2013 GMC Sierra 1500 Thermostats

Genuine GM thermostats for the 2013 GMC Sierra 1500, at wholesale prices. The opening temperature is matched to the engine calibration, so an off-spec thermostat sets codes without failing outright. GMT900 through 2013, K2XX from 2014 to 2018, and the T1XX from 2019 with the CarbonPro bed option.

What sends people here

Slow warm-up, a low temperature gauge, or poor heater output. On a light 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.

Before you order

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.