Special Policy 99034 - Central Multiport Fuel Injection Failures in Calif Only. GMC Truck S15 Pickup - 4WD 1992

For 1990-2009 cars

# Special Policy 99034 - Central Multiport Fuel Injection Failures in Calif Only

Subject: | 99034 -- Special Policy Adjustment -- Central Multiport Fuel Injection (CMFI) Failures in California Only (YF5 Emission Equipped)

Models: | Certain 1992-95 S/T Trucks

| Certain 1992-95 M/L Trucks

| Equipped with 4.3L Engine (RPO L35-VIN Code W) and California Emission Equipped (RPO YF5)

### Condition

Some owners of 1992, 1993, 1994 and 1995 model year S/T and M/L trucks that are registered in the State of California equipped with 4.3L engine (RPO L35 and VIN Code W) and California emissions (RPO YF5), may experience a hard start condition, rough running engine, a Service Engine Soon light, misfire, no start, stalls or catalytic converter odor due to failure of the Central Multiport Fuel Injection (CMFI) fuel system. Fuels used in the State of California have been found to interact with the CMFI system to cause failures.

### Special Policy Adjustment

This special policy covers the CMFI failure condition described above for a period of ten (10) years or 100,000 miles (160,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership.

The repairs will be made at no charge to the owner. This special policy applies ONLY to repairs requiring CMFI system servicing. The customer should not be charged for performing a system check when determining that the CMFI system is not the cause of a customer complaint (labor operation T5530 is provided to submit claims for such system checks). Any additional necessary diagnosis and repairs that are not related to the CMFI condition are NOT covered by this special policy. The customer should be informed that any further service that is not covered by new vehicle warranty will not be covered by this policy.

### Vehicles Involved

Involved are certain 1992, 1993, 1994 and 1995 S/T and M/L model vehicles registered in the State of California equipped with 4.3L engine (RPO L35 and VIN Code W), California emissions (RPO YF5) and built within the following start of production to end of production VIN breakpoints:

Year | Division | Model | Plant | From | Through
--- | --- | --- | --- | --- | ---
1992 | Chevrolet | M/L | Baltimore | NB100005 | NB234001
1992 | Chevrolet | S/T | Pontiac West | N0100005 | N0164189
1992 | Chevrolet | S/T | Moraine | N2100046 | N2226380
1992 | Chevrolet | S/T | Shreveport | N8100006 | N8100012
1992 | GMC | M/L | Baltimore | NB500005 | NB551338
1992 | GMC | S/T | Pontiac West | N0500004 | N0820806
1992 | GMC | S/T | Moraine | N2500002 | N2539169
1992 | GMC | S/T | Shreveport | N8515462 | N8529232
1992 | Olds | T | Moraine | N2700001 | N2711870
1993 | Chevrolet | M/L | Baltimore | PB100001 | PB225266
1993 | Chevrolet | S/T | Pontiac West | P0100002 | P0196990
1993 | Chevrolet | S/T | Moraine | P2100001 | P2218436
1993 | Chevrolet | S/T | Shreveport | P8100003 | P8100009
1993 | GMC | M/L | Baltimore | PB500002 | PB552969
1993 | GMC | S/T | Pontiac West | P0500002 | P0528018
1993 | GMC | S/T | Moraine | P2500005 | P2543251
1993 | GMC | S/T | Shreveport | P8500001 | P8524622
1993 | Olds | T | Moraine | P2700001 | P2709695
1994 | Chevrolet | M/L | Baltimore | RB100000 | RB248996
1994 | Chevrolet | S/T | Pontiac West | R0100001 | R1084858
1994 | Chevrolet | S/T | Moraine | R2100001 | R2179415
1994 | Chevrolet | S/T | Shreveport | R8100009 | R8242802
1994 | Chevrolet | S/T | Linden | RK100003 | RK183995
1994 | GMC | M/L | Baltimore | RB500000 | RB558700
1994 | GMC | S/T | Pontiac West | R0500001 | R0535325
1994 | GMC | S/T | Moraine | R2500001 | R2527917
1994 | GMC | S/T | Shreveport | R8500040 | R8533970
1994 | GMC | S/T | Linden | RK500002 | RK525999
1994 | Olds | T | Moraine | R2700001 | R2707710
1994 | Olds | T | Pontiac West | R0700001 | R0709971
1995 | Chevrolet | M/L | Baltimore | SB100001 | SB274040
1995 | Chevrolet | S/T | Linden | SK100001 | SK263006
1995 | Chevrolet | S/T | Moraine | S2100001 | S2266695
1995 | Chevrolet | S/T | Shreveport | S8100001 | S8266202
1995 | GMC | M/L | Baltimore | SB500001 | SB566582
1995 | GMC | S/T | Linden | SK500001 | SK545839
1995 | GMC | S/T | Moraine | S2500001 | S2559899
1995 | GMC | S/T | Shreveport | S8500006 | S8541076

### Parts Information

Additional parts, if required, are to be obtained from General Motors Service Parts Operations (GMSPO). Please refer to your "involved vehicles listing" prior to ordering parts. Normal orders should be placed on a DRO=Daily Replenishment Order. In an emergency, parts should be ordered on a CSO=Customer Special Order.

Part Number | Description | Qty/ Vehicle
--- | --- | ---
17113384 | Assembly-Central Port Injection | 1
10105939 | Gasket-Upper Intake | 1 If Required

### Customer Notification

Customers will be notified of this special policy on their vehicles by General Motors (see copy of typical customer letter included with this bulletin -- actual divisional letter may vary slightly).

### Service Procedure

#### System Check

Use strategy-based diagnoses listed in the front of the Driveability and Emissions section of the Service Manual. If the CMFI system is operating properly, inform the customer that their vehicle does not have the condition listed in the owner letter. If poor driveability conditions persist, inform the customer that any further diagnosis and repairs will be at their expense if the vehicle is outside the parameters of the New Vehicle Warranty.

#### Correction

If normal service manual diagnosis indicates the CMFI is the cause of the customer complaint, refer to the appropriate Service Manual to replace the CMFI fuel assembly.

### Claim Information

For vehicles repaired under warranty, submit a claim with the information indicated below.

Repair Performed | Part Count | Part No. | Parts Allow | CC-FC | Labor Op | Labor Hours
--- | --- | --- | --- | --- | --- | ---
System Check - No CMFI Repair Needed | NA | NA | NA | MK-95 | T5530 | 0.0-0.3 hr
Repair/Install New CMFI Assembly: | -- | 17113384 | * | MK-95 | T5531 | --
S/T Truck 1992-93 | -- | -- | -- | -- | -- | 1.3 hrs
S/T Truck 1994-95 | -- | -- | -- | -- | -- | 0.8 hr
M/L Truck 1992-95 | -- | -- | -- | -- | -- | 1.4 hrs
M/L with A/C Add: | -- | -- | -- | -- | -- | 0.9 hr
* -- The "Parts Allowance" should be the sum total of the current GMSPO Dealer Net price plus 40% (for 1994 and 1995 vehicles) or 30% (for 1992 and 1993 vehicles) for CMFI parts and gasket needed to complete the repair.

### Reimbursement

CUSTOMERS FROM THE STATE OF CALIFORNIA MUST SUBMIT REQUESTS FOR REIMBURSEMENT DIRECTLY TO CHEVROLET, PONTIAC-GMC OR OLDSMOBILE PER INSTRUCTIONS IN THE OWNER LETTER.

These customer requests for reimbursement are for any previously paid repairs to, or replacement of, the Central Multiport Fuel Injection (CMFI) system, regardless of miles. The requests are to be submitted within two (2) years of the date on which the repair was paid, or within the ninety (90) day reimbursement period, ending December 30, 1999, following the receipt of this letter, whichever is later.

When a customer requests reimbursement, they must provide the following:

• | Proof of ownership at the time of repair

• | Original paid receipt confirming the amount of unreimbursed repair expense(s), a description of the repair, the date repaired, and the person or entity performing the repair.

If the work was done by someone other than a GM dealership, the amount of reimbursement will generally be limited to the amount that the repair would have cost GM to have it completed by a GM dealership.

September, 1999

Dear<<Division(s)>> Customer:

As the owner of a 1992, 1993, 1994 and 1995 model year S/T or M/L truck that is registered in the State of California, equipped with 4.3L V6 engine and California emissions, your satisfaction with our product is very important to us.

### Condition

This letter is intended to make you aware that some 1992, 1993, 1994 and 1995 model year S/T and M/L trucks that are registered in the State of California, equipped with 4.3L V6 engine and California emissions, may experience a hard start condition, rough running engine, a Service Engine Soon light, misfire, no start, stalls or catalytic converter odor due to failure of the Central Multiport Fuel Injection (CMFI) system.

### Action

To address the above-mentioned condition, General Motors is providing special warranty coverage to owners of applicable vehicles registered in the State of California. If the CMFI system failure condition occurs on your 1992, 1993, 1994 or 1995 S/T or M/L truck within 10 years of the date your vehicle was originally placed in service or 100,000 miles, whichever occurs first, the condition will be repaired for you at no charge. Other conditions that may cause similar or different driveability complaints, or cause a Malfunction Indicator Light illumination, that are not a result of CMFI system failures are NOT covered by this special policy. Any repairs made outside the normal warranty coverage due to other conditions would be your responsibility, if you elect to have your dealer provide this service.

This is not a recall campaign. Do not take your vehicle to your <Division> dealer as a result of this letter unless you believe that your vehicle has the condition as described above.

### Reimbursement

If you have already paid for some or all of the cost to have the CMFI fuel system repaired or replaced, regardless of miles, you should write to <Divisional specific address> to seek reimbursement. Please provide your original paid receipts or invoices verifying the repair, the amount charged, proof of payment, the date of payment of those charges and proof of ownership of the vehicle at the time of the repair. This information must be provided within two (2) years of the date on which you paid for the repair, or within the ninety (90) day reimbursement period, ending December 30, 1999, following the receipt of this letter, whichever is later.

If the work was done by someone other than a GM dealership, the amount of reimbursement will generally be limited to the amount that the repair would have cost GM to have it completed by a GM dealership.

### Contacting Your Dealer

Repairs and adjustments qualifying under this special coverage must be performed by a <Division> dealer. You may want to call the service department at the dealer to find out how long they will need to have your vehicle so that you may schedule the appointment at a time that is convenient for you. This will also allow your dealer to order parts if they are not already in stock. Keep this letter with your other important glovebox literature for future reference.

Should your dealer be unable to schedule a service date within a reasonable amount of time, you should contact the appropriate Customer Assistance/Relations Center at the number listed below:

Division | Number | Deaf, Hearing Impaired, or Speech Impaired*
--- | --- | ---
Chevrolet | 1-800-222-1020 | 1-800-833-2438
GMC | 1-800-462-8782 | 1-800-462-8583
Oldsmobile | 1-800-442-6537 | 1-800-833-6537
* Utilizes Telecommunication Devices for the Deaf/Text Telephones (TDD/TTY)

We are sorry for any inconvenience you may experience; however we have taken this action in the interest of your continued satisfaction with our products.

<<Division(s)>>

General Motors Corporation

Enclosure