Chevrolet Silverado 2500HD 2003–2007 car dimensions: 6027 mm long, 2024 mm wide and 1956 mm high. Unladen weight is 2,547 kg. Braked towing is 5,443 kg.
The Crew Cab seats up to six with dual-zone climate control standard across models and automatic dual-zone on higher trims. Cruise control is standard on LS and LT grades. No parking sensors, reversing camera, or other electronic driver aids appear in the equipment lists for this generation.
The short box measures 6.5 feet and holds 57 cubic feet of cargo.
Properly equipped 2500HD Crew Cab Short Box models tow up to 12,000 pounds with the 8.1L gas or Duramax diesel engines and weight-distributing hitch. Payload reaches about 3,300 pounds depending on drivetrain and options.
Heavy-duty cooling is included to support maximum trailering ratings. The rear uses two-stage multi-leaf springs as reinforced suspension for work loads.
The cabin offers dual-zone climate control as standard across models for individualized front temperatures. Higher LT trims bring leather-trimmed 10-way power heated front bucket seats with power lumbar and memory, plus a center console. Crew Cab versions give full rear doors and split-bench seating with good head and leg room. Tilt steering and available Bose audio round out the basic comfort setup.
Fuel tank holds 26 gallons on short box or 34 gallons on long box models.
Standard four-wheel ABS disc brakes and dual front air bags with passenger sensing system.
Daytime running lamps and child seat anchors standard.
Basic warranty covers 3 years or 36,000 miles.
NHTSA frontal passenger rating 3 stars. rollover 4 stars on tested models.
Heavy-duty models carry no EPA fuel economy ratings. Available engines include the standard 6.0L gas V8, optional 8.1L gas V8, or 6.6L Duramax diesel. Tank size depends on bed length, with short-box Crew Cabs using the smaller capacity.
Follow the owner's manual schedule for oil changes based on the oil-life monitor or fixed intervals starting at 7,500 miles for tire rotation and fluid checks. Axle fluid and filters need attention at higher mileages. Allison automatic transmissions require specific filter service under severe use.
Safety equipment centers on four-wheel ABS, dual-stage front air bags with passenger sensing, and daytime running lights. Child seat anchors come standard. Crash ratings remain incomplete for many HD configurations, with available NHTSA data showing mixed frontal results and a 4-star rollover score.
Keep the truck by sticking to regular chassis lubrication, brake inspections, and corrosion checks on the galvanized body panels. The hydroformed frame and heavy-duty components support long-term work use when fluids and filters stay current.
Length 6027 mm, Width 2024 mm, Height 1956 mm, Wheelbase 3886 mm (Silverado 2500HD 2003–2007)
Sources: manufacturer data, 2003 GM Silverado/Sierra HD product specifications, The 2005 Chevrolet HD weights table publishes C25743HD base curb weight as 5614 lb, 2004 Chevrolet Silverado HD specification sheet 04CHESHDSPE01: Vortec 6000.