Frame inspection above everything else
The frame is the structural foundation of the truck and the single item whose integrity matters most. Any truck being sold by a dealer should allow you to get under it with a flashlight before purchase. If the dealer refuses, shop elsewhere.
Look for: straight, continuous frame rails without repair welds; consistent paint or coating across the entire frame length; no visible rust beyond light surface oxidation; no dents or deformation in the rails.
Red flags: fresh weld beads anywhere on the frame (suggests accident repair), sections of frame with different coating than surrounding (suggests repaired section), significant rust flaking (structural concern in older trucks), bent or kinked rails (accident history that may not appear on Carfax).
