Circuit/System Verification

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

Ignition - On / Vehicle - In Service Mode
Verify the component activates: Radio SpeakerThe balance and fade controls can be used to help isolate an inoperative speaker or poor sound condition.
- If the component does not activate
  Refer to: Speaker Malfunction .
- Go to next step: If all components operate
B153D Seat Belt Buckle - Driver & B153P Seat Belt Buckle - Passenger - Buckled
Verify the scan tool parameter: Driver Seat Belt Status & Passenger Seat Belt Status = Buckled
- If not the specified state
  Refer to: Seat Belt Indicator Malfunction - Driver .
- Go to next step: If the specified state
Headlamp Switch - Off
Verify the scan tool parameter: Headlamps On Switch = Inactive
- If not the specified state
  Refer to: Headlamps Malfunction
- Go to next step: If the specified state
Park Lamps Switch - Off
Verify the scan tool parameter: Park Lamps Switch = Inactive
- If not the specified state
  Refer to: Park, License, and/or Tail Lamps Malfunction
- Go to next step: If the specified state
Turn Signal Switch - Off
Verify the scan tool parameter: Left Turn Signal Switch & Right Turn Signal Switch = Inactive
- If not the specified state
  Refer to: Park, License, and/or Tail Lamps Malfunction
- Go to next step: If the specified state
Close the doors and verify that the luggage compartment is empty.
Verify the scan tool parameter: Driver Door Ajar Switch & Passenger Door Ajar Switch & Left Rear Door Ajar Switch & Right Rear Door Ajar Switch = Inactive
- If not the specified state
  Refer to: Door Ajar Indicator Malfunction
- Go to next step: If the specified state
All OK.