[SteveRS]

Engines
Years Engine Power Torque
2004–2006 2.8 L (173 cu in) LK5 I4 175 hp (130 kW) 185 lb·ft (251 N·m)
2007–present 2.9 L (178 cu in) LLV I4 185 hp (138 kW) 190 lb·ft (258 N·m)[4]
2004–2006 3.5 L (214 cu in) L52 I5 220 hp (164 kW) 225 lb·ft (305 N·m)
2007–present 3.7 L (223 cu in) LLR I5 242 hp (180 kW) 242 lb·ft (328 N·m)[4]
2009–present 5.3 L (325 cu in) LH8 V8 300 hp (224 kW) 320 lb·ft (434 N·m)[5]