Jump to content
  • Sign up for FREE! Become a GM-Trucks.com Member Today!

    In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. 

2017 Chevy Silverado Thermostat Running Cold

Recommended Posts

It probably just stuck to the water outlet from heat cycles that kinda glue it to the surface. It's a 50/50 shot on whether yours sticks or not, just remove it, clean the surface with a rag and slap the new one on.

  • Thanks 1
Link to comment
Share on other sites

All done! Was pretty simple like you said it would be. I did clamp the large hose, loosened clamps on large and small hoses and initially left them on old thermostat after removing the bolts and held it up. Only lost a little bit of coolant pulling off old thermostat and immediately popping the new one in place. I did put a plastic container on ground underneath to catch any list coolant but it was still dry at the end. That old gasket did stay on water pump outlet so I just grabbed it before popping new thermostat on. The whole process didn't take long and was very easy to do. I'd say even easier than changing a tire.


After starting up the truck, it finally reached the 210⁰ hash mark on gauge and stays pretty steady. I'm already aware that it isn't completely accurate but has a range of about 20⁰ cooler or hotter than the gauge shows. However, over the last week or so, my gauge never even reached the 210⁰ mark and would swing back and forth on the left side hash marks between the first one above 160⁰ and 210⁰. So I consider this a win...

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.