Procedure

THIS SERVICE PROCEDURE IS TO REPLACE THE 4TH CLUTCH HOUSING BOLT SHOWN ON PAGE 7A-17B-12, FIGURE 24, ITEM # 26 IN THE 1994 C/K UNIT REPAIR MANUAL.

1. Raise the vehicle and support it with safety stands.
2. Place a drain pan under the transmission oil pan.
3. Remove the seventeen oil pan bolts from the front and sides only, at first, to drain the oil. (Use a 10 mm socket. Loosen the rear oil pan bolts approximately 4 turns).
4. lightly tap the oil pan with a rubber mallet or pry down to allow the fluid to drain.
5. Remove the remaining oil pan bolts, oil pan, and gasket (which may be reused).
6. Remove the oil filter and multilip seal (the seal may be stuck in the case).
7. Disconnect the wire harness assembly from the five hookups.
8. Remove the six bolts using an 8 mm socket from the pressure manifold assembly (be certain the five 0-rings are attached to the pressure manifold assembly).
9. Remove the twenty-one bolts from the valve body assembly and manual detent spring assembly.
10. Remove the fluid level indicator stop, the lube pipe retainer, the lube pipe and clamp.
11. Remove the control valve assembly including the accumulator housing assembly, valve body gaskets, spacer plate, and accumulator gasket (make sure there is no gasket material left on the case surface).
12. Remove the eight check balls from the spacer plate noting the locations.
13. Remove the fourth clutch case bolt.

NOTICE:
IF THE FOURTH CLUTCH CASE BOLT IS BROKEN OR BREAKS DURING REMOVAL. REMOVE THE REMAINING PIECE OF THE BOLT WITH A SCREW EXTRACTOR.

14. INSTALL THE NEW FOURTH CLUTCH CASE BOLT AND TIGHTEN TO 23 NM (17 LB.FT.). Care should be taken not to over torque the bolt since slight over torquing will fracture the bolt.
15. Install the eight check balls in the proper location in the case fluid passages using TRANSJEL J-36850 or equivalent to hold them in place.
16. Install a new valve body to case gasket into the valve body assembly.
17. Install the complete valve body assembly onto the case using several bolts to hold it in place (make sure to attach the manual shaft to the detent lever and pin assembly).
18. Install the pressure switch manifold with 0-rings onto the valve body assembly.
19. Install the fluid indicator stop, the lube pipe and clamp and the manual detent spring assembly.
20. Install the remaining valve body bolts.
21. Tighten all valve body and pressure switch manifold bolts to 11 Nm (97 Lb.IN).
22. Connect the wire harness assembly to the five hookups.
23. Install the oil filter and multilip seal.
24. Install the transmission oil pan seal (reusable) and oil pan. Tighten the transmission oil pan bolts to 24 Nm (18 Lb.Ft).
25. Fill the transmission to the proper level with Dexron III Transmission Fluid. Do not overfill.
26. Check the oil pan gasket for leaks.
27. Install campaign label.

PARTS INFORMATION
Parts are currently available from GMSPO.

Part Number Description Quantity
12346143 Transmission Fluid - Dexron III 8 qts.
8684205 Valve Body to Case Gasket 1
8686124 Bolt - Case to Fourth Clutch 1

WARRANTY INFORMATION
Dealers should submit a warranty claim on each vehicle completed under this campaign.

LABOR
OPERATION * TIME NET TROUBLE
NUMBER DESCRIPTION ALLOWANCE AMOUNT CODE

V9460 Replace Fourth 1.3 ** 96
Clutch Bolt (Incl.
removal of broken
bolt)

* For dealer to receive "Administrative Time Allowance" associated with this campaign, add 0.1 hour to the Labor Operation Time Allowance.

**Transmission Fluid is a net item. Submit actual cost for oil plus 40% markup. Enter as Net Item Code M.

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 five (5) digit dealer code of the dealer performing the campaign service. This information may be inserted with a typewriter or 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.

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

ADMINISTRATIVE PROCEDURES
Procedures covering this campaign are outlined in Section V of your dealership's "GMC Truck Warranty Claims Processing Manual" # P9119 Rev. 2/94