Auto Stop Inoperable After Repairs
Technicians may notice that the Stop/Start system is inoperable after a system repair or after any service where the 12-volt battery negative cable was disconnected. A DIC message will not be displayed and no DTCs will be set. To correct this, the learning procedure needs to be completed on the intelligent battery sensor (Battery Sensor Module). It will be necessary to park the vehicle for three hours — after the vehicle’s system sleep cycle — to allow the procedure to complete.

The Battery Sensor Module Battery State Information can be found in the ECM > Data Display > Stop/Start System Data. If the parameter reads “Available,” the learn procedure has been completed. If “Not Available” appears, the learning procedure is required to enable Stop/Start operation. 
Once the learn procedure has been completed, crank the engine to update the data display from “Not Available” to “Available.”

Accelerator Pedal Detent Provides Driver Feedback
2016-2017 Chevrolet Malibu, 2017 Buick LaCrosse and 2017 Cadillac XT5 (equipped with the eight-speed transmission, RPO MRC); 2015-2017 Cadillac Escalade, Chevrolet Silverado, GMC Sierra and GMC Yukon Denali models (equipped with the eight-speed automatic transmission, RPO M5U)

The accelerator pedal on these models features a detent approximately three-quarters of the way through pedal travel. As the accelerator pedal is applied, the built-in detent may be noticed by the driver with a feeling of increased resistance in the pedal.

The accelerator pedal design on these vehicles equipped with the eight-speed automatic transmission provides the operator with tactile feedback near the last quarter of pedal travel in order to help minimize transmission downshifting, allowing for improved fuel economy and smoother operation. Applying the accelerator pedal down to the detent will allow a more relaxed acceleration rate. When pressing the pedal through the detent, the transmission will downshift aggressively, enabling an increased acceleration rate.

Do not replace any parts for this condition. This is a normal operating characteristic of the vehicle.

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