GM Service Manual Online
For 1990-2009 cars only
Table 1: Instrument Panel Cluster (IPC)
Table 2: Powertrain Control Module (PCM) 4.3 Liter LU3

Instrument Panel Cluster (IPC)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

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

Monitored Coolant Temp

Data

°C/°F

82°C to 93°C (180°F to 200°F)

Powertrain Control Module (PCM) 4.3 Liter LU3

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

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

ECT

Eng 1, 2, Fuel Trim, Misfire

°C/°F

Varies