DIAGNOSIS:SQUEAKS & RATTLES REPAIR PROCEDURES REQUIRED

VEHICLES AFFECTED: 1986 FIERO GT

This bulletin contains the possible cause 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 azid rear roof panel when driving up incline or over bumps.

CAUSE

The drip rail moulding 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 drit) rail moulding (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 eqliivalent in the channel of th drip rail moulding, reinstall drip rail moulding (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 gfound screw and the inner body reinforcement panel.

CORRECTION

Relocate the rear defogger ground screw 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.

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.