The engine code letter is the eight digit of the VIN, which identifies the engine.
Stick-on labels attached to the engine, laser etching, or stamping in the engine block indicate the engine unit number/build code date.
The Machine Marking Location (1) for the 2.2 L engine.
The primary (2) and secondary (3) hand stamp locations for the Vehicle Identification Number (VIN).
The 2.4 L VIN derivative and Engine ID (1) is located on the left side of the engine block next to the starter motor.