Engine, 2.5L 4-cylinder SIDI, DOHC with Variable Valve Timing (VVT) with Stop/Start (193 hp [143 kW] at 6300 rpm, 188 lb-ft of torque [255 N-m] at 4400 rpm)
Engine, 4.3L FlexFuel EcoTec3 V6 with Active Fuel Management, Direct Injection and Variable Valve Timing includes aluminum block construction with (FHS) E85 FlexFuel capability, capable of running on unleaded or up to 85% ethanol (285 hp [212 kW] at 5300 rpm, 305 lb-ft of torque [413 Nm] at 3900 rpm) (Includes (FHS) E85 FlexFuel capability. Not available on C*15743 models.)
Rear axle, 3.23 ratio (Standard and only available on (LV3) 4.3L EcoTec3 V6 engine with 2WD models.)
Pickup box
GVWR, 6900 lbs. (3130 kg) (Crew Cab and Double Cab requires 2WD models and (LV3) 4.3L EcoTec3 V6 engine.)
Trailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch Guidance
Rear axle, 3.23 ratio (Not available with (NHT) Max Trailering Package.)
Pickup bed
GVWR, 7100 lbs. (3221 kg) (Requires Crew Cab 4WD model with (L84) 5.3L EcoTec3 V8 engine or (L87) 6.2L EcoTec3 V8 engine without (NHT) Max Trailering Package. Requires Crew Cab 2WD model with (L84) 5.3L EcoTec3 V8 engine and (NHT) Max Trailering Package. Requires Crew Cab 2WD model and (LZ0) Duramax 3.0L Turbo-Diesel I6 engine and (NHT) Max Trailering Package.)