LOOSE HOOD PANEL ADHESIVE SEPARATION

Some early 1982 "S" Trucks may experience separation of the inner reinforcement adhesive from the hood outer panel. This was due to oven over bake at assembly plants during start of production.

The recommended adhesive for correction is a Uniroyal product, Silaprene 6326B, or equivalent available throuqh:

Uniroyal, Inc. Adhesive & Sealant Department 312 N. Hill St. Mishawaka, Indiana 46544 (219) 255-2181

SERVICE PROCEDURE

(1) Raise hood and, if applicable, remove insulator.

(2) Remove all loosely adhering mastic between panels and clean underlying areas with either steel wool or sandpaper.

NOTICE: Working clearance can be obtained by carefully inserting a small piece of wood (or rubber) 6-7mm thick (1/4 inch), between inner and outer panels. Care should be taken not to apply undue pressure to outer panel as this might result in denting of panel.

(3) Using the 1/4 inch thick piece of wood (or rubber) as a wedge between inner and outer panels, apply a generous amount of repair mastic, Silaprene 6326B, or equivalent in localized areas where mastic separation has occurred.

(4) Allow mastic adhesive to properly cure by baking (e.g. heat lamps) hood repair areas at 150 DEG for one (1) hour.

NOTICE: Air drying at ambient temperature will not accomplish proper curing of Silaprene 6326B mastic.

(5) Reinstall, if necessary, hood insulator to underhood panel.

Labor Operation: T0072

Labor Time: .4 Hour

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.