Engine ID and VIN Derivative Location
WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
The primary vehicle identification number (VIN) derivative for the 3800 - L26 and 3800 - L32 is stamped or laser etched on the left side of the engine block above the starter motor (1).
The secondary vehicle identification number (VIN) derivative for the 3800 - L26 and 3800 - L32 is stamped or laser etched below the water pump on the engine block (1).