2012 Chevrolet Silverado 2500 HD Thermostats

Genuine GM thermostats for the 2012 Chevrolet Silverado 2500 HD, at wholesale prices. The opening temperature is matched to the engine calibration, so an off-spec thermostat sets codes without failing outright. GMT900 HD through 2014, K2XX HD from 2015 to 2019, and the T1XX HD from 2020.

Symptoms to look for

Slow warm-up, a low temperature gauge, or poor heater output. On a heavy duty pickup, two trucks with the same badge can take different parts once cab style and drivetrain are accounted for.

Why buy OEM here

• Real wholesale. The same thermostats your dealer sells, at a fraction over our cost.
• OEM, not lookalike. With thermostats the difference shows up on installation day, not in the photo.
• VIN verified fitment. We confirm the thermostats number against your vehicle before it ships.

Ordering correctly

Buying factory removes the variable. You are installing what the plant installed. We would rather spend two minutes verifying than process a return next week. Orders confirmed before mid-afternoon Central are on a truck that evening.