Detailed item info Model OverviewThe 2500 and 3500 have a standard 6. 0-liter V8 engine. though a 6. 6-liter turbo-diesel V8 is available. All Silverados come with a heavy-duty 6-speed automatic transmission. The 2500 and 3500 can be had as either a regular. extended or crew cab. with a standard or long bed. and two- or 4-wheel drive. Dual rear wheels are available on some models. There are several trim levels. depending on which basic set up is selected. including WT. LT and LTZ. The standard engine is a 6. 0L V8 engine that is capable of 360 horsepower and 380 pound-feet of torque. A 6. 6L turbo-diesel engine capable of 365 horsepower and 660 pound-feet of torque is also available. With the diesel engine. the trucks are capable of towing 13. 00 lbs. Some features cross all Silverado lines. such as driver and passenger air bags. 4-wheel disc brakes with anti-lock brakes and tire pressure monitoring. GM's OnStar system is standard on the LT trim and better. It includes crash response. roadside assistance and remote door unlock services. There are two suspension packages available for the 2500: the Z85 handling and trailering suspension and the Z71 off-road package. which adds high-performance shocks and a bigger stabilizer bar. Whether equipment is available or standard depends on which truck you're looking at. Pretty much anything you'd want in a pickup is available on a Silverado -- power everything. remote keyless entry. heated mirrors. privacy glass. bed liner. front tow hooks and chrome or aluminum wheels. Navigation is available as is rear-seat entertainment for the crew cab models. Heated power seats are available. as is cruise control. sunroof and a rear window defogger. High-tech touches such as a rearview camera and rear parking assist are optional. too. and would probably come in handy on a big truck like the Silverado. MP3-compatible stereo with XM satellite radio can be found on some models and a Bose system with USB interface is available.