Hood - Rear Edge Fluttering Condition

90chevy25
GMC NUMBER: 91-10-20

GROUP: 10 Body Section

DATE: September, 1990

CORPORATE
NUMBER: 061006
SUBJECT: HOOD PANEL REAR EDGE FLUTTER

MODELS: 1989-91 S/T VEHICLES
The rear hood edge of some 1989 through 1991 S/T Vehicles may exhibit a fluttering condition. A field repair has been tested and has proven effective in correcting this condition. This is done by means of rubber hood bumpers (hood stops) which exert a pressure to the underside of the hood. This eliminates the freedom of motion that the hood is experiencing.

Figure No. 1:

SERVICE PROCEDURE To repair this condition do the following:

1. Obtain two rubber hood bumpers part # 458306.
2. Measure 8 and 1/2 inches along lower cowl panel from the inboard side of the front fenders as shown in Figure 1 dimension "A".

3. Place bumper so that the middle of the bumper lines up with the inboard measurement.

4. Remove the old contact adhesive by sliding the hood stop against a smooth surface. Using 400 grit sand paper very lightly scuff the surface areas to be glued for maximum adhesion.
NOTE: If the placing of the hood stops under the hood causes the hood to rise to more than 118 of an inch above the cowl panel then, remove some of the rubber from the top of the bumper using a razor blade or sharp knife and continue until an acceptable height is achieved.
5. Use weatherstrip adhesive 12345097 to glue bumpers to vehicle.

PARTS INFORMATION

Part Number Description Per Vehicle
458306 Rubber Hood 1 per side
Bumper
12345097 Weatherstrip As needed
Adhesive

Parts are currently available through GMSPO.

WARRANTY INFORMATION For vehicles repaired under warranty use:

Labor Operation: T7600

Labor Time: 0.2 hr.

NOTE: Labor Operation is coded to base vehicle coverage in the warranty system.