For 1990-2009 cars

# WIRE AND ALUMINUM WHEEL COVER INFORMATION

#### VEHICLES AFFECTED: All Vehicles with Locking Wheel Discs or Locking Wheel Nuts

The following is additional information to that published in Bulletin 3-104 (1984).

LOCKING WIRE WHEEL DISCS

#### Wire Wheel Cover Company

These wire wheel covers require a 'T' shaped lock key wrench. The wrench will have a letter stamped on its cylinder portion and a coloured plastic cap on the top of the cylinder. The pattern is known as a groove pattern and is illustrated below.

Examples of this design can be seen on the 1985 Oldsmobile 98.

These wrenches are a available from:

WIRE WHEEL COVER P.O. BOX 522 GRENADA, MS. 38901

#### NORIS INDUSTRIES

Norris and ITT Thompson Systems are being used on 1985 Cadillac C FWD Deville and Fleetwood. The Norris system is a new spline pattern which is larger in diameter than the ITT Thompson system. This Norris system is colour coded and is available from:

Dominion Sure Seal Limited Rocky Mountain Sales Inc. 4635 Burgoyne St. Unit 1 No. 8, 11711 No. 5 Road Mississauga, ontario Richmond, BC L4W 1V9 V7A 4E8 Phone (416) 625-7900 Phone (604) 277-1711 (Alberta, British Columbia orders)

Other wire wheel cover replacement parts for 1985 Cadillac C-cars can be ordered from GM parts per the GM Parts Catalogue. These parts (except for flanged lug nuts) are specific to the manufacturer (i.e. Norris, ITT). The two systems can be differentiated as follows:

LOCKING WHEEL NUTS - FOR ALUMINUM WHEELS AND AUTHENTIC WIRE WHEELS

#### McGard

An additional McGard system is in use. Examples of this system can be seen on late 1984 and 1985 Corvettes, and 1984 Fieros. These wrenches are shrouded and have a larger pattern than other McGard systems (see illustration below).

ONLY AVAILABLE FROM:

McGARD, INC. CUTOMER SERVICE DEPT. 852 KENSINGMN AVE. BUFFALO, NY 14215

#### American Accessories (Amcor)

This system can be seen on Fifteenth Anniversary Firebirds (1984) and 1985 Fieros.

These wrenches are available from:

AMERICAN ACCESSORIES 2141 EAST 51ST STREET LOS ANGELES, CA 90058

In case of extreme urgency American Accessories may be contacted by phoning (213) 585-0994.

Orders to these new suppliers must be placed on dealer stationery, specify colour requirement and V.I.N.

Master sets for the systems in this bulletin have been ordered for placement in the Zone Offices.

"We believe these sources and their equipment to be reliable. There may be additional manufacturers of such equipment. General Motors does not endorse, indicate any preference for, or assume any responsiblilty for the products or equipment from these firms or for any such items which may be available from other sources."

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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.