GM Service Manual Online
For 1990-2009 cars only

Scan Tool Data List W/O HP2

Powertrain Control Module (PCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Ignition 1 Signal

Engine 1, 2 Data

Volts

9-14 V

GEN L--Terminal Signal Command

Engine 2 Data

On/OFF

On

GEN F--Terminal Signal

Engine 2 Data

%

10-90%

PCM - Diesel Engines

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

6.6L LB7 Diesel

Ignition 1 Signal

Engine 2 Data

Volts

9-14 V

Scan Tool Data List W/HP2

Hybrid Control Module (HCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine Running

Desired Accessory Power

HCM Data Display

Volts

9-14 v

Aux. Power Outlets

HCM Data Display

Normal/Continuous

Normal/Continuous

Aux. Power Outlets Target Idle Speed

HCM Data Display

RPM

500-1750

Aux. Coolant Pump Relay

HCM Data Display

On/Off

On

Aux. Trans Pump Relay

HCM Data Display

On/Off

On

Power Maintain Relay

HCM Data Display

On/Off

ON

Aux. Power Outlets Switch

HCM Data Display

On/Off

On

Acc. Power Module DC/DC Direction

HCM Data Display

14v-42v

42v-14v

14v-14v

Ignition 1

HCM Data Display

On/Off

On

Hood Switch Status

HCM Data Display

Open/Closed

Closed

Acc. Power Load

HCM Data Display

On/Off

On

Battery Pack Status Discharge

HCM Data Display

On/Off

On

Battery Pack IEO Discharge Time

HCM Data Display

On/Off

On

Battery Pack State of Charge Status

HCM Data Display

On/Off

On

Battery Pack Voltage Status

HCM Data Display

On/Off

On

Accelerator Pedal Position Status

HCM Data Display

On/Off

On

ATC Status

HCM Data Display

On/Off

On

Brake Switch Status

HCM Data Display

On/Off

On

ECT Status

HCM Data Display

On/Off

On

Engine Run Time Status

HCM Data Display

On/Off

On

Engine Speed Status

HCM Data Display

On/Off

On

Aux. Power Outlet Load Status

HCM Data Display

On/Off

On

Aux. Power Outlets Status

HCM Data Display

On/Off

On

Hood Switch Status

HCM Data Display

On/Off

On

HVAC Status

HCM Data Display

On/Off

On

Min. Gear State Status

HCM Data Display

On/Off

On

Min. IEO Status

HCM Data Display

On/Off

On

PCM Status

HCM Data Display

On/Off

On

TR Switch Status

HCM Data Display

On/Off

On

System Operation Status

HCM Data Display

On/Off

On

TFT Status

HCM Data Display

On/Off

On

Door Status

HCM Data Display

Open/Closed

Closed

Vehicle Acceleration (Inertia Status)

HCM Data Display

Yes/No

No

Vehicle Speed Status

HCM Data Display

Yes/No

Yes

Ignition 1 Status

HCM Data Display

On/Off

On

Tow/Haul Mode

HCM Data Display

Active/Inactive

Active

Energy Storage Control Module (ESCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine Running

Battery Pack Capacity

ESCM Data Display

Ahrs (Amp Hours)

55 Ahrs

Battery Pack Min. State of Charge

ESCM Data Display

%

45%

Battery Pack State of Charge

ESCM Data Display

%

55%

Battery Pack Fan Speed

ESCM Data Display

%

50%

Battery Pack Volts

ESCM Data Display

Volts

36v

Battery Pack Current

ESCM Data Display

Amps

Varying

Battery Pack Ahrs. Discharged

ESCM Data Display

Ahrs.

360 Ahrs

Battery Pack Ahrs. Charge

ESCM Data Display

Ahrs.

377 Ahrs

Battery Pack Disconnect Status

ESCM Data Display

Open/Closed

Closed

Battery Pack Service Charge

ESCM Data Display

Complete/Incomplete

Complete

Battery 1 Volts

ESCM Data Display

Volts

12.5v

Battery 2 Volts

ESCM Data Display

Volts

12.5v

Battery 3 Volts

ESCM Data Display

Volts

12.5v

Battery 1 Temp.

ESCM Data Display

°F

77

Battery 2 Temp.

ESCM Data Display

°F

77

Battery 3 Temp.

ESCM Data Display

°F

77

Starter/Generator Control Module (SGCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine Running

Auxiliary Power Outlet (APO) Output Voltage Phase A

SGCM Data Display

Volts

120v

APO Mode

SGCM Data Display

Normal/Continuous

Normal

Accessory Power Module (APM) Output Voltage

SGCM Data Display

Volts

13.7v

APM Power

SGCM Data Display

kW

-2.0-2.5 kW

SGCM Temperature

SGCM Data Display

°

-40-140°C

SGCM Fan Speed

SGCM Data Display

%

Varying

SGCM Pump Status

SGCM Data Display

On/Off

Off

SGCM Speed Signal

SGCM Data Display

On/Off

On

SGCM Bus Voltage

SGCM Data Display

Volts

42v

Delivered Starter/Generator Torque

SGCM Data Display

ft-lbs.

Varying - during key crank