1995 GMC Jimmy Owner's Manual - Page 180

Driving too fast through large water puddles or even going through some car washes can cause problems, too. The water may affect your brakes. Try to avoidpuddles. But if you can't, try to slow down before you hit them. Hydropraning Hydroplaning is dangerous. So much water can build up under your tires that they can actually ride on the water.This can happen if the road is wet enough and you're going fast enough. When your vehicle is hydroplaning, it has little or no contact with the road. Hydroplaning doesn't happenoften. But itcan if your tires haven't much tread or if the pressure in one or more is low. It happen if a lot of water can is standing on the road. If you can see reflections from trees, telephone poles, or other vehicles, and raindrops "dimple" the water's surface, there could be hydroplaning. 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. 4-26