Buying a commercial box truck, step van, or utility truck is significantly different from buying a passenger vehicle. These trucks are driven hard by employees who don't own them.
Here is our professional checklist for inspecting a used commercial truck before handing over the check.
1. The Cargo Box Inspection
The box itself is often overlooked but is extremely expensive to repair.
Roof Leaks: This is the #1 issue. Go inside the box and close the door completely. Look for any pinholes of daylight coming through the roof. A leaking roof will destroy your cargo and rot the wooden floor.Corner Caps: Check the exterior aluminum or fiberglass corner caps for impact damage. Tree branches frequently hit these, breaking the waterproof seal.The Floor: Jump up and down on the wooden floor. Feel for soft spots or spongy areas, which indicate rot from water intrusion.2. The Roll-Up Door
A jammed roll-up door will halt your delivery routes.
Spring Tension: The door should slide up easily with one hand. If it feels extremely heavy, the counterbalance spring is failing.Rollers and Tracks: Ensure the tracks aren't bent and the rollers aren't grinding metal-on-metal.Cables: Inspect the lifting cables on both sides for fraying.3. Engine and Drivetrain
Commercial trucks endure immense abuse.
Cold Start: Always ask the seller not to warm up the truck before you arrive. A cold start will reveal hard-starting issues, worn glow plugs (on diesels), and excessive exhaust smoke.Transmission Shifts: Commercial trucks spend hours in stop-and-go city traffic. Drive the truck and ensure the transmission doesn't slip or slam into gears when shifting from 1st to 2nd under heavy acceleration.4. DOT Compliance Items
If the truck requires a DOT number, it must pass inspection.
Check the tire tread depth (steer tires must have 4/32 inch tread, drive tires 2/32 inch).Test all clearance lights, brake lights, and turn signals.Inspect the air brake system (if equipped) for rapid pressure loss.5. Utility Bed Specifics (For Service Trucks)
If you're buying a mechanic's truck or utility bed:
Check every single compartment door hinge and latch. They often rust shut or break.Test the PTO (Power Take-Off) if it has a crane or compressor attached. Ensure it engages smoothly without grinding.By following this checklist, you can weed out the abused fleet vehicles from the well-maintained ones, ensuring your new commercial truck is ready to generate revenue from day one.
