CAMPAIGN:INCORRECT STEEL SPARE WHEEL. GMC Truck GMC G Van 1993

SUBJECT: INCORRECT STEEL SPARE WHEEL (STAMP CODE XH), INSTALL NEW RIM (STAMP CODE XAH)

MODELS: 1993 G2 VANS FLINT BUILD ONLY (PLANT CODE F)

The National Traffic and Motor Vehicle Safety Act, as amended, provides that each vehicle which is subject to a recall campaign of this type must be adequately repaired within a reasonable time after the owner has tendered it for repair. A failure to adequately repair within 60 days after tender of a vehicle is prima facie evidence of failure to repair within a reasonable time.

If the condition is not adequately repaired within a reasonable time, the owner may be entitled to an identical or reasonably equivalent vehicle at no charge, or to a refund of the purchase price less a reasonable allowance for depreciation.

To avoid having to provide these burdensome solutions, every effort must be made to promptly schedule appointments with owners and to repair their vehicles as soon as possible. As you will see in reading the attached copy of the letter which is being sent to owners, the owner is being instructed to contact the GMC Truck Division Consumer Relations Office if the dealer does not remedy the condition within five days of the mutually agreed upon service date. If the condition is not remedied within a reasonable time, they are instructed how to contact the National Highway Traffic Safety Administration.

DEFECT INVOLVED

General Motors has determined that a defect which relates to motor vehicle safety exists in CERTAIN 1993 G20 series vans equipped with base wheels. Some of these vehicles were built with an incorrect spare wheel. The use of an incorrect spare wheel at a regular wheel position could, under certain loading conditions, eventually cause the wheel to crack and possibly result in separation of the wheel from the vehicle. If the wheel separates from the vehicle, loss of control may occur resulting in a vehicle crash without prior warning.

To prevent this condition from occurring, involved vehicles will be inspected for the correct spare wheel and if an incorrect wheel has been installed, the wheel will be replaced.

VEHICLES INVOLVED

Involved are CERTAIN 1993 G2 vans equipped with base wheels (-N67/PF3) built within the following VIN breakpoints:

Year Model Plant From Through

1993 G2 Van Flint SOP F513784

The specific vehicles involved in this campaign have been identified by Vehicle Identification Number (VIN) Computer Listings. These listings are furnished to all involved dealers with the campaign. Dealers should confirm vehicle eligibility through VISS (Vehicle Information Service System) or SERVICENET prior to beginning campaign repairs.

DEALER CAMPAIGN RESPONSIBILITY

Dealers are to service all vehicles subject to this campaign at no charge to owners, regardless of mileage, age of vehicle, or ownership, from this time forward. Dealers are to inspect and correct all affected vehicles in new and used vehicle stock prior to their sale.

Whenever a vehicle subject to this campaign is taken into your new or used vehicle inventory, or it is in your dealership for service in the future, you should take the steps necessary to ensure the campaign correction has been made before reselling or releasing the vehicle.

Owners of vehicles recently sold from your new vehicle inventory are to be contacted by the dealer and arrangements made to make the required correction according to instructions contained in this bulletin.

If the name and address of the owner of an involved vehicle was unavailable to GMC Truck Division at the time of campaign initiation, the dealer must determine the owner's name and address from the dealership sales records. Please provide this information directly on the second copy of the listing next to the applicable VIN so that our records may be updated and the appropriate notification mailed to the owner. This second copy should then be submitted to the address listed below in the previously supplied yellow campaign envelopes.

GMC Truck Division General Motors Corporation 101 Union Street Plymouth, Michigan 48170

OWNER NOTIFICATION

Owners will be notified of this campaign on their vehicles by GMC Truck Division (see copy of owner letter included with this bulletin). A listing of owner names and addresses has been furnished to the involved dealers to enable dealers to follow up with owners involved in this campaign. This listing may contain owner names and addresses obtained from State Motor Vehicle Registration records. The use of such motor vehicle registration data for any other purpose is a violation of law in several states. Accordingly, you are urged to limit the use of this listing to this campaign.

SERVICE PROCEDURE

NOTICE: THIS CAMPAIGN DOES NOT INCLUDE RALLY OR ALUMINUM WHEELS.

INSPECTION OF THE SPARE STEEL WHEEL

1. The spare wheel will be located inside at the rear of the vehicle. The spare wheel will have a stamp code located to one side of the air valve stem as shown in Figure 1.

2. Verify the stamp code. If the stamp code is XH, the spare wheel must be replaced.

3. Remove the spare wheel from the carrier by removing the fastener shown in FIGURE (2).

4. The steel spare wheel comes from the factory painted white. The paint used is a high solid baked enamel, GM CODE WA-8624. The wheel that is received from GMSPO is painted with a primer black. The steel spare wheel MUST be painted white. If the spare wheel has been painted an alternate color, this color must be matched to the same color. It may be necessary to contact the customer if any color other than white is needed. For paint reference, refer to the paint instructions listed below.

NOTICE: When the steel spare wheel is mounted at the factory, the wheel does not have a spare tire mounted on the wheel.

IMPORTANT: It is possible that the customer has had a tire mounted to the spare wheel. The spare tire will have to be removed and mounted to the replacement wheel.

IMPORTANT: It is possible that the customer has had a flat tire or rotated the tires and has installed the spare tire to a regular wheel position. If this has happened, it will be necessary to inspect all wheels on the vehicle.

REMOVAL AND MOUNTING OF THE SPARE STEEL WHEEL WITH MOUNTED TIRE

1. Remove the spare wheel from carrier is accomplished by removing the fastener shown in FIGURE (2).

2. Use a tire changing machine to mount and dismount the tire. Follow the manufacturers instructions. Do not use hand tools or tire irons to change a tire as they may damage the tire bead or wheel rim flanges.

3. Rim bead seats should be cleaned with a wire brush or course steel wool to remove contaminants from the bead area. Before mounting or dismounting a tire, the bead area should be cleaned and well lubricated.

4. Install the valve stem and inflate to proper air pressure, which is located on the tire. Check locking rings of the tire to make sure they show around the rim flanges on both sides of wheel.

NOTICE: It is important to note that damage to either the tire mounting surface or the wheel holes can result from the use of improper wheel attachment or tire mounting techniques. It takes 70 seconds for all the air to completely exhaust from a large tire. Failure to follow proper procedures could cause the tire changer to put enough force in the tire to bend the wheel at the mounting surface. Such damage may result in vibration and/or shimmy and under severe use may lead to cracking.

CAUTION:

Do not stand over the tire when inflating. The bead may break when it snaps over the safety hump and may cause serious personal injury. Do not exceed 275 kPa (40 psi) pressure when inflating. If 275 kPa (40 psi ) pressure will not seat the beads, deflate, re-lubricate, and reinflate. Over inflation may cause the bead to break and result in personal injury.

REMOVAL AND MOUNTING OF TIRE AND WHEEL IF THE SPARE HAS BEEN ROTATED TO A REGULAR WHEEL POSITION. ----------------------------------------------------------------------------- REMOVAL OF TIRE AND WHEEL ASSEMBLY ---------------------------------- 1. Raise the vehicle and support with safety stands.

2. Remove Hub cap if required.

3. Remove wheel nuts.

4. Remove tire and wheel assembly.

5. Remove tire from wheel by following the instructions previously mentioned for tire and steel spare wheel removal mounting.

INSTALL TIRE AND WHEEL ASSEMBLY

1. First, clean all wheel nuts, bolts, and the wheel and rotor mounting surface.

2. Install tire and wheel assembly.

3. Tighten all wheel nuts (Qty. 5 studs). Do not torque at this time.

4. Torque wheel nuts (Qty. 5) in an even and alternating sequence to 140 Nm (100 lb. ft.)

5. Install Hub cap if required.

6. Remove support stands and lower vehicle.

IMPORTANT: Before installing the wheel, remove all contaminants on the wheel mounting surface and brake disc or drum mounting surface by scraping and wire brushing. Installing wheels with poor metal to metal contact at the mounting surfaces can cause wheel nuts to loosen. This may lead to a rim coming off while the vehicle is moving. Possible loss of control and may result in personal injury.

NOTICE: A torque wrench must be used to ensure that the rim nuts are tightened to specification. Never use lubricants or penetrating fluids on wheel studs, nuts, or mounting surfaces, as this may raise the actual torque on the nut without a proper torque reading on the torque wrench. Rim nuts, studs, and mounting surfaces must be clean and dry. Failure to follow these instructions could result in rim, nut, and/or stud damage.

BALANCING TIRES AND WHEELS

There are two types of tire and wheel balancing, static and dynamic. Static balance is an equal distribution of weight to the inboard and outboard rim flanges at one location of the wheel. Dynamic balance is the distribution of weight on each side of the centerline so that when the assembly spins, there is no tendency of the assembly to move from side to side.

IMPORTANT: Foreign material must be cleaned from the inside of rim. Stones should be removed from the tread in order to avoid injury during spin balance. The tire should be inspected for any damage, the properly balanced according to the equipment manufacturer's recommendations.

1. When balancing tire and wheel assemblies off the vehicle, use a balancer that pilots the wheel by the center hole (not wheel bolt holes) if possible. Always follow the equipment manufacturer's instructions.

PARTS INFORMATION

Parts are to be obtained from General Motors Service Parts Operation (GMSPO). To ensure that these parts will be obtained as soon as possible, they should be ordered from GMSPO on a C.I.O. order with no special instruction code but order under an advise code (2).

PAINT INSTRUCTIONS

IMPORTANT: The steel spare wheel must be clean and free from all contaminants. If the wheel is not clean, poor adhesion of paint will result.

Paint can be obtained from any GM paint supplier. The paint must be a exterior Hi solid Enamel.

GM CODE: WA-8624 PRODUCT CODE: BE-1123

Follow all material allowances and labor times from the 1993 Labor Time Guide. Enamel material allowance code is "PB."

WARRANTY INFORMATION

Dealers should submit an accurately filled out Warranty Repair Order on each vehicle completed under this campaign.

Labor Operation Number Description *Time Allowance **Parts Allowance ---------------------------------------------------------------------------- V 8770 Inspect Stamp code 0.2 hrs.

V 8771 Replace Steel Spare Wheel 0.9 hrs. $8.54 w/o Mounted Tire (Inc. Paint Time) Paint Material Allowance

V 8772 Replace Steel Spare Wheel w/ 1.5 hrs. $8.54 Mounted Tire (Inc. Paint Time Paint Material and Balance) Allowance

V 8773 Replace Steel Spare Wheel w/ 1.5 hrs. $8.54 Mounted Tire to Regular Wheel Paint Material Position (Inc. Paint Time and Allowance Balance)

* For dealer to receive Administrative Time Allowance associated with this campaign, add 0.1 hour to the Labor Operation Time Allowance.

** The amount identified in the "Parts Allowance" column above represents 30% of dealer net for parts that are furnished in this campaign. This amount is to be placed in the Net Item Amount column of the claim and Type Code "M."

CAMPAIGN IDENTIFICATION LABEL

Each vehicle corrected in accordance with the instructions outlined in this product campaign bulletin will require a "Campaign Identification Label." Each label provides a space to include the campaign number and five (5) digit dealer code of the dealer performing the campaign service. This information may be inserted with a typewriter or ball point pen.

Each "Campaign Identification Label" is to be located on the radiator core support in an area which will be visible when the vehicle is brought in for periodic servicing by the owner.

Apply "Campaign Identification Label" only on a clean, dry surface.

ADMINISTRATIVE PROCEDURE

Procedures covering this campaign are outlined in Section V of your dealership's "GMC Truck Warranty Claims Processing Manual" #P9119.

Dear GMC Truck Owner:

This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act.

To correct this condition, vehicles will be inspected for the correct spare wheel and if an incorrect wheel has been installed. the wheel will be replaced. This service will be performed for you at no charge.

Instructions for performing this service have been sent to your GMC Truck dealer and parts are available. Please contact your dealer to arrange a service date. The labor time necessary to perform this correction will be approximately 1 to 1.5 hours. Please ask your dealer how much additional time will be needed to process your vehicle.

Your GMC Truck dealer is best equipped to provide service to ensure your vehicle is corrected as promptly as possible. However, if you take your vehicle to your dealer on the agreed service date and they do not service this condition on that date or within five days, we recommend you contact GMC Truck Consumer Relations by telephone. Consumer Relations will assist you and your dealer in getting your vehicle corrected. The telephone number of the Consumer Relations office is listed in your Warranty and Owner Assistance Information Manual.

After contacting your dealer and GMC Truck Division, if you are still not satisfied that we have done our best to remedy this condition without charge within a reasonable time, you may wish to write the Administrator, National Highway Traffic Safety Administration, 400 Seventh Street, S.W., Washington, D.C., 20590, or call 800-424-9393 (Washington, D.C. residents use 366-0123).

The enclosed postage paid owner reply card identifies your vehicle. Presentation of this card to your dealer will assist in making the necessary correction to your vehicle in the shortest possible time. If you have sold or traded your vehicle, please furnish us complete name and address of the person you sold or traded your vehicle to and return the card to us.

We are sorry to cause you this inconvenience; however, we have taken this action in the interest of your safety and continued satisfaction with our product.

GMC TRUCK DIVISION GENERAL MOTORS CORPORATION

Object Number: 93972 Size: MF

Object Number: 84082 Size: FS

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.