DIAGNOSIS:SQUEAKS & RATTLES REPAIR PROCEDURES REQUIRED

THIS BULLETIN CONTAINS THE POSSIBLE CAUSES AND REPAIR PROCEDURES OF SQUEAKS AND RATTLES ON THE 1986 FIERO GT. MANY SQUEAKS AND/OR RATTLES CAN BE CAUSED BY LOOSE OR STRIPPED FASTENERS. BEFORE ANY ATTEMPT IS MADE TO REPAIR A SQUEAK OR RATTLE, PROPER DIAGNOSIS SHOULD BE MADE TO DETERMINE THE CAUSE OF THE CUSTOMER COMPLAINT. CONDITION: CREAK AND/OR SQUEAK NEAR UPPER FRONT AND REAR ROOF PANEL WHEN DRIVING UP INCLINE OR OVER BUMPS. CAUSE: THE DRIP RAIL MOLDING BRIDGING TWO INDEPENDENT PANELS, THE ROOF AND QUARTER, MAY CREATE A SQUEAKING AND/OR CREAK NOISE. VEHICLES BUILT AFTER VIN GP278695 HAVE AN ISOLATING MATERIAL BETWEEN THE BODY PANELS AND DRIP RAIL WHICH ELIMINATES THE NOISE. CORRECTION: TO REPAIR THIS CONDITION, REMOVE THE DRIP RAIL MOLDING (REFER TO SEC 10, 8-5 BODY SECTION OF THE SERVICE MANUAL). APPLY A 1/8" BEAD OF 3M FLEXICLEAR P/N #08405 (AVAILABLE AT LOCAL 3M SUPPLIERS) OR EQUIVALENT IN THE CHANNEL OF THE DRIP RAIL MOLDING, REINSTALL DRIP RAIL MOLDING (REFER TO FIGURE 1) CONDITION: CREAK NOISE IN RIGHT REAR OF LOCK PILLAR AREA WHEN DRIVING OVER BUMPS. THIS CONDITION IS ONLY ON VEHICLES BUILT BEFORE VIN GP277237. CAUSE: INTERFERENCE BETWEEN THE REAR DEFOGGER GROUND SCREW AND THE INNER BODY REINFORCEMENT PANEL. CORRECTION: RELOCATE THE REAR DEFOGGER GROUND SCREW UPWARD 5MM (REFER TO FIGURE 2). CONDITION: ETCHING OR CRACKING NOISE AT TOP OF THE QUARTER WINDOW. CAUSE: TOP EDGE OF THE QUARTER GLASS RUBBING AGAINST THE DOOR WEATHERSTRIP RETAINER. CORRECTION: SEPARATE TOP EDGE OF QUARTER GLASS FROM DOOR WEATHERSTRIP RETAINER BY RELOCATING THE RETAINER VERY SLIGHTLY INWARD (REFER TO FIGURE 3). CONDITION: RATTLE FROM SUN ROOF AREA. THIS CONDITION IS ONLY ON VEHICLES BUILT BEFORE VIN GP265214. CAUSE: SUN ROOF LATCH. CORRECTION: REPLACE OLD LATCH WITH NEW LATCH, P/N 20678129. *******THREE PAGES OF ART TO FOLLOW TEXT.******* PONTIAC DISCLAIMER

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.