Buick Regal 2018-2025 Service Manual / HVAC & Restraints / Seat Belts / Diagnostic Information and Procedures
Buick Regal: Diagnostic Information and Procedures
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DTC B0072 or B0073
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
DTC B0075-B0077
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diag
Symptoms - Seat Belts
NOTE: Review the seat belt system description and operation in order to
familiarize yourself with the system and how it functions.
Visual/Physical Inspection
Inspect for aftermarket devices which co
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Electronic Ignition System Description
The electronic ignition system produces and controls a high-energy secondary
spark. This spark is used
to ignite the compressed air/fuel mixture at precisely the correct time. This
provides optimal
performance, fuel economy, and control of exhaust emissions. This ignition
system uses an individua
OnStar Description and Operation (UI3)
The Emergency Road Assistance Global Navigation Satellite System (ERA GLONASS)
consists of the
following components:
Telematics communication interface control module
Telematics two button assembly
Microphone
Cellular antenna
GPS antenna
Back up battery
Backup speaker
This system also inte
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