GM Service Manual Online
For 1990-2009 cars only
Table 1: Heating, Ventilation and Air Conditioning (HVAC)
Table 2: Body Control Module (BCM)

Heating, Ventilation and Air Conditioning (HVAC)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON and Engine OFF/Doors, Hatch or Trunk, and Hood Closed/No Switches ON/Vehicle in Park or Neutral

Valet Switch

Data

Active/Inactive

Inactive

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON and Engine OFF/Doors, Hatch or Trunk, and Hood Closed/No Switches ON/Vehicle in Park or Neutral

Hatch/Trunk Release Switch

Data

Active/Inactive

Inactive

Hatch/Trunk Release Solenoid

Data

Active/Inactive

Inactive