Firebird V8-5.7L VIN G (2001)
Powertrain Control Module: Description and Operation
General Information
The Powertrain Control Module (PCM) is designed to maintain exhaust emission levels while maintaining excellent driveability and fuel efficiency. The
PCM controls the following operations:
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The fuel control
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The Ignition Control (IC)
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The Knock Sensor (KS) system
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The automatic transmission shift functions
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The manual transmission 1-4 Upshift and Reverse Inhibit
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The cruise control enable, if the vehicle has this equipment
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The generator
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The Evaporative Emission (EVAP) purge
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The A/C clutch control
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The cooling fan control
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The Secondary Air Injection (AIR)
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The Exhaust Gas Recirculation (EGR)
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The on-board diagnostics for the powertrain functions
