PM checklist
Used Semi-Truck Inspection Checklist
A used truck inspection checklist helps buyers organize questions before paying for a qualified inspection and reviewing maintenance records.
If this checklist creates repair items, record them in the maintenance log template and use the PM schedule generator to plan the next due mileage.
Printable Checklist
| Item | What to check | Why it matters | Notes |
|---|---|---|---|
| Maintenance records | Request PM invoices, repair logs, annual inspection records, tire records, DPF cleaning, and oil samples if available. | Missing records change purchase risk even when the truck looks clean. | Compare dates and odometer readings. |
| Engine condition | Look for blow-by clues, leaks, coolant contamination, smoke, abnormal noises, and oil pressure concerns. | Engine risk can dominate the purchase decision. | Use a qualified inspection. |
| Aftertreatment | Review derate history, DPF service, DEF system work, fault codes, and sensor replacements. | Aftertreatment repairs can be difficult to estimate from appearance. | Ask for scan reports. |
| ECM and road test | Request ECM report and test drive notes for faults, mileage, hours, idle time, shifting, braking, and temperatures. | Documents and behavior should agree. | Do not rely on dashboard mileage alone. |
| Frame and rust | Inspect frame rails, crossmembers, suspension mounts, fifth wheel mounts, cab structure, and corrosion repairs. | Structural issues can change the deal completely. | Photograph findings. |
How Often to Use This Checklist
Use before making an offer, before a deposit becomes difficult to recover, and again during paid inspection review.
Common Mistakes
- Checking boxes without writing mileage, unit number, defect notes, and follow-up status.
- Treating a visual walkaround as a qualified mechanical inspection.
- Skipping records for small defects that later become repeated repair issues.
- Filing paper logs where drivers, dispatch, and maintenance cannot retrieve them quickly.
Records to Keep
- Completed checklist with date, odometer, driver or inspector name, and unit number.
- Defect correction notes, invoices, parts receipts, and photos when useful.
- PM due mileage, next inspection target, and any out-of-service decision notes.
Use the print button to print the checklist or save it as a PDF from the browser.
Related resources
Sources and Methodology
- Federal Motor Carrier Safety Regulations, Part 393 - Equipment safety rules used as a reference point for inspection-sensitive systems such as brakes, lamps, coupling devices, and tires.
- Federal Motor Carrier Safety Regulations, Part 396 - Maintenance, inspection, repair, and recordkeeping requirements for motor carriers.
- Driver Vehicle Inspection Reports and Roadside Inspection Basics - Public FMCSA material used for inspection and recordkeeping context.