LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1871 (Immobilizer System) >> Diagnostic Information and Procedures >> DTC B302A >> Circuit/System Verification
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the OnStar system is not damaged and is functioning properly with no DTCs set.
    • If the OnStar system is damaged, inoperative, or any OnStar DTCs are set, these concerns must be corrected before the start disable can be removed.
  2. Press the blue OnStar button and ask the advisor to be transferred to the stolen vehicle team to verify the vehicle account has been updated.
  3. Very that OnStar is aware the vehicle has been recovered and that the vehicle account has been updated as such.
    • If OnStar has not been notified that the vehicle has been recovered, contact the customer and advise them that for security purposes, they must contact OnStar and the law enforcement agency to update the vehicle account.
  4. After the vehicle account has been updated and the start disable request has been removed, DTC B302A will transition to a history DTC. Clear the history DTC.
scientia non olet · About LEMON Manuals