GM Service Manual Online
For 1990-2009 cars only

Radio/Integrated Radio Control (IRC)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF/Radio ON

Band Status

Radio Data 1

AM/FM1/FM2

FM1

Body Control Module (BCM) Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON / Vehicle is in Park or Neutral / Cruise On/Off is Turned Off

ACC Gap Switch

BCM

Inactive / Up / Down

Inactive

ACC Gap Switch

BCM

Volts

1.0 - 3.0 Volts Pressed