1997 Chevrolet Tahoe Owner's Manual - Page 211

Hydroplaning usually happens at higher speeds. There just isn't a hard and fast rule about hydroplaning. The best advice is to slow down when it is raining. City Driving Driving Through Deep Standing Water I NOTICE: If you drive too quicklythrough deep puddles or standing water, water cancome in throughyour engine's air intake andbadly damage your engine. Neverdrive through water that slightly is lower than the underbodyof your vehicle. If you can't avoid deeppuddles or standing water, drive through them very slowly. I Some Other Rainy WeatherTips Besides slowing down, allow some extra following distance. And be especially careful when you pass another vehicle. Allow yourself more clear room ahead, and be prepared to have your view restricted by road spray. Have good tires with proper tread depth. (See "Tires" in the Index.) One of the biggest problems with city streets is the amount of traffic on them. You'll want to watch out for what the other driversare doing and pay attention to traffic signals. 4-32