CAMPAIGN: ENHANCED MEM-CAL (INSTALL ACCORDING TO VEH TYPE
Subject: ENHANCED MEM-CAL
Models: 1993 Chevrolet and GMC Trucks With 5.OL Engines (L03) And Four Speed Automatic Transmission (M30)
General Motors of Canada Limited has installed an enhanced Memory Calibration in 1993 Chevrolet and GMC Trucks equipped with 5.0L engines and four speed automatic transmissions built after July 17, 1992. Dealers are to install the enhanced Mem-Cal that has been provided according to the vehicle type and axle ratio prior to delivery. If a vehicle has been sold, contact the owner to make this correction.
VEHICLES INVOLVED:
Involved are certain 1993 Chevrolet and GMC Trucks identified by the following VIN'S:
A) Requiring Mem-Cal broadcast code BDFK (old code BBLK):
2GCEC19H9P1100088 2GCEC19H5P1102159 2GCEC19H2P1100112 2GCEC19H2P1102202 2GCFC29H7P1100133 2GCEC19H5P1102419 2GCEC19H1P1100201 2GCFC29H5P1102446 2GCEK19HXP1100359 2GCEC19H2P1102653 2GCEC19H8P1100373 2GCEC19H1P1102692 2GCEC19H5P1100377 2GCEC19H0P1102781 2GCEK19H3P1100462 2GCEC19H4P1102797 2GCEC19H5P1100508 2GCFC29H4P1102857 2GCEC19H3P1100538 2GTEC19HXP1500015 2GCEC19H6P1100548 2GTEK19H3P1500036 2GCEK19H0P1100564 2GTEK19H5P1500037 2GCEC19H5P1100587 2GTFC29H8P1500041 2GCEK19H8P1100649 2GTEK19H1P1500150 2GCEC19H3P1100653 2GTEC19H5P1500164 2GCEC19H9P1100821 2GTEC19H1P1500341 2GCEC19H5P1100895 2GTEC19H5P1500455 2GCEK19H6P1100987 2GTEK19H0P1500530 2GCEC19H2P1101065 2GTEK19H8P1500551 2GCEK19HXP1101110 2GTEC19H9P1500555 2GCEC19H8P1101118 2GTEK19H4P1500627 2GCEK19H3P1101417 2GTEK19H8P1500663 2GCEK19H0P1101438 2GTEC19H7P1500697 2GCEC19H3P1101494 2GTEC19H3P1500728 2GCEK19H0P1101519 2GTEK19H7P1500797 2GCEK19H9P1101647 2GTEK19H3P1500831 2GCEK19H7P1101792 2GTEK19H5P1500880 2GCEK19H1P1101934 2GTEC19H6P1500965 2GCEK19HXP1102032 2GTEK19H2P1500996 2GCEC19HXP1102075 2GTEC19H0P1501013 2GCEC19H2P1102121 2GTEC19HXP1501018 2GCEK19H4P1102155 2GTEK19H3P1501106
B) Requiring Mem-Cal broadcast code BDFL (old code BBLL):
2GCEC19H5P1100654 2GCEK19H6P1101735 2GCEK19H8P1101459 2GCEC19H9P1102049 2GCEK19H3P1101594 2GTEK19H0P1500706
C) Requiring Mem-Cal broadcast code BDFM (old code BBLM):
2GCFC29H2P1100055 2GTFC29H7P1500256
All affected vehicles have been identified by the VIN listing provided to involved dealers with this bulletin. Any dealer not receiving a listing was not shipped any of the affected vehicles.
DEALER CAMPAIGN RESPONSIBILITY:
Dealers are to perform this campaign on all involved vehicles at no charge to owners, regardless of kilometres traveled, 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, you are to ensure the campaign correction has been made before selling 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.
CAMPAIGN PROCEDURE:
Refer to Section 4 of the Service Policies and Procedures Manual for the detailed procedure on handling Product Campaigns. Dealers are requested to complete the campaign on all transfers as soon as possible.
OWNER NOTIFICATION:
NO OWNER NOTIFICATION WILL BE SENT AS THE INVOLVED VEHICLES SHOULD BE IN DEALER INVENTORY. If any units have been delivered or dealer transferred, please contact the respective purchaser or dealer to have the campaign repair performed.
PARTS INFORMATION:
Parts required to complete this campaign are being shipped direct to involved dealers on a no charge basis. The correct Mem-Cal for each application is identified by a four letter broadcast code as listed for the vehicles involved.
PARTS AND LABOUR CLAIM INFORMATION:
Credit for the campaign work performed will be paid upon receipt of a properly completed campaign claim card or DCS transmission in accordance with the following:
Repair Code Description Time Allowance ----------- --------------- --------------- 2A Replace Mem-Cal .4
Time allowance includes 0.1 hour for dealer administrative detail associated with this campaign. Repair code 2A includes $10.83 which represents 30% of die Dealer Net price for the Mem-Cal.
SERVICE PROCEDURE:
1. Disconnect negative battery cable.
2. Disconnect connectors from ECM/PCM.
3. Remove ECM/PCM mounting hardware.
4. Remove ECM/PCM from passenger compartment.
5. Remove ECM/PCM access cover.
6. Remove Mem-Cal -IMPORTANT! Using two fingers, push both retaining clips back away from the Mem-Cal. At the same time, grasp it at both ends and lift it up out of the socket Use of unapproved Mem-Cal removal methods may cause damage to the ECM/PCM socket.
7. Install new Mem-Cal - IMPORTANT! Press only on the ends of the Mem-Cal. Small notches in the Mem-Cal must be aligned with the small notches in the Mem-Cal socket. Gently press down on the ends of the Mem-Cal until clips are against the side of the Mem- Cal. Press inward on the clips until they snap into place. Listen for the click.
8. Install access cover on ECM/PCM.
9. Connect connectors to ECM/PCM.
10. Make functional check
A. Turn ignition on.
B. With cavities A & B shorted at ALDL connector, Code 12 should flash four times (if no other codes are present). This indicates the Mem-Cal is installed properly, and the ECM/PCM functioning.
11. Install ECM/PCM in vehicle using mounting hardware removed in step 3. (1.6 - 2.2 N.m).
12. Connect negative battery cable (10.2 - 20.0 N.m).
13. Install Campaign Identification Label.
INSTALLATION OF CAMPAIGN IDENTIFICATION LABEL
Clean surface of radiator upper mounting panel and apply a Campaign Identification Label. Make sure the correct campaign number is inserted on the label. This will indicate that the campaign has been completed.
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.
