CAMPAIGN: EGR/EPR SOLENOID ASSEMBLY REPLACE - DIESEL
MODELS: 1984 C/K/G 15-25 MODEL TRUCKS EQUIPPED WITH A 6.2L LIGHT DUTY EMISSION DIESEL ENGINE (RPO LH6) AND CALIFORNIA EMISSIONS (RPO YF5)
General Motors has determined that some 1984 C/K/G 15-25 Model Trucks equipped with a 6.2L Light Duty Emission Diesel Engine (RPO LH6) and California Emissions (RPO YF5) may emit pollutants in excess of Federal Emissions Standards.
The adhesive used to assemble the rubber vacuum manifold halves of the EGR/EPR Solenoid Assembly may deteriorate and result in vacuum leaks. Vacuum leakeage can render the EGR/EPR solenoid inoperative, which may result in failure to meet NOx emission standards.
VEHICLES INVOLVED
Involved are certain 1984 C/K/G 15-25 Model Trucks, equipped with a 6.2L Light Duty Emission Diesel Engine (RPO LH6) and California emissions (RPO YF5), built within the following VIN breakpoints.
Plant From Through ----- ---- -------
Flint EF516780 EF525852 Janesville EJ517791 EJ519743 Scarborough E4519064 E4523648
The specific vehicles involved in this campaign have been identified by Vehicle Identification Number Computer Listings. These listing are furnished to all involved dealers with the campaign bulletin.
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.
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 be sure 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 modification according to instructions contained in this bulletin.
If no owner's name and address were available to GMC Truck at the time of campaign initiation, the dealer will 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 General Motors Corporation 101 Union Street Plymouth, Michigan 48170
OWNER NOTIFICATION
Owners will be notified of this campaign on their vehicles by GMC Truck (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 campagin.
SERVICE PROCEDURE
Remove original EGR/EPR solenoid assembly and replace with P/N 1997134 (see Figure No. 1). Reference the 1984 GMC Light Duty Truck Service Manual X-8432, Page 6E9-19, Figure 6E9-34.
PARTS INFORMATION
Parts are to be obtained from the Warehousing and Distribution Division of General Motors (WDDGM). To ensure that these parts will be obtained as soon as possible, they should be ordered from WDDGM on a C.I.O. order with no special instruction code, but order under an advise code (2).
The following part is required for each vehicle involved.
Part Number Description Quantity Per Vehicle ----------- ----------- --------------------
1997134 EGR/EPR Solenoid Assembly 1
WARRANTY INFORMATION
Dealers should submit an accurately filled out Warranty Repair Order on each vehicle completed under this campaign.
Labor Operation *Time Trouble Number Description Allowance Code ------ ----------- --------- ----
R & R EGR/EPR 96 Solenoid Assembly
V2920 C/K Models 0.3 Hr.
V2921 G Models 0.5 Hr.
* For dealer to receive administration time allowance associated with this campaign, add 0.1 hr. to the Labor Operation Time allowance.
CAMPAIGN IDENTIFICATION LABEL
Each vehicle modified in accordance with the instructions outlined in this product campaign bulletin will requir a "Campaign Identification Label". Each label provides a space to incude the five (5) digit Dealer Code of the dealer performing the campaign service. This information may be inserted with a typewriter or ballpoint 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 Claims Processing Manual" #SD8519.
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.
