Bravada V6-4.3L VIN W (1997)
The inside of the plenum along the hinge pillar may have a void in the sealer. Refer to the illustration shown.
Inspect for voids outside the plenum along the hinge pillar. Refer to the illustration shown.
Correction
Clean the area with one of the cleaners listed and seal the area with one of the sealers listed.
