Air Conditioning (A/C) Diagnostics - Pressure Zone B
WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Air Conditioning (A/C) - Pressure Zone B Diagnostic (Steps 1-8)
Courtesy of GENERAL MOTORS CORP.
Fig 2: Air Conditioning (A/C) - Pressure Zone B Diagnostic (Steps 9-13)