GM Service Manual Online
For 1990-2009 cars only

In order to locate the exact leak point or in order to repair the leak, you may need to remove some interior trim panels or components. Refer to Recommended Materials (Waterleak Repair) for the proper repair materials.

After you complete any waterleak repair, retest the area using the Generalized Testing method. Do not use the air hose or water hose to test repaired areas. Abnormal pressure may dislodge the repair material.