GM Service Manual Online
For 1990-2009 cars only

At regular intervals, inspect all pipes, hoses, and fittings for leaks. The fittings must be tight. All clips, clamps, and unions supporting the pipes and hoses must be in place and properly secured. Make sure all hoses and pipes are installed so they do not contact parts of the vehicle that could cause chafing or wear on the hoses.

Before checking for leaks, wipe the suspected area clean. When fluid leaks appear, tighten, repair, or replace nearby fittings and bolts.