Aug 27, 2026

Shopping for a used truck can feel overwhelming, especially when there are so many options and you’re not sure what to look for in a used truck. Knowing what to look for before you start shopping can save you time, money, and a lot of frustration. Whether you need a truck for daily driving around Idaho Falls, hauling further across Idaho, or for off-road weekend adventures, this guide will help you make a confident, informed decision. 

Check the Truck’s History and Mileage 

One of the first things to look in a used truck is its history. Any trustworthy dealership or seller will provide it without hesitation. Request a vehicle history report to check for past accidents—minor scrapes and cosmetic accidents are nothing next to severe collisions. Flood damage and title issues are a couple more things to check. Mileage matters, too, but it’s not the whole story. A well-maintained truck with higher mileage can sometimes be a better investment than a low-mileage truck that hasn’t been properly cared for. Records of regular oil changes, tire rotations, and other routine maintenance are a big plus, because that kind of attention to detail and consistent service history is a strong sign that the previous owner took the truck seriously. 

Inspect the Exterior and Frame 

It’s smart to know how you’re going to use your truck—but it’s smart to know how the previous owner did, too. If you want a towing machine, but the former owner used it for off-roading, it will possibly show different wear and damage than you might expect. Walk around the truck carefully and look for uneven panel gaps, mismatched paint, or rust. Minor surface rust may not be a dealbreaker, but frame rust can be a serious structural concern. Check the bed for dents, cracks, and signs of heavy use that might indicate the truck was worked hard without proper upkeep.Don’t forget to look underneath the vehicle. Rust, leaks, or damaged components beneath the truck are things a used truck buyer should never overlook. 

Evaluate the Engine and Drivetrain 

When thinking about what to look for in a used truck, the engine and drivetrain are critical. Pop the hood and look for any signs of oil leaks, worn belts, or corrosion on the battery terminals. Start the engine and listen for knocking, ticking, or rough idling, which can all indicate deeper mechanical problems. Test the 4-wheel drive system if it has one. That means making sure it shifts smoothly into all of its drive modes. A drivetrain issue can be costly to repair, so it’s worth taking the time to verify everything works as expected. 

Test Drive and Technology Features 

A test drive is non-negotiable when evaluating a used truck. Pay attention to how it accelerates, brakes, and handles at various speeds. Notice if it pulls to one side, if it gives off unusual vibrations, makes grinding sounds, or gives you a delayed steering response. Pay attention not just when driving straight, but turning too. These signs can all point to alignment, suspension, or brake issues and it’s best to take your time. 

Also take stock of the cab’s technology. Many used GMC trucks, including Sierra models that drivers throughout Idaho Falls, ID, have trusted for years, come equipped with features like a touchscreen infotainment system, Wi-Fi® hotspot capability, and driver assistance technology. Confirm that all screens, buttons, and connectivity features are functioning properly before making a decision. It doesn’t hurt to learn what these features are supposed to do before your visit. 

Get a Pre-Purchase Inspection 

Even if a used truck looks and drives great, having it inspected by a certified technician before you buy is one of the smartest steps you can take. A professional inspection can reveal issues that aren’t visible to the naked eye, from worn brake pads to transmission concerns. Knowing what to look for in a used truck is only half the equation. A trusted service team gives you the peace of mind that your next vehicle is in solid condition before  you sign anything. 

Find Your Next Used Truck at Wackerli Auto Center 

Whether you’re just starting your search or you’ve already done your research, the team at Wackerli Auto Center in Idaho Falls, Idaho is here to help. Our team can answer your questions and help you understand what to look for in a used truck to find your perfect match.