8 Digit GM Part Number : The scan tool displays the part number for service identification.

A/C High Side Pressure : The scan tool displays -103 to +3119 kPa (-14 to +452 psi). This parameter represents the air conditioning (A/C) refrigerant pressure sensor voltage signal converted to pressure.

A/C High Side Pressure : The scan tool displays 0.00-5.00 Volts. This parameter represents the A/C refrigerant pressure sensor signal.

A/C Off For WOT : The scan tool displays Yes or No. Yes indicates that the powertrain control module (PCM) or engine control module (ECM) has disabled the A/C compressor because the TP sensor signal is at wide open throttle.

A/C Pressure Disable : The scan tool displays Yes or No. Yes indicates that the PCM/ECM has disabled the A/C compressor due to excessive refrigerant pressure.

A/C Relay Circuit Status : The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

A/C Relay Command : The scan tool displays On or Off. Represents the PCM/ECM commanded state of the A/C compressor clutch relay control circuit. The A/C compressor clutch should be engaged when Commanded A/C displays On.

A/C Request Signal : The scan tool displays Yes or No. The PCM/ECM uses the A/C request signal in order to determine if A/C compressor operation is being requested by the BCM.

A/C Switch : The scan tool displays Active or Inactive. Displays the state of the A/C request signal circuit from the HVAC control module to the BCM.

ECT Sensor : The scan tool range is -39°C to +140°C (-38°F to +284°F). Displays the temperature of the engine coolant.