A/C Low Pressure Switch: Removal
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect the electrical connector from the A/C low pressure switch. Remove the A/C low pressure switch from the accumulator. See Fig 1. Remove the O-ring and discard.