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U.S. MODEL SHOWN

The Traction Select System on the Sierra AT4 allows the driver to choose from preset drive modes that have been tailored for different terrain or weather conditions. It adjusts Sierra’s transmission shift points, throttle mapping and StabiliTrak® to optimize performance for the situation. The available modes in the Traction Select System are:

  • Tour
  • Sport
  • Off-Road
  • Tow/Haul