GM Service Manual Online
For 1990-2009 cars only

Caution: Standard shop practices, particularly eye protection, should be followed during these operations to avoid personal injury.

  1. Apply liquid soap to the suspected area.

  2. Object Number: 95574  Size: SH

    Important: Do not exceed 205 kPa (30 psi).

  3. Apply air pressure using an air hose from inside the vehicle.

  4. Object Number: 95573  Size: SH
  5. Inspect for bubbles on the outside at the suspected leak area.