Engine, Vortec 4.8L V8 SFI FlexFuel (280 hp [208.8 kW] at 5200 rpm, 295 lb-ft of torque [398.3 N-m] at 4600 rpm) (Includes external engine oil cooler. Standard on CG23405, CG23705, CG33405 and CG33705 models. Reference the Engine/Axle page for availability.)
Rear axle, 3.42 ratio (Standard on CG13405, CH13405, CG23405, CG23705, CG33405 and CG33705 models. Required with (LU3) Vortec 4.3L V6 MFI engine, (L20) Vortec 4.8L V8 SFI FlexFuel engine, (L96) Vortec 6.0L V8 SFI FlexFuel or (LC8) Gaseous 6.0L V8 SFI engine. Available with (LMF) Vortec 5.3L V8 SFI FlexFuel engine. Reference the Engine/Axle page for availability.)
Body, standard
Transmission oil cooler, external (Included and only available with (L20) Vortec 4.8L V8 SFI FlexFuel engine or (L96) Vortec 6.0L V8 SFI FlexFuel engine.)