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 the Recommended Materials (Waterleak Repair) chart for proper repair materials.

After you complete any waterleak repair, retest the general area. Use the watertest stand. Do not use the air hose or water hose to test repaired areas. Abnormal pressure may dislodge the repair material.