CAMPAIGN:INTAKE MANIFOLD GASKET. Oldsmobile Cutlass Ciera 1993

SUBJECT: INTAKE MANIFOLD GASKET

YEAR: 1993

MODEL: 1993 CUTLASS CIERA WITH THE 2.2L (VIN 4) ENGINE

CONDITION

General Motors has determined that certain 1993 Oldsmobile Cutlass Ciera model vehicles equipped with the 2.2L (RPO LN2, VIN 4) engine may have been assembled with an intake manifold gasket (between the intake manifold and the cylinder head) that can move out of position due to engine thermal cycling. This may result in rough idling, check engine lamp coming on, stalling and/or hesitation on acceleration.

To prevent this condition from occurring, retailers are to replace the intake manifold gasket on involved vehicles.

VEHICLES INVOLVED

Certain 1993 Cutlass Ciera model vehicles equipped with the 2.2L (RPO LN2, VIN 4) engine within the following VIN breakpoints:

Year Model Name Engine VIN Code VIN Beginning Through & Including ------------------------------------------------------------------------- 1993 Cutlass Ciera 4 P6334843 P6452521

All vehicles which are listed on the retailers campaign printout will require correction as outlined in the service procedure section of this bulletin. Any vehicles recently repaired using the correct Lower Intake Manifold Gasket (P.N. 24574409), verified by a repair order, may be labeled and returned to the customer without further repair.

Should a question arise concerning the campaign involvement of a specific vehicle(s) within the breakpoints listed above, retailers should access the VISS (Vehicle Information Service System) for verification.

OWNER NOTIFICATION

Owners will be notified of this recall on their vehicles by Oldsmobile Division (see copy of the owner lefter included with this bulletin).

RETAILER CAMPAIGN RESPONSIBILITY

To prevent this condition from occurring, retailers are to replace the lower intake manifold gasket on involved vehicles.

Retailers are to service all vehicles involved in this campaign, at no charge to owners, regardless of mileage, age of vehicle, or ownership.

Whenever a vehicle subject to this campaign is taken into your new or used car inventory, or if it is in your retail facility for service, you are to ensure the campaign correction has been made before selling or releasing the vehicle.

Retailers are to contact owners of vehicles recently sold from your new or used vehicle inventory and arrange for the campaign correction to be performed.

SERVICE PROCEDURE

NOTICE: If a vehicle has been repaired for this condition and the repair order indicates that the improved gasket (P/N 24574409) has already been installed, this procedure is not required. Proceed to step 33.

1. Write down the owners preset memory functions which will be lost when the battery is disconnected for reference later when resetting the memory functions. If a memory retention device is plugged into the cigarette lighter socket (such as "Memor-Eze", Snap-On Tool YA960, or Kent Moore Tools KS295A or BT 9027), this step can be omitted. Then, with the ignition in the "off" position, disconnect the negative battery cable.

2. Relieve fuel pressure according to service manual section 6E3-C2.

3. Remove air cleaner duct assembly and top half of the air cleaner.

4. Remove torque strut from engine and rotate engine forward.

5. Disconnect vacuum lines from the fuel pressure regulator, EGR, PCV, and power brake booster.

6. Position transaxle fill tube and indicator assembly aside. Refer to service manual section 7A.

7. Remove throttle modulator cover, throttle cables and throttle cable bracket. Refer to service manual section 6C.

8. Disconnect secondary ignition wiring from the spark plugs and reposition harness.

9. Route power steering lines under the air inlet blower case.

10. Loosen the power steering pencil brace bolt at the power steering pump and remove the power steering pencil brace bolt at the intake manifold. Position the brace aside (do not remove from the vehicle.)

11. Loosen the fuel line retainer under the intake maniiold. Refer to service manual section 6C.

12. Remove the fuel feed hose retainer from the intake manifold. Refer to service manual section 6C.

13. Disconnect both fuel lines from the intake manifold. Refer to service manual section 6C.

14. Remove the lower intake manifold nuts.

15. Remove the intake manifold assembly from the cylinder head.

Note: Mating surfaces must be clean and free of any foreign material, grease or dirt.

Note: Do not sand or rough up either of the two mating surfaces prior to the installation of the new gasket.

16. Clean and inspect the intake manifold, and cylinder head mating surfaces.

Note: Install the intake manifold gasket against the cylinder head before installing the intake manifold or gasket damage may occur.

Note: Do not use any additional materials or sealants to improve the gaskets sealing ability.

17. Install the intake gasket and manifold.

18. Tighten the intake manifold fasteners in sequence to the specification shown in service manual section 6A2.

19. Connect both fuel lines to the intake manifold. Refer to service manual section 6C.

20. Install the fuel feed hose retainer to the intake manifold. Refer to service manual section 6C.

21. Route the fuel line under the fuel line retainer and tighten retainer. Refer to service manual section 6C.

22. Route the wiring harness to its original location. Refer to service manual section 8A.

23. Position the power steering pump pencil brace. Install and tighten the power steering pump pencil brace to the intake manifold bolt. Tighten the power steering brace to the pump bolt. Refer to service manual section 3B.

24. Route power steering lines to the correct position.

25. Route and connect secondary ignition wiring.

26. Install throttle cable bracket, throttle cables, and throttle modulator cover. Refer to service manual section 6C.

27. Position transaxle fill tube and indicator assembly. Refer to service manual section 7A.

28. Connect vacuum lines to the fuel pressure regulator, EGR, PCV, and power brake booster.

29. Install torque strut to engine.

30. Install air cleaner duct assembly and top half of the air cleaner.

31. Reconnect the negative battery cable. If a memory retention device was not used, please reset (to the extent possible) all devices that lost their memory after the battery was disconnected.

32. Cycle ignition "ON" and "OFF" twice, waiting ten seconds between cycles, then check for fuel leaks. If leaks are detected, repair as necessary.

33. Install a Campaign Identification Label.

CAMPAIGN IDENTIFICATION LABEL

Each label provides space to print the campaign number, and the five (5) digit retailer code of the retailer performing the campaign. Insert this information with a typewriter or ball-point pen. When installing label, clean and dry the surface of the radiator support tie bar and apply the campaign label where it is readily visible.

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 the "Campaign Identification Label" on a clean, dry surface.

PARTS INFORMATION

To ensure that any additional parts your retail facility may require are obtained as soon as possible, order them from GM Service Parts Operations (GMSPO) on a C.I.O. order, with NO special instruction code, but order on an advise code (2).

Description Part Number Quantity/Vehicle ------------------------------------------------------------------- Lower Intake Manifold Gasket *24574409 1

*Beginning on 12/16/93, GMSPO will preship intake manifold gaskets to each retailer with involved vehicles equal to 35% of the number of vehicles to be repaired. These gaskets will be charged to the retailers open account.

WARRANTY CLAIM INFORMATION

Submit claims using the "V" labor-op below for each involved vehicle:

Total Failure Labor Labor Straight Operation Parts Code Operation Hours Time ---------------------------------------------------------------------- Replace Lower Intake Manifold Gasket 1 96 V8373 1.3 0.1

Vehicle previously repaired with improved gasket (P.N. 24574409) confirmed by repair order 96 V8374 .2 .1

*Administration Allowance: 0.1 hour for clerical administration may be applied for in the Straight Time (ST) column.

Parts Allowance. Current retailer price, plus 30% allowance for handling.

OWNER LETTER

This is a representative owner letter.

Dear Oldsmobile Cutlass Ciera Owner:

Records available to Oldsmobile indicate that you are the owner of a 1993 Cutlass Ciera.

REASON FOR RECALL

WHAT WE WILL DO

To prevent this condition from occurring, retailers are to replace the intake manifold gasket on involved vehicles.

WHAT YOU SHOULD DO

Please contact your Oldsmobile retailer as soon as possible to arrange a service date. Instructions for making this correction have been sent to your retailer. Please ask your retailer if you wish an estimate of the total time needed to schedule, process and return your vehicle.

Please give the enclosed owner reply card to your retailer to identify your vehicle and the condition which needs correcting. If you no longer have this vehicle, please let us know by completing the card and mailing it back to us. The postage has been prepaid for you.

Please note that this is NOT a safety recall. However, we are asking you to have this free service performed on your vehicle so that you may continue your satisfaction with our products. Also, we apologize for any inconvenience we may have caused you.

OLDSMOBILE 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.