CAMPAIGN:HOOD OPENING INSPECT AND REPLACE LATCH

MODELS/YEARS: 1985-1986 CALAIS

CONDITION

General Motors has determined that a defect which relates to motor vehicle safety exists in all 1985 and some 1986 Oldsmobile Calais models. The secondary hood latch may be incorrectly aligned and/or may exhibit a binding condition of the latch pivot. Either of these conditions could prevent adequate engagement of the secondary hood latch to the front end support when the hood is in the closed position. In addition, the primary hood latch "pop-up" lever may be mispositioned. This could cause the hood to appear closed without being completely latched.

If the secondary hood latch is incorrectly aligned and/or is binding at the latch pivot, and the primary hood latch is not completely engaged to the hood, the hood could unexpectedly open while the vehicle is in motion. Should this occur, the hood may contact the vehicle windshield reducing the forward vision area of the driver, and a vehicle crash without prior warning could occur.

VEHICLES INVOLVED

All 1985 and certain 1986 Oldsmobile Calais models within the following Vehicle Identification Numbers:

Assembly Up To Model Year Plant Beginning And Including ---------- ----- --------- ------------- 1985 Lansing (C) Start of Production End of Production Lansing (M) Start of Production End of Production 1986 Lansing (C) Start of Production End of Production Lansing (M) Start of Production GM387687

DEALER ACTION

To prevent the possibility of this condition occurring on vehicles involved, dealers are to replace the secondary hood latch and inspect the primary hood latch pop-up lever for correct alignment and function and, if necessary, align the pop-up lever or replace the primary hood latch as described in the Service Procedure of this Bulletin.

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 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 inspection/modification according to instructions contained in this bulletin.

SERVICE PROCEDURE

A. Primary Hood Latch Inspection ----------------------------- 1. Open hood and hold open with hood prop rod.

2. Inspect for presence of the pop-up lever spring. Refer to Figure 1.

- If spring is missing, replace primary hood latch. Refer to Part C of this service procedure.

- If spring is in place and functioning (spring holds pop-up lever up when hood is open) proceed to step 3.

3. Disengage hood prop rod from hood and place prop rod in retaining clip.

4. Slowly lower hood to determine where the pop-up lever contacts the hood panel striker. Figure 2 illustrates proper pop-up lever to hood panel striker alignment.

- If pop-up lever requires alignment (does not contact the hood panel striker as shown in Figure 2), refer to Part B of this service procedure.

- If pop-up lever does not require alignment, proceed to Part D of this service procedure.

B. Primary Hood Latch Pop-up Lever Alignment ----------------------------------------- 1. With hood open, grasp the pop-up lever by hand and reposition the lever by pulling forward or pushing rearward as necessary so it will properly contact the hood panel striker when the hood is closed (refer to Figure 2).

- If pop-up lever cannot be properly aligned, the primary hood latch assembly must be replaced. Refer to Part C of this service procedure.

- If pop-up lever is now properly aligned, proceed to Part D of this procedure.

C. Primary Hood Latch Replacement ------------------------------ Removal ------- 1. Remove the five (5) black plastic push-in retaining clips that hold the R.H. close-out panel to the top of the headlamp and grille support.

2. Remove hood release cable from primary latch.

3. Remove two (2) 13 mm bolts attaching primary latch to front sheet metal support.

4. Remove primary latch.

Installation

1. Position new primary latch and install hood release cable to latch.

2. Install two (2) bolts attaching primary latch to front sheet metal support. Torque bolts to 27 N - m (20 Lbs. Ft.)

3. Install five (5) new push-in retaining clips (refer to parts information) to secure the R.H. close-out panel to the headlamp and grille support.

4. Proceed to Part D of this service procedure.

D. Secondary Hood Latch Replacement -------------------------------- 1. Hold hood open with hood prop rod.

2. Remove two (2) 10 mm bolts attaching secondary hood latch to hood.

3. Install new secondary latch and torque attaching bolts to 11 N-m (8 Lbs. Ft.).

4. Disengage hood prop rod from hood and place prop rod in retaining clip.

5. Slowly lower hood and observe where the secondary hood latch contacts front end support. Correct contact is shown in Figure 3.

- If latch does not contact front end support as shown in Figure 3, it will be necessary to manually align secondary latch. Refer to Part E of this service procedure.

- If secondary latch alignment is correct, proceed to Part F of this service procedure.

E. Secondary Hood Latch Alignment ------------------------------

IMPORTANT: If new secondary hood latch requires alignment it must be removed from the hood and aligned (bent) as described in the following procedure. DO NOT align secondary hood latch by bending while it is attached to the hood.

1. Visually determine the direction and amount of forward or rearward movement the secondary hood latch arm will require to correctly contact the center support.

2. Remove secondary hood latch.

3. Position latch in vise and bend latch arm at point B as necessary to obtain correct latch arm to center support contact as was determined in step 1 of Part E. Refer to Figure 4.

4. Re-install latch and torque attaching bolts to 11 N - m (8 Lbs. Ft.).

5. Slowly lower hood and observe where latch contacts front end support.

- If latch properly contacts front end support, proceed to Part F of this service procedure.

- If latch does not properly contact front end support, repeat Part E, steps 1 thru 5.

F. Verify Primary and Secondary Hood Latch Operation ------------------------------------------------- 1. Open, and then fully close hood. Pull hood release handle located inside car and verify proper operation of the primary latch pop-up lever and secondary latch.

- Primary Latch Pop-up Lever

Pop-up lever should raise hood enough to allow access to secondary latch finger pad.

- Secondary Latch

Secondary latch should be engaged in opening of the front end support. Pushing finger pad of secondary latch upward with fingers will allow hood to open.

2. After verifying proper operation of the primary latch pop-up lever and secondary latch, install campaign identification label, Part G.

G. Install Campaign Identification Label ------------------------------------- Each vehicle modified in accordance with the instructions outlined in this service 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. Install the label on the radiator baffle where it is readily visible.

PARTS INFORMATION

Parts for this campaign are to be obtained from WDDGM.

To ensure that parts will be obtained as soon as ponible, they should be ordered from WDDGM on a C.I.O. order with NO special instruction code, but order on an advise code (2).

Description Part Number Quanity Per Vehicle ----------- ----------- ------------------- Secondary Hood Latch 22535713 1

Primary Hood Latch 14085142 1 (If Required)

Close-out Panel Retainer 22524346 5 (If Primary Latch Is Replaced)

CLAIMS INFORMATION

Failure Labor Labor Description Code Operation Hours ----------- ---- --------- ----- Check Operation & Alignment of Primary Hood Latch Pop-up Lever, Align if Necessary, and Replace Secondary Hood Latch 96 V3570 .2

Check Operation & Alignment of Primary Hood Latch Pop-up Lever and Replace Primary Hood Latch. Replace Secondary Hood Latch 96 V3571 .3

Parts will be credited at dealor cost plus 30%.

.1 hour for clerical administration may be added to the above operation.

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.