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Home >> Chevrolet >> 2016 >> Express 2500 Base, Van Cargo Extended, 6.6L Eng VIN L >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> OnStar Call Center Remote Function Requests Malfunction >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2015 GMC Savana 3500, 2015 GMC Savana 2500, 2015 Chevrolet Express 3500, and 2015 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • It is necessary to inform the OnStar® Call Center advisor that this call is for vehicle diagnostic purposes.
  • It is necessary to have the vehicle in an open outside area where a cellular call can be successfully placed and GPS data can be received from satellites.
  1. Ignition ON.
  2. Verify that the horn, lights, and the door locks on the vehicle operate properly.
    • If all applicable vehicle systems operate properly 
  3. Verify that a call can be successfully placed to the OnStar Call Center by pressing the blue OnStar button.
    • If able to contact the OnStar Call Center 
  4. Verify with the OnStar advisor that all remote functions (door locks, lights, and horn) work.
    • If the remote functions do not operate when requested 

      Replace the K73 Telematics Communication Interface Control Module

    • If the remote functions operate when requested 
  5. All OK.
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