2009 GMC C Series Topkick Engines
6.6 Liter OHV 32-Valve Duramax Turbo-Diesel V8
7.2 Liter Caterpillar C7 Turbo-Diesel Inline 6 Cylinder
7.8 Liter OHV 24-Valve Isuzu Turbo-Diesel Inline 6 Cylinder
8.1 Liter OHV 16-Valve Vortec V8
2009 GMC C Series Topkick Transmissions
10 Speed Eaton Manual
5 Speed Allison Automatic
6 Speed Allison Automatic
6 Speed Eaton Manual