GM Service Manual Online
For 1990-2009 cars only
Table 1: Instrument Panel Cluster (IPC)
Table 2: Powertrain Control Module (PCM) 3.8 Liter L36
Table 3: Powertrain Control Module (PCM) 3.8 Liter L67

Instrument Panel Cluster (IPC)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Coolant Temperature

Data

Celsius (C) Fahrenheit (F)

87°C (189°F)

Coolant Hot Lamp

Inputs

ON/OFF

OFF

Powertrain Control Module (PCM) 3.8 Liter L36

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

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

Commanded Fan 1/Commanded Fan 2

Eng 2, Cat

On/Off

Off

ECT

Eng 1, 2, EGR, Cat, HO2S, Misfire, AIR

°C/°F

Varies

FC Relay 1

ODD

OK/Fault/Invalid State

OK

FC Relay 2 and 3

ODD

OK/Fault/Invalid State

OK

Powertrain Control Module (PCM) 3.8 Liter L67

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

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

Commanded Fan 1/Commanded Fan 2

Eng 2, Cat

On/Off

Off

ECT

Eng 1, 2, EGR, EVAP, Cat, HO2S, Misfire, AIR

°C/°F

Varies

FC Relay 1

ODD

OK/Fault/Invalid State

OK

FC Relay 2 and 3

ODD

OK/Fault/Invalid State

OK