August 1, 2016 Service bulletin

Service Update

Cadillac technical service bulletin GCUS-3-634 for 2016 Cadillac CTS.

Bulletin number: GCUS-3-634
Component: Electrical system: software
Summary: 49070 - Service Update. After the ignition is cycled to ?ON?, and during bulb check, the Lane Keep Assist (LKA) feature may set a short to ground fault and become unavailable for an ignition cycle. The failure is only noticeable to the driver when the feature does not function and the driver presses the switch. Upon doing so, ?Lane Keeping Assist Unavailable? will be displayed in the driver information center. Dealers are to reprogram the front camera module with new software.

Owners of these vehicles have filed 10 complaints in the electrical category.

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