Vehicle Theft Deterrent (VTD) System Check. Buick Riviera 1999

For 1990-2009 cars only

Makes 🢒 Buick 🢒 1999 🢒 Riviera 🢒 Body and Accessories 🢒 Theft Deterrent 🢒 Vehicle Theft Deterrent (VTD) System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

Attempt to start the vehicle.

The engine cranks and starts.

Note the security indicator while attempting to start the vehicle.

The indicator comes on and goes off after approximately 5 seconds.

•	SECURITY Indicator Always On or Flashing

•	SECURITY Indicator Inoperative

•	SECURITY Indicator On, Engine Does Not Crank

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.