Run Smart Predictive Cruise™

Predictive Cruise Control (PCC) is an optional fuel savings application that adjusts vehicle speed predictively, based on the approaching road. Using 3D digital map technology and GPS, PCC evaluates the upcoming road grade about a mile in advance to determine the most fuel-efficient vehicle speed. Vehicles equipped with PCC have a sticker on the dash. See  .

Fig. 5.23, Run Smart Predictive Cruise Control Sticker

The 3D digital map database contains profile information for over 200,000 highway miles (322,000 km) in the 48 contiguous United States. PCC will vary the set cruise speed by up to 6% depending on the approaching road grade. If the engine brake is enabled, PCC will automatically engage the engine brake when actual vehicle speed exceeds the cruise set speed by 6%. This is different from conventional cruise control, which maintains the speed set by the driver.

 WARNING

Apply the brakes and downshift as necessary when driving on downhill grades. PCC does not adequately control vehicle speed on steep downhill grades. Failure to use normal braking techniques when PCC is active could result in personal injury and vehicle damage.

IMPORTANT: PCC adjusts the vehicle set speed to achieve maximum fuel economy, but it does not account for traffic flows or surrounding vehicles.

Driver interaction with PCC is the same as conventional cruise control, using the standard cruise control buttons. In the event of a problem with PCC, or when driving on a road with no profile information available, the system reverts to conventional cruise control.