CAMPAIGN:INCORRECT RADIATOR CAP
Subject: PRODUCT CAMPAIGN 94C07 - INCORRECT RADIATOR OR SURGE TANK PRESSURE CAP ASSEMBLIES INSTALLED
Model and Year: 1994 C3500HD CHASSIS CAB
To: All Chevrolet/Geo Dealers
General Motors has determined that certain 1994 Chevrolet C3500HD Chassis Cab model vehicles may have been built with incorrect radiator or surge tank pressure caps. Vehicles with gasoline engines use a radiator pressure cap. Vehicles with diesel engines use a surge tank pressure cap. An incorrect radiator or surge tank pressure caps can cause damage to cooling system and engine components
To correct this condition, General Motors will send the correct radiator surge tank pressure cap to each owner of specific vehicles involved in this campaign. The owner may inspect the factory installed radiator or surge tank pressure cap and replace it if required according to the procedure included with the correct cap. Or the owner may want to have the dealer inspect the radiator or surge tank pressure cap and perform the installation. The dealers will inspect the installed radiator or surge tank cap and install the correct cap that was provided to the owner if necessary.
VEHICLES INVOLVED
Involved are certain 1994 Chevrolet C3500HD Chassis Cab model vehicles built within the following VIN breakpoints:
PLANT YEAR MODEL PLANT CODE FROM THROUGH ---- ----- ----- ----- ---- ------- 1994 C3500HD Janesville "J" RJ100239 RJ100497
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 are furnished to involved dealers with the campaign bulletin. 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 with no owner information indicated on the dealer listing, are to be contacted by the dealer, and arrangements made to make the required correction according to the instructions contained in this bulletin. This could be done by mailing to such owners a copy of the owners letter accompanying this bulletin. Campaign follow-up cards should not be used for this purpose, since the owner may not as yet have received the notification letter.
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
A new pressure cap and installation instructions will be mailed to owners of record by Chevrolet on a no charge basis. If additional parts are required, they should be obtained from General Motors Service Parts Operations (GMSPO). These parts should be ordered on a "C.I.O." order with no special instruction code, but on an advise code two (2).
Quantity/ Part Number Description Vehicle ----------- ----------- --------- 06410785 Radiator Pressure Cap - Gas Engine 1
06410665 Radiator Pressure Cap - Diesel Engine 1
SERVICE PROCEDURE
CAUTION:
Steam and very hot liquids from a hot cooling system can escape quickly and burn you badly when removing a radiator or surge tank pressure cap. cooling system is under pressure, and if you turn the radiator or surge tank cap (even slightly) steam and very hot liquid can come out at high speed. Never turn the cap when the engine and cooling system are hot. Wait for the engine and cooling system to cool if you ever have to move or remove a radiator surge tank pressure cap.
1. Check installed radiator or surge tank cap for correct number (RC33 or RC36) (Figure 1 shows pressure caps with correct numbers).
2. If radiator or surge tank pressure cap is not correct, install new pressure cap using the following procedure.
a. Park vehicle on a level surface.
b. Allow engine/cooling system to cool completely (cool to touch).
c. After engine and cooling system are cool, carefully remove surge tank pressure cap on vehicles with a diesel engine or radiator pressure cap on vehicles with a gasoline engine.
d. Slowly rotate radiator or surge tank pressure cap to the left until it first stops, about 1/4 turn.
e. Wait for pressure (indicated by hissing sound) to be released.
f. After all hissing stops, and all pressure is relieved, remove pressure cap completely by pressing down and turning the pressure cap to the left (counter clockwise) until stops.
3. Install correct radiator or surge tank pressure cap turning it to the right (clockwise) until it stops. Arrows on pressure caps RC33 and RC36 must be lined up with drain hose (see Figure 2).
4. Install Campaign Identification Label.
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
Submit a Product Campaign claim with the information indicated below:
* REPAIR FAILED PARTS LABOR LABOR OTHER PERFORMED PC PART NO. ALLOW CC-FC OP HOURS HOURS ------------------------------------------------------------------- Radiator/Surge 1 *** ** SK-00 V8520 0.2 0.1 Tank Cap Replaced
* Campaign Administrative Allowance.
** The "Parts Allowance" should be the sum total of the current GMSPO Dealer Net price plus 40% of the parts required for the repair.
*** Enter correct Part number as required for gas or diesel application.
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.
Dear Chevrolet Owner:
This notice is sent to inform you that Chevrolet Motor Division is conducting a recall campaign that includes your vehicle.
REASON FOR THIS RECALL
As a valued customer, your complete satisfaction with your Chevrolet truck is our goal. In keeping with this goal, we want to let you know that we have discovered a problem that could affect your vehicle and we want to take care of it at no charge to you.
A number of 1994 Chevrolet C3500HD Chassis Cab model vehicles, such as yours, may have been built with incorrect radiator or surge tank pressure caps. This condition could result in damage to the cooling system and engine components.
WHAT WE WILL DO
Because a new radiator or surge tank pressure cap can be easily installed, for your convenience we have included with this letter a new radiator or surge tank pressure cap and installation instructions. The instructions are on the reverse side of this letter. However, if you prefer, your Chevrolet truck dealer will install the radiator or surge tank pressure cap for you at no charge.
WHAT YOU SHOULD DO
Instructions for performing this service have been sent to your dealer and parts are available. If you do not wish to install the radiator or surge tank pressure cap sent to you, please contact your dealer to arrange a service date as soon as possible. You may ask your dealer if you wish to know how much time will be needed to schedule and process your vehicle. Also, you will need to provide the pressure cap sent to you to your dealer on your service date.
The enclosed owner reply card identifies your vehicle. If you perform this campaign repair yourself, please complete the card to indicate that the campaign has been completed and return the card to us. If you decide to have your dealer perform the repair for you, presentation of this card to your dealer will assist in making the necessary correction in the shortest possible time. However, if you have sold or traded your vehicle, please furnish us the complete name and address of the person you sold or traded the 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 continued satisfaction with our products.
Chevrolet Motor Division GENERAL MOTORS CORPORATION
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.
