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
that all depends on the rear gearing and the engine.
97mph is when the speed regulater stops you.
around 189MPH
85 mph.
Follow the top radiator hose, to where it joins the motor. Inside of that housing, is the thermostat.