Engine: Vortec 4.8L V8 SFI (Standard on SLE 3SA) (Click here for important details)
This 4.8L V8 engine delivers 295 hp at 5600 rpm and 305 lb.-ft. of torque at 4800 rpm.
Standard on 2WD models only. Not available on 4WD models.
Engine: Vortec 5.3L V8 SFI with Active Fuel Management (Standard on SLE 3SB and SLT models) (Click here for important details)
This 5.3L V8 engine delivers 320 hp at 5200 rpm and 340 lb.-ft. of torque at 4200 rpm. When driving conditions require less power, the Active Fuel Management system temporarily allows the 5.3L V8 engine to shift automatically from eight cylinders to four, resulting in impressive fuel economy gains.
Requires 2WD models, not available on 4WD models.
Engine: Vortec 5.3L V8 SFI Flex-Fuel with Active Fuel Management and 320 hp (Click here for important details)
The Vortec V8 Flex-Fuel engine standard in the GMC capable of running on up to 85 percent ethanol or unleaded fuels, the Vortec 5300 V8 SFI Flex-Fuel engine with Active Fuel Management delivers 320 hp at 5300 rpm and 340 lb.-ft. of torque at 4200 rpm. When driving conditions require less power, the Active Fuel Management system temporarily allows the 5.3L V8 engine to shift automatically from eight cylinders to four, resulting in impressive fuel economy gains.