FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Cadillac
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2005
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XLR V8-4.6L VIN A
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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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Engine Control Module
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Description and Operation
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Throttle Actuator Control (Tac) System
Throttle Actuator Control (Tac) System
ENGINE CONTROL MODULE
The engine control module (ECM) determines the driver's intent and then calculates the appropriate throttle response.