FRONT TIRE TO WHEELHOUSE PANEL INTERFERENCE

FRONT TIRE TO WHEELHOSE PANEL INTERFERENCE/NOISE

VEHICLES AFFECTED: 1986-88 PONTIAC F CAR ONLY WITH 16" TIRES -----------------

Customer comments of front tire to wheelhouse interference/noise on 1986 through 1988 Pontiac F-cars with 16" tires may be corrected with the following methods.

Some dealers have corrected this condition by reshaping the panels with a heat gun in the contact areas, by readjusting the panels or by other adjustments.

In the event this condition can not be corrected by using the above methods, it will be necessary to replace the panels with new parts from CANSPO and use the following procedure:

FIREBIRD/FORMULA MODELS -----------------------

Procedure:

---------

1. Raise vehicle on hoist and leave steering wheel unlocked. (It may be necessary to turn wheels and drill new wheelhouse attachment holes).

2. Remove center lower air deflector, and right and left outer deflectors.

3. Lower vehicle slightly and remove right and left wheelhouse panels.

4. Install new wheelhouse panels (P/N 10118486 right side and P/N 10118487 left side).

NOTICE: SOME PANELS WILL HAVE EXISTING HOLES FOR INBOARD ATTACHMENTS WHILE OTHERS WILL HAVE DIMPLES FOR IDENTIFYING HOLE LOCATIONS.

A. Attach wheelhouse panel to fender using the outboard plastic fasteners.

B. Locate inboard attaching holes with scratch awl and install screws. Note: The new panels have revised screw hole locations and on some models it may be necessary to drill new attaching holes in the sheet metal using a 1/8" drill bit.

5. Raise vehicle to original working height.

6. Prior to installing new outer deflectors, P/N 10118488 right side and 10118489 left side, transfer the attaching clips from the old deflectors to the new ones.

7. Install new center lower deflector P/N 10118485.

8. Lower vehicle and remove from hoist.

TRANS AM/GTA MODELS -------------------

Will require replacement of wheelhouse panels only. Refer to Steps 1, 3, 4 and 8 of the above procedure.

Use the most applicable labour operation from the Canadian Labour Time Guide and claim 1.3 hours.

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.