CAMPAIGN: REAR ENG LIFT/COIL MOUNTING BRKT AND COIL WIRE. Buick Skyhawk 1987

For 1990-2009 cars

# CAMPAIGN: REAR ENG LIFT/COIL MOUNTING BRKT AND COIL WIRE

#### MODELS AFFECTED: 1987 BUICK SKYHAWK EQUIPPED WITH 2.OL (RPO LT2/LT3) L4 OHC ENGINE (VIN CODE K AND M)

General Motors has determined that some 1987 Buick Skyhawk models may experience fatigue fracture of the rear engine lift bracket. The ignition coil and coil bracket is mounted to the rear engine lift bracket. If the lift bracket fractures, the coil may become unsupported. This condition may ultimately result in engine misfire and possible loss of engine operation.

Additionally, high frequency magnetic coupling between the ignition coil and distributor coil magnetic pickup can result in extra pulses in the RPM reference signal. This condition may cause extended cold cranking/no start, pop back during cranking and/or occasional "Service Engine Soon" light with stored Code 42.

To protect against fatigue fracture of the rear engine lift bracket, the lift bracket will be inspected and, if necessary, replaced. Additionally, a pencil brace (service kit) will be installed as required on involved vehicles.

To prevent the possibility of magnetic coupling between the ignition coil and distributor coil magnetic pickup, a coil wire shield will be installed on all involved vehicles.

#### VEHICLES INVOLVED

Involved are certain 1987 Buick Skyhawk models equipped with 2.OL (RPO LT2/LT3) L4 OHC engine (VIN Code K and M) and built within the following vehicle breakpoints:

#### Model Year Plant From Through Service Required ---------- ----- ---- ------- ---------------- 1987 Leeds SOP HK422892 Lift Bracket Pencil Brace & Coil Wire Shield.

1987 Leeds HK422893 HK443705 Coil Wire Shield Only

#### DEALER MATERIAL

If your dealership has vehicles involved in this campaign, you will receive the following items:

- Listing of all vehicles involved in this Campaign shipped to your dealership.

- One (1) Campaign Identification Label for each vehicle.

Involved vehicles have been identified by Vehicle Identification Number computer listings. Computer listings contain the complete Vehicle Identification Number, owner name and address data and are furnished to the involved dealers with the campaign bulletin. Owner name and address data will enable dealers to follow up with owners involved in this campaign.

These listings may contain owner names and addressed obtained from State Motor Vehicle Registration records. The use of such motor vehicle registration data for any other purpose is a violation of law in several states. Accordingly, you are urged to limit the use of such listing to the follow up necessary to complete this campaign. Any dealer, not receiving a computer listing with the campaign bulletin has no involved vehicles currently assigned.

#### OWNER NOTIFICATION

Owners 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 Comunication System (D.C.S.) 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 D.C.S., the need to send a C.V.A.R. form for that vehicle is eliminated.

Terminal input instructions are covered in the D.C.S. Manual under Section 9, Page 9-JOlA and B.

#### DEALER CAMPAIGN RESPONSIBILITY

Dealers are to service all vehicles subject to this campaign at no charge to owners, regardless of mileage, 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 in the future, you should take the steps necessary to be sure the campaign correction has been made before reselling 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.

PARTS INFORMATION

Parts required to complete this campaign are to be obtained from General Motors Service Parts Operations (GMSPO). To ensure that these parts are obtained as soon as possible, they should be ordered on a C.I.O. order with no special instruction code, but on advise code (2).

PART NUMBER DESCRIPTION QUANTITY/VEHICLE ----------- ----------- ---------------- 10068556 Rear Engine Lift 1 (As Required) Bracket Service Kit*

* Service Kit Consists of:

(1) Part Number 11508279 Nut (1) Part Number 11508477 Bolt (2) Part Number 11508006 Nut (1) Part Number 10068555 Pencil Brace (1) Part Number 10068560 Instruction Sheet

14076453 Rear Engine Lift 1 (As Required) Bracket**

** It is estimated that only 11% of the vehicles requiring a pencil brace will also required lift bracket replacement. Order parts accordingly.

10103509 Coil Wire Shield 1 Service Kit***

*** Service Kit consists of:

(1) Part Number 10083160 Shield

(1) Part Number 10103508 Instruction Sheet

#### SERVICE PROCEDURE

1. Disconnect negative battery cable.

2. Remove air cleaner and inspect for pencil brace (See Figure 1). If pencil brace is NOT present, follow instructions for "PENCIL BRACE AND COIL WIRE SHIELD REQUIRED" otherwise follow instructions for "COIL SHIELD ONLY REQUIRED" as described below.

#### PENCIL BRACE AND COIL WIRE SHIELD REQUIRED

3. Disconnect electrical wiring from coil.

4. Remove upper existing coil bracket bolt (20mm long) and loosen lower existing coil bolts.

5. Remove two (2) lift bracket nuts and discard.

6. Remove lift bracket from engine and inspect for signs of a fatigue type crack appearing between the two (2) mounting stud holes. If a crack is present, replacement of lift bracket (Part Number 14076453) is required. Transfer lower coil bolts, coil and add coil wire shield to new bracket (See Figure 2).

7. Install new coil bracket bolt (top) (30mm long) and attach lift bracket (pencil) brace and nut from service kit (See Figure 1).

8. Position lift bracket, coil and coil wire shield on engine, and attach end of pencil brace to front lift bracket stud.

9. Install new lift bracket nuts (washer faced) to studs.

10. Torque coil bracket nut first to position pencil brace 20-30 N.m (15 - 22 lb. ft.).

11. With shield in position, ensure at least 2mm clearance to the distributor cap (See Figure 2, View A). Bend engine lift bracket if required for minimum clearance. SHIELD MUST NOT CONTACT DISTRIBUTOR CAP.

12. Torque lift bracket nuts 40-60 N.m (30-45 lb. ft.).

13. Torque lower coil bolts 20-30 N.m (15-22 lb. ft.).

14. Connect electrical wiring at coil. COIL WIRE NIPPLE MUST NOT CONTACT SHIELD.

15. Install air cleaner.

16. Connect negative battery cable.

17. Install campaign identification label.

#### COIL WIRE SHIELD ONLY REQUIRED

3. Remove upper existing coil bolt.

4. Loosen lower existing coil bolts.

5. Install shield (See Figure 2).

6. Reinstall existing upper coil bolt and hand tighten.

7. Hand tighten lower coil bolts.

8. With shield in position, ensure at least 2m clearance to the distributor cap (Figure 2, View A). Bend engine lift bracket if required for minimum clearance. SHIELD MUST NOT CONTACT DISTRIBUTOR CAP.

9. Torque upper and lower coil bolts 20-30 N.m (15-22 lb. ft.).

10. Connect electrical wiring at coil. COIL WIRE NIPPLE MUST NOT CONTACT SHIELD.

11. Install air cleaner.

12. Connect negative battery cable.

13. Install A Campaign Identification Label. --------------------------------------- Each vehicle modified in accordance with the instructions outlined in this procedure will require a Campaign Identification Label. Each label provides a space to include the campaign number, the five (5) digit dealer code of the dealer performing the campaign service, and the date vehicle was campaigned. This information may be inserted with a typewriter or ballpoint pen. When installing label, clean the surface of the radiator upper mounting support and apply the campaign label where it is readily visible.

#### DISPOSITION OF PARTS

Replaced parts must be held for disposition by Buick Zone or Branch contact personnel. Parts must have a claim tag attached showing the repair order and the VIN of the vehicle from which they were removed.

#### WARRANTY INFORMATION

List the one applicable Labor Operation

SUBLET PART FAILED PARTS FAILURE LABOR LABOR OTHER DEALER OPER. COUNT PART NO. ALLOW. CODE OP NO HOURS HOURS MTL TWG ---- ----- ------- ------ ---- ----- ------ ------ -------

- Install Pencil Brace and Coil Wire Shield 1 10068556 * 96 V4110 .5 **.l -- 1 10103509 *

- Replace Engine Lift Bracket, Install Pencil Brace & Coil Wire Shield 1 10068556 * 96 V4111 .5 **.l -- 1 14076453 * 1 10103509 *

- Install Coil Wire Shield Only 1 10103509 * 96 V4112 .3 **.l --

* List the current dealer price of parts, plus 30%. ** .1 hour for administration.

Dear Buick Owner:

This notice is being sent to you to information you that your Buick vehicle is involved in a recall campaign.

REASON FOR RECALL

General Motors has determined that some 1987 Buick Skyhawk models equipped with 2.OL L4 OHC engine may experience fatigue fracture of the rear engine lift bracket. The ignition coil and coil bracket is mounted to the rear engine lift bracket. If the lift bracket fractures, the coil may become unsupported. This may ultimately result in engine misfire and possible loss of engine operation.

Additionally, magnetic interference between the ignition coil and distributor may cause extended cold cranking/no start, pop back during cranking and/or occasional "Service Engine Soon" light.

SERVICE REQUIRED

To protect against fatigue fracture of the rear engine lift bracket, the lift bracket will be inspected and, if necessary, replaced. Additionally, a pencil brace (service kit) will be installed as required on involved vehicles.

To prevent the possibility of magnetic interference, a coil wire shield will be installed on all involved vehicles. The above described service(s) will be performed for you at no charge.

WHAT YOU SHOULD DO

Instructions for these services have been sent to your Buick dealer. Please contact your dealer to arrange a service date. The labor time to make this (these) modification(s) on your vehicle is approximately 15-30 minutes, depending on whether a lift bracket pencil brace is required on your vehicle. Please ask your dealer if you wish to know how much additional time will be needed to process your vehicle.

The enclosed owner reply card identifies your Buick vehicle. Presentation of this card to your dealer will assist in making the necessary modification in the shortest possible time. If you have sold or traded your vehicle, please let us know by completing the postage paid owner reply card and returning it to us. Should your dealer not schedule a service date within a reasonable time, you should contact the Buick Customer Assistance Department, Flint Home Office by calling 800-521-7300.

We are sorry to cause you this inconvenience; however, we have taken this action in the interest of your continued satisfaction with our products.

Buick Motor 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.