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Home >> Buick >> 1998 >> Century Custom >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Module >> Diagnostic Tests >> Performance Shift Switch Malfunction >> Description
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Performance Shift Switch Malfunction: Description

Performance shift switch allows driver to select performance shift mode of automatic transaxle. When performance shift switch is on, a ground signal is sent to BCM through circuit No. 1493 (Dark Blue wire). BCM will then send a class 2 message to IPC (to turn on PERF SHIFT indicator light) and to PCM.