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Cadillac TSB #GCUS-3-652
2016 Cadillac CTS
TSB Document:
Affected Component: ENGINE AND ENGINE COOLING
- Summary
- 43880 02 - Service Update Bulletin (Warranty Information section revised). On some vehicles equipped with a start/stop engine control option, the system level interactions related to the transition of run/crank and accessory inputs to the engine control module (ECM) during a crank event are compromised. This results in communication issues between the ECM and the intelligent battery sensor. The check engine light will illuminate and the stop/start system is suspended while the fault is active, resulting in degraded fuel economy.
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