2.8L Duramax® Turbo-Diesel I-4 engine

  • 181 hp @ 3,400 rpm, 369 lb-ft of torque @ 2,000 rpm
  • Inline 4 cylinders with dual overhead camshafts
  • Direct injection
  • Requires WT Convenience Package and Trailering Package on WT models
  • Requires Safety Package, LT Convenience Package and Trailering Package on LT models
  • Requires Trailering Package on Z71® models