I believe it is about 120 mph.
There are two;first one under front bumper; then one between hood & top of Grill.
the top speed is 186.9 mph
The top speed is 108 mph
The top speed of a 2011 Chevy silverado ltz 1500 is 97 mph
the top speed is 85 mph
175
97mph is when the speed regulater stops you.
that all depends on the rear gearing and the engine.
85 mph.
around 189MPH
Follow the top radiator hose, to where it joins the motor. Inside of that housing, is the thermostat.