Owner Notification & Change, Parts, Service Procedure & Campaign Label Information
OWNER NOTIFICATIONOwners will be notified of this campaign on their vehicles by Buick Motor Division (see copy of owner letter included with this bulletin).
CHANGE OF OWNER INFORMATION
Dealers are to use the Dealer Communication System (DCS) to provide Buick Motor Division with subsequent Buick owner information. By reporting a change of owner name or address of a vehicle in campaign status over the DCS, the need to send a CVAR for that vehicle is eliminated. Terminal input instructions are covered in the DCS Manual under Section 9, Page 9-J01A and B.
PARTS INFORMATION
Parts required to complete this campaign 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).
Part Number Description Quantity/Vehicle
10039419 Pulley - Water Pump 1 (As Required)
It is estimated that 40% will require inspection only and 60% will require a new water pump pulley. Order parts accordingly, based on involved vehicle listing.
SERVICE PROCEDURE
Inspection
1. Open hood.
2. Water pump pulleys are stamped (on front face) with a 4-character production manufacturing date code which is visible on pulley as installed on vehicle (see illustration). First two (2) characters are the date code. Last two (2) characters can be disregarded. Check date code to determine if replacement is required.
Character Position: 1 2 3 4
Sample date code: F 7 - -
Character Position #1 = Month of Production
A = January B = February C = March D = April E = May F = June G = July H = August J = September K = October L = November M = December
NOTICE: Letter I is not used.
Character Position #2 = Year of Pulley Production
7 = 1987 8 = 1988
Character Positions #3 and #4 = Disregard
If inspection indicates date code stamp F7, G7, H7, J7, K7 or L7, (i.e., pulleys built between June and November of 1987) replacement is required. Follow instructions under PULLEY REPLACEMENT described below.
If date code stamp is anything other than F7, G7, H7, J7, K7, or L7, replacement is NOT required. Install campaign identification label and close hood.
Pulley Replacement
3. Install fender covers and disconnect negative battery cable.
4. Remove serpentine belt. To remove belt, rotate tensioner as shown in Illustration.
5. Remove heater hose pipe clips to allow sufficient room to remove water pump pulley.
6. Remove water pump pulley using Pulley Remover J 25034-B or J 29785-A.
7. Install new water pump pulley using Pulley Installer J 25033-B or BT-7515.
8. Reinstall heater hose pipe clips.
9. Reinstall serpentine belt. To reinstall belt, rotate tensioner as shown in illustration. Belt routing is also shown in Illustration.
10. Install Campaign Identification Label.
11. Connect negative battery cable, remove fender covers, and close hood.
CAMPAIGN IDENTIFICATION LABEL
Each vehicle corrected in accordance with the instructions outlined in this bulletin will require a "Campaign Identification Label". Each label provides a space to include the five (5) digit dealer code of dealer performing the campaign service. This information may be inserted with a typewriter or a 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.