GM Service Manual Online
For 1990-2009 cars only

Scan Tool Data List Non HP2

Powertrain Control Module (PCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Gasoline Engines Only

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%

Ignition ON/Engine OFF

6.6L LB7 Diesel

Ignition 1 Signal

Engine 2 Data

Volts

9-14 v