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Home >> Buick >> 2003 >> Century Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics - 3.1L Engine >> Self-Diagnostic System >> Powertrain Control Module Location
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Powertrain Control Module Location

On Century and Grand Prix, PCM is located left side of engine compartment, inside air cleaner assembly. See Figure. On Malibu, PCM is located under Instrument Panel (I/P), next to Data Link Connector (DLC). See Figure.