| Table 1: | Powertrain Control Module (PCM) 6.6 Liter LB7 | 
| Table 2: | Powertrain Control Module (PCM) 7.8 Liter LG4 | 
| Table 3: | Powertrain Control Module (PCM) 8.1 Liter L18 | 
Scan Tool Parameter  | Data List  | Units Displayed  | Typical Data Value  | 
|---|---|---|---|
Ignition Switch in RUN/Engine running/Transmission in NEUTRAL/Air Conditioner is OFF  | |||
Low Coolant Level  | Engine Data 1  | Yes/No  | No  | 
ECT Sensor  | Engine Data 1 Fuel System  | °C/°F  | Varies  | 
Scan Tool Parameter  | Data List  | Units Displayed  | Typical Data Value  | 
|---|---|---|---|
Ignition Switch in RUN/Engine Running/Transmission in NEUTRAL/Air Conditioner is OFF  | |||
Coolant Level Switch  | Engine Data 2  | Yes/No  | No  | 
ECT Sensor  | Engine Data 1 Engine Data 2  | °C/°F  | Varies  | 
Scan Tool Parameter  | Data List  | Units Displayed  | Typical Data Value  | 
|---|---|---|---|
Ignition Switch in RUN/Engine running/Transmission in NEUTRAL/Air Conditioner is OFF  | |||
Coolant Level Switch  | Engine Data 2  | Yes/No  | No  | 
ECT Sensor  | Engine Data 1 Engine Data 2 EGR Data  | °C/°F  | Varies  | 
Reduced Engine Power  | Engine Data 1 Engine Data 2 EGR Data  | On/Off  | Off  |