GM Service Manual Online
For 1990-2009 cars only

Powertrain Control Module (PCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Commanded GEN

IPC Data

On/Off

Off

Commanded Starter

Engine Data 1

Disabled/Enabled

Disabled

Ignition 1

IPC Data

Volts

12.6 Volts

Starter Enable Relay

Output Driver Data

OK/Fault

OK

VTD Fuel Disabled

Engine Data 1

Active/Inactive

Inactive