CAMPAIGN: STEEL DISC WHEEL CRACKS - (REPLACE ALL WHEELS). Chevrolet Chevy P RV/Van/Commercial Chassis 1991

SUBJECT: PRODUCT SAFETY CAMPAIGN 92C21 - STEEL DISC WHEEL CRACKS

MODEL and YEAR: 1985-92 P3-42 MODEL TRUCKS

To: All Chevrolet Dealers

------------------------- 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 repair within sixty (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 an appointment with each owner and to repair their vehicle as soon as possible. As you will see in reading the attached copy of the letter that is being sent to owners, the owners are being instructed to contact the Chevrolet Customer Assistance Center if their dealer does not remedy the condition within five (5) days of the mutually agreed upon service date. I f the condition is not remedied within a reasonable time, they are instructed on 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 1985-92 P3-42 Commercial Chassis model vehicles equipped with 6.2L diesel engines (RPO LL4), I-beam front axles (RPO FS3), disc/drum power brakes (RPO JB8) and rated from 11,000# to 11,500# Gross Vehicle Weight (GVW) (RPO's C7E/C7G/9E6). Additionally, certain 1985 P3 42 Commercial Chassis model vehicles corrected under Chevrolet Product Safety Campaign 85C27, and equipped with disc/drum power brakes (RPO JB8) and rated at 11,000# to 11,500# GVW (RPO's C7E/C7G/9E6) are also involved.

These vehicles may exhibit cracking in the 19.5" x 6" front steel wheel disc. This cracking is circumferential, outside the bolt mounting circle, at or just underneath the clamp ring, and approximates the hub diameter. As the cracking progresses, it tends to become more visible and is likely to be noticed during routine maintenance. If the cracking should continue to go unnoticed until the center portion of the disc is completely cracked, the wheel will still be mechanically held between the clamp ring and the hub. Eventually, if the warnings are ignored, the rim portion of the wheel could separate inboard and a vehicle crash could occur.

To prevent the possibility of this condition occurring, dealers are to replace the two (2) front wheels with newly designed wheels. Additionally, since periodic tire rotations are a common and recommended practice, the four (4) rear wheels (and spare wheel also if one exists) will also be replaced in the interest of customer satisfaction.

VEHICLES INVOLVED

Involved are certain 1985-92 P3-42 Commercial Chassis model vehicles equipped with 6.2L diesel engines (RPO LL4), I-beam front axles (RPO FS3), disc/drum power brakes (RPO JB8) and rated from 11,000# to 11,500# Gross Vehicle Weight (GVW) (RPO's C7E/C7G/9E6). Additionally, certain 1985 P3 42 Commercial Chassis model vehicles corrected under Chevrolet Product Safety Campaign 85C27, and equipped with disc/drum power brakes (RPO JBS) and rated at 11,000# to 11,500# GVW (RPO's C7E/C7G/9E6) are also involved.

Involved vehicles were built within the following VIN breakpoints:

PLANT YEAR MODEL PLANT CODE FROM THROUGH ---- ----- ----- ------ ----- ------- 1985 P3-42 Detroit "3" F3315652 F3343388

1986 P3-42 Detroit "3" G3319631 G3334840

1987 P3-42 Detroit "3" H3300460 H3338717

1988 P3-42 Detroit "3" J3300548 J3340633

1989 P3-42 Detroit "3" K3303655 K3332414

1990 P3-42 Detroit "3" L3311063 L3323559

1991 P3-42 Detroit "3" M3302239 M3314860

1992 P3-42 Detroit "3" N3302653 N3309195

Involved vehicles have been identified by Vehicle Identification Number Computer Listings. Computer listings contain the complete Vehicle Identification Number, owner name and address data, and will be furnished to involved dealers at a later date. Owner name and address data furnished will enable dealers to follow-up with owners involved in this campaign.

These listings 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 the follow-up necessary to complete this campaign. Any dealer not receiving a computer listing with the campaign bulletin has no involved vehicles currently assigned.

OWNER NOTIFICATION

Owners will be notified of this campaign on their vehicles by Chevrolet Motor Division (see copy of owner letter included with this bulletin).

DEALER CAMPAIGN RESPONSIBILITY

All unsold new vehicles in dealers' possession and subject to this campaign must be held and inspected/repaired per the service procedure of this campaign bulletin before owners take possession of these vehicles.

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.

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.

In summary, whenever a vehicle subject to this campaign enters your vehicle inventory, or is in your dealership for service in the future, please take the steps necessary to be sure the campaign correction has been made before selling or releasing the vehicle.

PARTS INFORMATION

Parts required to complete this campaign for non-postal vehicles are to be obtained from General Motors Service Parts Operations (GMSPO). To ensure 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 on an advise code (2).

Quantity/ Part Number Description Vehicle ----------- ----------- ------- 15953256 Wheel Assembly - White 6 (7 If Equipped With Spare) 15953257 Wheel Assembly - Black 6 (7 If Equipped With Spare) 00273487 Valve Stem As Required (Old Stems Are Reusable)

SERVICE PROCEDURE

1. Replace 2 front and 4 rear wheel assemblies with newly designed wheels of appropriate color. Also replace spare wheel if equipped (RPO's SNF or SNR). Follow instructions provided in section 3E of the appropriate model year service manual.

Notice: Valve stems from original wheels should be unscrewed and reused if in good condition.

2. Install Campaign Identification label.

NOTICE:

Wheels replaced under this campaign should be damaged beyond further use and scrapped under normal parts disposal procedures.

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 the five (5) digit dealer code of the dealer performing the campaign service. This information may be inserted with a typewriter or a 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. Additional "Campaign Identification Labels" can be obtained from DAC.

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

CLAIM INFORMATION

Dealers are to submit Product Campaign Claims using the information indicated below (V7640, V7641, V7642 & V7643):

FAILED PARTS CC-FC LABOR LAB OTH NET REPAIR PERFORMED PC PART NO. ALLOW OP HRS HRS AMT ---------------- -- -------- ----- ----- ----- --- --- --- Replace 6 Wheels - Wheels ordered By 6 15953257 ** SK-00 V7640 3.1 0.1 $#.## Dealer

Replace 7 Wheels - Wheels Ordered By 7 15953257 ** SK-00 V7641 3.6 0.1 $#.## Dealer

Replace 6 Wheels - Wheels Shipped To - -- -- SK-00 V7642 3.1 0.1 $#.## - Repair Performed By Dealer

Replace 7 Wheels - Wheels Shipped To Postal Repair Ctr. - -- -- SK-00 V7643 3.6 0.1 $#.## - Repair Performed By Dealer

Postal Vehicle Repair Centers are to submit Claims using the information indicated below (V7644 & V7645):

FAILED PARTS CC-FC LABOR LAB OTH NET REPAIR PERFORMED PC PART NO. ALLOW OP HRS HRS AMT ---------------- -- -------- ----- ----- ----- --- --- --- Replace 6 Wheels - Wheels Shipped To - -- -- SK-00 V7644 3.1 0.1 - - Postal Repair Ctr.

Replace 7 Wheels - Wheels Shipped To - -- -- SK-00 V7645 3.6 0.1 - - Postal Repair Ctr.

All labor times include time for balancing wheels.

* Campaign Administrative Allowance.

** For labor operations V7640 and V7641 the "Parts Allowance" should be the sum total of the current GMSPO Dealer Net price plus 30% of all parts required for the repair.

*** The $#.## identified in the "Net Amount" column represents dealer cost plus 30% for balance weights used in conjunction with labor operations V7640, V7641, V7642 & V7643. This column should also be used to claim the appropriate cost of any valve stems replaced.

For labor operations V7642 & V7643 also use this column to claim the sum total of 30% of the current GMSPO Dealer Net price of all wheels required for the repair.

Dealers will automatically receive the correct labor and material allowance based on the labor operation performed.

Refer to the Chevrolet Claims Processing Manual for details on Product Campaign Claim Submission.

COPY OF LETTER TO OWNERS

(Notification Used By Chevrolet Motor Division) September, 1992

Dear Chevrolet P30 Truck Owner:

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

REASON FOR THIS RECALL

General Motors has determined that a defect which relates to motor vehicle safety exists in certain 1985-92 P3-42 Commercial Chassis model vehicles equipped with 6.2L diesel engines, I-beam front axles, disc/drum power brakes and rated from 11,000# to 11,500# Gross Vehicle Weight (GVW) . Additionally, certain 1985 P3-42 Commercial Chassis model vehicles corrected under Chevrolet Product Safety Campaign 85C27, and equipped with disc/drum power brakes and rated at 11,000# to 11,500# GVW are also involved.

WHAT WE WILL DO

To prevent the possibility of this condition occurring, your dealer will replace the two (2) front wheels with newly designed wheels. Additionally, since periodic tire rotations are a common and recommended practice, the four (4) rear wheels (and spare wheel also if one exists) will also be replaced in the interest of customer satisfaction. This service will be performed for you at no charge.

WHAT YOU SHOULD DO

Please contact your Chevrolet dealer as soon as possible to arrange a service date and so the dealer may order the necessary parts for the repair. Instructions for making this correction have been sent to your dealer and parts are available. The labor time necessary to perform this service correction is approximately 3 1/2 hours. Please ask your dealer if you wish to know how much additional time will be needed to schedule and process your vehicle.

Your Chevrolet dealer is best equipped to obtain parts and provide service to ensure that your vehicle is corrected as promptly as possible. If, however, you take your vehicle to your dealer on the agreed service date, and they do not remedy this condition on that date or within five (5) days, we recommend you contact the Chevrolet Customer Assistance Center by calling 1-800-222-1020.

After contacting your dealer and the Customer Assistance Center, if you are still not satisfied that we have done our best to remedy this condition without charge and 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 1-800-424-9393 (Washington D.C. residents use 366-0123).

The enclosed owner reply card identifies your vehicle. Presentation of this card to your dealer will assist in making the necessary correction in the shortest possible time. If you have sold or traded your vehicle, please let us know by completing the postage paid reply card and returning it 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 products.

Chevrolet Motor Division GENERAL MOTORS CORPORATION

Enclosure

COPY OF LETTER TO POSTAL TRUCK FLEETS

(Notification Used By Chevrolet Motor Division)

September, 1992

To Chevrolet P30 Truck Postal Fleets:

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

REASON FOR THIS RECALL

General Motors has determined that a defect which relates to motor vehicle safety exists in certain 1985-92 P3- 42 Commercial Chassis model vehicles equipped with 6.2L diesel engines, I-beam front axles, disc/drum power brakes and rated from 11,000# to 11,500# Gross Vehicle Weight (GVW) . Additionally, certain 1985 P3 42 Commercial Chassis model vehicles corrected under Chevrolet Product Safety Campaign 85C27, and equipped with disc/drum power brakes and rated at 11,000# to 11,500# GVW are also involved.

WHAT WE WILL DO =============== To prevent the possibility of this condition occurring, the two (2) front wheels on involved vehicles must be replaced with newly designed wheels. Additionally, since periodic tire rotations are a common and recommended practice, the four (4) rear wheels (and spare wheel also if one exists) must also be replaced in the interest of customer satisfaction.

In order to perform this repair Chevrolet is shipping each postal fleet the wheels (including spare) for performing the necessary wheel replacement. Each fleet may then elect to either perform this repair themselves or to have their Chevrolet dealer perform the repair.

WHAT YOU SHOULD DO

For fleets electing to perform this repair themselves, instructions for making this repair and a list identifying your involved vehicles are enclosed. Instructions for submitting claims for performing these repairs are included in the enclosed campaign bulletin.

If you wish for your Chevrolet dealer to perform this repair, please contact your dealer as soon as possible to schedule an appointment. The labor time necessary to perform this service correction is approximately 3 1/2 hours. Please ask your dealer if you wish to know how much additional time will be needed to schedule and process your vehicle. Be certain to bring the wheels shipped to your fleet to your dealer so they may be used to repair your vehicles.

If you take your vehicle to your dealer on the agreed service date, and they do not remedy this condition on that date or within five (5) days, we recommend you contact Chevrolet Fleet Service Operations by calling 1-800-334-5370. If after contacting your dealer and Fleet Service Operations you are still not satisfied that we have done our best to remedy this condition without charge and 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 1-800-424-9393 (Washington D.C. residents use 366-0123).

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 products.

Chevrolet Motor Division GENERAL MOTORS CORPORATION

Enclosure

Object Number: 89485 Size: SF

Object Number: 89346 Size: SF

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.