For 1990-2009 cars only

Engine Identification 2H0


Object Number: 1945826  Size: SH

Note: When a short block engine is installed, the engine number must be marked on the cylinder block before installing the engine.

The engine identification code is embossed on the flattened area of the cylinder block, arrow, at the transmission side.

Engine Identification LLU

Engine Number


Object Number: 2188655  Size: SH

The engine number is stamped on the engine block (1) at cylinder number 4 under the intake manifold.