ACDelco GM Genuine Parts 15-11125 Water Pump Outlet Assembly with Thermostat

I ordered this for my 2016 Silverado LTZ. I was having issues with the temperature barely getting above 150° most of the time it wouldn’t get above 140. And with winter rapidly approaching, I decided to give it a try. Installation was quite simple. This thermostat and housing is a one piece assembly unlike the traditional ones with an aluminum reusable housing, With this particular design you just throw the old housing away and install the whole new assembly. Everything fit perfectly the instructions were straightforward and boy What a difference in heat output. You can barely hold your hand in front of the vent now and she consistently runs at 205*F after if she warms up. Very satisfied.!!!

works great and perfect fit on my 2015 gmc yukon denali

Perfect replacement and very easy to install

I replace the thermostat on my silverado 5.3 2014 165k miles 6 months ago, well i put on a murray brand from Oreilly auto parts because they did not had the AC Delco in stock, it lasted 6 months and well i tought it would be the water pump because normally thermostats wont get bad specially in 6 months, saw some videos on youtube and people where saying not to replace the thermostats on this truck with an aftermarket to always use oem, i order this oem thermostat and gave it a try before i try to replace first the water pump. Worked great it did not overheat no more, so dont risk it with aftermarket for the ecotec engines.

Perfect fit and holds the correct engine temperature extremely well.

This product is working as intended. Originally from GMC seal. Changed to my GMC Sierra for temperature problems, but running smoothly now!

Fit perfectly!

excellent