GM Service Manual Online
For 1990-2009 cars only

Powertrain Control Module (PCM) Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition Switch in RUN/Engine running/Automatic Transmission in PARK/Manual Transmission in NEUTRAL/Air Conditioner is OFF

ECT Sensor

Engine Data 1/Engine Data 2

Degrees

87°C (189°F)

ECT Sensor (6.5L)

Engine Data 1

Volts

2-3 Volts