At Keller Used Cars, we know that the San Joaquin Valley runs on the back of a Chevrolet Silverado. Whether you’re hauling equipment to a job site in Armona, navigating the dusty backroads of Kings County, or making the commute down Highway 198 to Visalia, you need a truck that won’t quit when the odometer climbs.
A used Silverado 1500 with over 100,000 miles can be a fantastic investment—if you know what to look for. In Hanford, our "Central Valley tough" driving conditions (think triple-digit summer heat and dense winter Tule fog) mean certain components wear faster than others.
Here is our expert guide on what to inspect before you drive your next high-mileage Silverado home.
1. Listen for the "Silverado Tick" (AFM/DFM Lifters)
The most common point of discussion for 2014–2021 Silverado 1500s with the 5.3L or 6.2L V8 is the Active Fuel Management (AFM) system.
- What to look for: On your test drive around Lacey Boulevard, turn off the radio and listen for a persistent rhythmic ticking or knocking from the engine bay.
- Why it matters: In certain model years, the Active Fuel Management (AFM) lifters can experience wear. According to reliability data from RepairPal, while the Silverado ranks highly for overall dependability, keeping an ear out for engine noise is a key part of any high-mileage inspection.
2. Check the Transmission Fluid & Shift Quality
High-mileage trucks in Hanford often spend their lives towing in the heat. Heat is the enemy of the Silverado's 6-speed and 8-speed transmissions.
- What to look for: During your test drive, feel for "shuddering" or "hunting" for gears between 25 and 45 mph. Check the transmission fluid; it should be translucent red, not dark or smelling "burnt."
- The Hanford Factor: If the truck was used for heavy agricultural hauling near Lemoore or Corcoran, the transmission has worked twice as hard. We ensure all our high-mileage units have had their transmission coolers and fluids vetted.
3. Inspect for "Valley Dust" and Air Intake Health
Our dry, dusty climate in the Central Valley means air filters and sensors can get clogged faster than in other regions.
- What to look for: Check the air filter housing for excessive fine silt. A dirty Mass Air Flow (MAF) sensor can cause poor fuel economy and rough idling—two things you definitely don’t want when gas prices are up.
- Pro Tip: Ask for the service records to see if the Spark Plugs and PCV valves were replaced around the 100k-mile mark.
4. Cooling System Integrity
Hanford summers regularly top 100°F. A high-mileage Silverado’s cooling system is its lifeline.
- What to look for: Look for white crusty residue around the radiator hoses or the water pump. This indicates a slow "seep." Also, ensure the AC condenser isn't packed with debris or bent fins, which is common on trucks that spent time on farm roads.
5. Suspension and Chassis: The 100k Wobble
Silverados are famous for their smooth ride, but by 125,000 miles, the suspension components often need a refresh.
- What to look for: On your test drive, take a few corners. If the truck feels "looser" than it should or continues to bounce after a dip, it likely needs new shocks or ball joints.
- The Inspection: We put every Silverado on a lift to check the control arm bushings and leaf springs for cracks or excessive wear.
Why Buy Your High-Mileage Truck from Keller Used Cars?
Buying a high-mileage truck from a private seller on the side of the road is a gamble. At Keller Used Cars, we live and work right here in Hanford. We understand that our reputation is built on the reliability of the trucks we sell to our neighbors. Visit today and drive away in your very own Chevrolet Silverado 1500.