Tips for Your 2017 Duramax Thermostat Replacement

If you've noticed your temperature gauge acting a bit wonky or your truck is taking forever to warm up, it's likely time for a 2017 duramax thermostat replacement. Dealing with cooling issues is never fun, but on the L5P engine—which debuted in the 2017 model year—it's a job that most backyard mechanics can handle if they have a little patience and a few basic tools. ...

February 9, 2026 · 6 min · Majbritt Madelene