2014 Chevrolet Silverado 2500 HD Thermostats

Genuine GM thermostats for the 2014 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.

How you know

Slow warm-up, a low temperature gauge, or poor heater output. On a heavy duty pickup, box length and cab style drive more part number splits here than the engine does.

What you get ordering from us

• Factory sourced. These thermostats are built to GM's own drawing by the supplier GM contracted.
• No guessing. Our VIN lookup resolves the near-identical thermostats numbers for you.
• Ships from Dallas. Thermostats ordered by 3pm Central go out the same business day.
• Straightforward returns. No restocking games on thermostats that did not fit.

Confirming fitment

Aftermarket versions are often close enough to install and far enough off to cause a repeat repair. Option packages divide this catalog more than model years do. Send the VIN and skip the problem. Our Dallas location means most of the country is inside a two or three day ground window.