Removal & Installation

Disconnect negative battery cable. Discharge A/C system, using approved refrigerant recovery/recycling equipment. Remove compressor drive belt. Disconnect compressor inlet and outlet lines, and cap openings. Disconnect electrical connectors, as necessary. Remove compressor. See Fig 1 or Fig 2 .
To install, reverse removal procedure. If replacing compressor, drain and measure oil from old compressor. If less than 2 ounces are drained, add 2 ounces to new compressor. If more than 2 ounces are drained, add that amount to new compressor. Lubricate new "O" rings with clean refrigerant oil prior to installation. Evacuate, charge, and leak test A/C system.

Fig 1: A/C Compressor Mounting (5.7L Gasoline Engine; Others Similar)

Courtesy of GENERAL MOTORS CORP.

Fig 2: A/C Compressor Mounting (Diesel Engines)

Courtesy of GENERAL MOTORS CORP.