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Home >> Chevrolet >> 2016 >> Suburban 3500 HD LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 65 (Cellular System, Entertainment System, And Navigation System - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> OnStar Call Center Remote Function Requests Malfunction >> Circuit/System Verification

Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2015 GMC Yukon XL, 2015 GMC Yukon, 2015 Chevrolet Tahoe, 2015 Chevrolet Suburban, and 2015 Cadillac Escalade ESV. 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/vehicle in Service Mode.
  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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