GMC Sierra 3500 Hd

Inspect for Rust: Thoroughly check the frame, bed, and wheel wells, especially if buying from regions with harsh winters.

Service Records for Diesel: Demand comprehensive service history, particularly for the Duramax engine, including DPF/EGR maintenance.

Check Towing/Hauling Components: Inspect the hitch receiver, suspension, and brakes for signs of excessive wear if the truck was used for heavy work.

Test Drive Under Load (if possible): If buying used, try to test drive with some weight in the bed or a small trailer to assess performance.

Verify Trim Level & Options: Ensure the truck has the specific features (e.g., trailering package, 4x4, specific bed length) you need.

Professional Pre-Purchase Inspection: Always get a professional inspection, especially for a heavy-duty vehicle, to uncover hidden issues.