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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 180 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> DTC P15A3: Stop/Start Select Switch Circuit Signal Message Counter Incorrect (KL9 with M3L) >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

The engine control module (ECM) receives the stop/start switch speed signal via serial data from the body control module (BCM).

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