WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Block - Left Side View
Courtesy of GENERAL MOTORS CORP.
Fig 2: Callouts For Engine Block - Left Side View (1-13)
Courtesy of GENERAL MOTORS CORP.
Fig 3: Callouts For Engine Block - Left Side View (14-29)