ACDelco Gold 15-11125G 19474058 Engine Coolant Thermostat

Oem quality and perfect fit and function. Reasonable price compared to dealership. Read more

Perfect fit. Easy 10 minute replacement. Cooling fans are now off. Read more

Fixed my thermostat issues on my 2015 Silverado pretty simple but messy install brought all my temps back to normal. Read more

Installed in 20-min. Worked perfectly as described. Read more

The first problem that I noted was that the engine coolant temperature was consistently lower than it should be. Next, I noted that when I stopped the truck, the cooling fan continued to run on high even though the engine temperature was the self regulating point. Upon scanning the ECM I discovered a code P0128 engine coolant below self regulating temperature. Once I cleared the code, the cooling fan quit running on high after the engine was shut off. I ordered a new thermostat to fix the problem. As soon as I installed the new thermostat, all of my issues have been resolved. This ACDelco thermostat comes with the gasket. I definitely recommend this OE product because fit and function are perfect and the price is reasonable. Do not be tempted by aftermarket products because since the Covid-19 shutdowns, many products are made too cheaply and do not perform as expected. Read more

Fits a 2017 Yukon. You can use a j hose clamp from Harbor Freight to keep the main radiator hose from loosing a lot of coolant. This is the 210 F model. Read more

So far so good, seems to be a genuine GM part, has been holding temp properly. Read more

OEM part. Works as it should. Was having issues with the old thermostat sticking open and causing the fans to constantly run on high. So far this new one seems to have cured it. There may be cheaper options for knock off brand. Stick with AC Delco. Read more