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Cadillac
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1999
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DeVille Concours V8-4.6L VIN 9
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Relays and Modules - Computers and Control Systems
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Body Control Module
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Description and Operation
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Inadvertent Exterior Lamp Control
Inadvertent Exterior Lamp Control
The PZM automatically turns off the exterior lamps after
10 minutes
if the headlamp switch remains ON after the ignition cycles to the LOCK or ACC position.