GM Service Manual Online
For 1990-2009 cars only

PCM Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Engine Idling/Radiator Hose Hot/Closed Throttle/Park or Neutral/Closed Loop

A/C Relay Command

Eng 1, 2, Enhanced EVAP, Misfire

On/Off

Off

A/C High Side Pressure

Eng 2

Volts

Varies

A/C High Side Pressure

Eng 2

kPa/psi

Varies

A/C Request

Eng 1, 2, Enhanced EVAP, Misfire

Yes/No

No

A/C Status

Eng 1, 2, Enhanced EVAP, Misfire

On/Off

Off