Some owners of 2014-2016 Cadillac XTS vehicles may comment on a Service Power Steering message displayed on the DIC (driver information center) after a cold start. This condition may be intermittent. When checking for DTCs, the power steering control module may report C056D 3C, C0475 00 or the BCM may report a U0131 set as current or in history.

Some owners of 2016-2018 Cadillac XTS vehicles may comment about a MIL on that displays reduced engine power.

2014-2016 Cadillac CTS-V Sport and XTS vehicles equipped with an LF3 twin turbocharged engine may experience a rattle noise during cold startup and idle, with the noise coming from the turbocharger. 

Some owners of 2014-2016 Cadillac XTS vehicles equipped with belt drive electronic power steering may comment on a Service Power Steering message displayed on the driver information center (DIC) after a cold start.

This bulletin is for 2013-2019 Cadillac ATS, 2004-2019 CTS, 2004-2016 SRX, 2004-2011 STS and 2013-2019 XTS vehicles.

Some owners of 2016 Cadillac XTS vehicles may comment on a hard brake pedal on a cold start and/or a service brake assist message. 

Owners of 2014-2015 Cadillac CTS sedans, XTS or ATS vehicles equipped with a 3.6L twin turbo engine might comment on a brief rattle or tick when revving the engine when the transmission is in park or neutral.