Operation CHARM
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1998
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Riviera V6-3.8L SC VIN 1
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Repair and Diagnosis
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Accessories and Optional Equipment
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Antitheft and Alarm Systems
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Description and Operation
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Universal Theft Deterrent (UTD) System Operation
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Security Indicator Operation
Security Indicator Operation
The RFA illuminates the SECURITY indicator located in the instrument cluster (Buick) or remote indicator bank (Oldsmobile) by grounding circuit 264 (DK GRN).