Hazard Lights Fail To Flash With Alarm Tripped

Turn on hazard lights. If hazard lights function correctly, replace Body Control Module (BCM). See BODY CONTROL MODULE  under REMOVAL & INSTALLATION. Perform VEHICLE THEFT SECURITY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS. If hazard lights do not function correctly, check for related BCM DTCs. Repair as needed. If no related DTCs are present, see EXTERIOR LIGHTS article. Perform VEHICLE THEFT SECURITY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS.