If you’re shopping for a medium-duty workhorse and keep seeing the 2009 Chevrolet C6500 with a 13’6″ box pop up, you’re not alone. This truck blends commercial toughness with a cab-and-chassis platform that contractors, delivery services, and small fleets have leaned on for years. Below, I’ll walk you through everything — specs, real-world pros and cons, maintenance traps, and how to buy one used without getting burned. Let’s jump in.
Quick Overview: What Is the C6500?
The Chevrolet C6500 (also sold as the GMC C6500/Kodiak) is a medium-duty cab-and-chassis truck produced during the 2000s. Built to carry heavier payloads than pickup-based work trucks but remain more maneuverable than big semis, the C6500 is commonly found with box bodies, service bodies, and specialty builds. If you need a reliable 13’6″ cargo box on a GM platform, this truck is a classic candidate.
Where the C6500 Fits in Chevy’s Lineup
Think of the C6500 as the “middle child” between light-duty pickups (Silverado 2500/3500) and full Class 8 semis. It’s aimed at businesses that need more capacity than a cutaway van but still want simpler operation and lower operating cost than heavy haulers.
Who Should Consider This Truck?
Small-to-medium fleets, moving companies with regional routes, rental operators, and contractors who need a robust bed (13’6″ box) but don’t want a full commercial tractor. It’s also a popular choice for conversions — food trucks, mobile workshops, and event rigs.
Key Specifications (Chassis, Engines, and Dimensions)
Below are the specs that matter most when assessing a 2009 C6500 with a 13’6″ box. Exact numbers will vary by original configuration and upfit; always verify the placard on the vehicle and the build sheet.
Engine Options — Diesel and Gas
The third-generation Kodiak/C6500 offered several engine choices during this era, including GM’s 6.6L Duramax diesel V8, Caterpillar inline diesels (7.2L C7), and gasoline V8S (8.1L). The 6.6L Duramax is common and prized for torque and longevity, while Cat engines are known for heavy-duty torque but can be more expensive to maintain. (Source: Chevrolet Kodiak overview.)
6.6L Duramax notes
If the truck has the 6.6L Duramax LMM (common in 2007.5–2010 GM trucks), be aware of EGR cooler, injector, and turbocharger issues typical to that generation — manageable with maintenance, but worth inspecting on a used truck.
Caterpillar / Isuzu / Gas choices
Some chassis were ordered with different diesel engines (Caterpillar C7, Isuzu motors), depending on dealer options and OEM upfits. Gasoline 8.1L options exist too — cheaper upfront but less efficient for heavy-duty continuous hauling.
GVWR, Wheelbase and Box Dimensions (13’6 cargo box)
The C6500 sits in the medium-duty category (Class 6/7, depending on configuration) with GVWRs typically in the 19,500–26,000 lb range, depending on spec and axle choices. A 13’6″ box is a common vocational length for urban deliveries — long enough for standard pallet loads but short enough for city driving and parking. Official upfitter spec sheets for 2009 GM medium-duty trucks provide exact PTO and chassis specs for electricians or box installers.
Performance & Driving Impressions
On-road Handling and Comfort
Expect a commercial-cab feel: upright seating, basic creature comforts (AC, AM/FM), and a steering/ride tuned for load-carrying, not corner-carving. The cab is durable and simple to maintain — the tradeoff is less refinement than a modern van.
Towing and Payload Capabilities
With the right rear axle and suspension, payloads are significant (several thousand pounds), and towing is possible but usually limited by chassis rating. Use the truck’s VIN plate to determine exact capacities — don’t guess.
Common Issues and Maintenance Checklist
When buying used, know where money is usually spent.
Engine-related issues (Duramax LMM era)
The LMM Duramax (2007.5–2010) can suffer from EGR cooler clogging/leaks, injector failures, and turbo wear — problems typical to many diesels of that period. Regular oil changes, coolant maintenance, and scan-tool checks can prevent surprises.
Transmission, brakes, and electrical
Automatic transmissions in medium-duty GM trucks are robust but expensive if neglected. Air brake systems (if equipped) require inspection for leaks and compressor health. Electrical gremlins tend to pop up in high-mileage fleet trucks — look for clean connector servicing history.
Rust, frame, and body concerns
Box trucks often see heavy use and exposure to salt if used in northern climates. Check frame rails under the box, suspension hangers, and box-floor seams for rot and corrosion.
Routine maintenance schedule
- Frequent oil and filter changes (diesel: 5k–10k miles depending on oil and load).
- Fuel filter and water separator replacements.
- Coolant system flushes and EGR cooler inspections.
- Brake checks and suspension bushing inspection.
Upfitting & Customization (making the 13’6 box work for you)
A 13’6″ box is versatile — and where a lot of the truck’s long-term value is determined.
Cargo box types and liftgates
Common box types: dry freight, refrigerated, or service bodies. Liftgates are a must for many operations — check rated capacity and condition. For rental or delivery use, consider a walk-ramp or tuck-under lift.
Shelving, HVAC, refrigeration and tie-downs
Plan the interior layout before you buy: shelving, E-track, securement rings, and lighting all affect utility. Refrigerated conversions require checks on insulation, refrigeration unit hours, and compressor condition.
Fuel Economy & Operating Costs
Diesel VS Gasoline: Real-World Considerations
Diesel typically offers better fuel economy and torque for heavy loads, but costs more per gallon in some regions and can bring higher diesel maintenance costs (injectors, DEF systems on newer models). Gas engines are cheaper to maintain, but can struggle under heavy, repeated loads.
Insurance, registration & CDL notes
Depending on GVWR and local law, a commercial driver’s license (CDL) may be required. Insurance for medium-duty trucks is higher than for pickups — shop specialty commercial insurers.
Buying Used: What to Inspect (Pre-purchase Checklist)
VIN, service history and title
Ask for full service records and the original build sheet if possible. Look for salvage titles, former rental/lease use (which is common), and heavy modifications.
Test drive checklist
- Listen for abnormal engine noises under load.
- Check for smoke on acceleration (white/blue/black).
- Verify shifting smoothness and brake performance.
- Test all PTOs, liftgates, and electrical aux circuits.
Where to source parts and service
GM dealers, Diesel specialty shops, and independent upfitters will support the C6500. Online parts marketplaces and salvage yards also carry common components. Auction sites and commercial truck trader listings are good places to see market examples.
Pricing & Market Value (used 2009 C6500)
Used prices vary widely by mileage, condition, upfit, and region. Auction platforms and commercial truck marketplaces show C6500 box trucks often priced from low thousands (project trucks) up to mid/high-five figures for low-hour, well-maintained units. Expect depreciation if the box or chassis shows heavy wear. Use multiple listings to triangulate fair value. (See auction and commercial truck listings for real examples.)
Best Use Cases: Which businesses benefit most
Local delivery & last-mile logistics
The 13’6″ box hits a sweet spot for parcels, furniture, and regional deliveries where urban access matters.
Contractor fleets, events, and rentals
Service bodies and box trucks both work well for electricians, landscapers, mobile shops, and rental fleets. The rugged C6500 platform handles heavy tools and frequent stop-start duty.
Alternatives to Consider (similar medium-duty trucks)
If you want options, look at:
- Ford F-650/F-750 (similar class and capabilities).
- Isuzu NPR/NQR (smaller medium-duty options, often better fuel economy for some payloads).
- International TerraStar or Durastar models (comparable GVWRs and vocational possibilities).
Each has its pros/cons on parts availability, fuel economy, and total cost of ownership.
Final Recommendation & Buying Strategy
If you value a proven chassis with multiple engine choices and a widely available aftermarket and parts network, a well-maintained 2009 C6500 with a 13’6″ box can be a solid, cost-effective tool for small fleets or independent operators. Key buying tips:
- Prioritize service history and clean titles.
- Verify the exact engine model (Duramax LMM vs older engines) and inspect known weak points (EGR cooler, injectors).
- Factor in upfit condition — a tired box can cost more than a mechanical repair.
- Shop auctions and dealer inventories to compare pricing and options.
Conclusion
The 2009 Chevrolet C6500 box truck 13’6 is a flexible, medium-duty platform that remains relevant for businesses needing a durable cargo truck without jumping to full tractor-trailer complexity. With multiple engine options (notably the 6.6L Duramax) and a GVWR family that supports serious payloads, it’s a practical choice when properly maintained. Do your homework: check engine type, service records, and box condition; then you can get years of dependable service from this tried-and-true workhorse.
FAQs
A1: If you want a balance of torque and widespread service support, the 6.6L Duramax is a popular choice. Caterpillar C7 engines have excellent torque but may cost more to service depending on local shops. Check maintenance history and the existing service network where you operate.
A2: It depends on GVWR and local regulations. Many C6500 configurations fall into weight classes that could require a commercial license — always verify by VIN plate and local DMV rules.
A3: Yes — GM medium-duty parts, Duramax components, and common chassis items are still widely available through dealers, aftermarket suppliers, and salvage/auction channels.
A4: Diesel injectors/turbo issues (for LMM Duramax), major transmission repairs if neglected, and rust/frame repairs for trucks used in salty climates are typical higher-cost items.
A5: Compare commercial truck marketplaces, specialized dealers, and auctions. Platforms that list medium-duty trucks (commercialtrucktrader, PurpleWave auctions, Proxibid) give a realistic sense of current market pricing and available upfits.
