GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2002 🢒 Envoy - 2WD 🢒 Engine 🢒 Engine Cooling 🢒 Scan Tool Data List
Table 1: Powertrain Control Module (PCM) 4.2L (LL8)
Table 2: Instrument Panel Cluster

Powertrain Control Module (PCM) 4.2L (LL8)

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

Desired Fan Speed

ENG 2, ENG 3

RPM

Varies

ECT Sensor

ENG 1, ENG 2, ENG 3, EVAP, Misfire, HO2S

°C/°F

Varies

Fan Speed

ENG 2, ENG 3

RPM

Varies

IAT Sensor

ENG 1, ENG 2, ENG 3, EVAP, Misfire, HO2S

°C/°F

Varies

Instrument Panel Cluster

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

Displayed Coolant Temp

Data 1

°C/°F

Varies

Monitored Coolant Temp

Data 1

°C/°F

Varies