CAMPAIGN: AUTOMATIC TRANS. SHIFTER ASSEMBLY. Chevrolet Chevette 1985

For 1990-2009 cars

# CAMPAIGN: AUTOMATIC TRANS. SHIFTER ASSEMBLY

#### Subject: AUTOMATIC TRANSMISSION SHIFTER ASSEMBLY SUPPLEMENT "A"

#### Models: 1983-86 Chevette and Acadian Models Equipped With Automatic Transmission

#### TO: ALL GENERAL MOTORS DEALERS

This bulletin is being reissued to revise the service bulletin procedure and claim information sections of product campaign bulletin 8A07 issued April 1988. All copies of original bulletin 8AO7 should be destroyed.

#### DEFECT INVOLVED:

General Motors of Canada has determined that a defect which relates to motor vehicle safety exists in certain 1983-85 and some early production 1986 Chevette and Acadian model vehicles equipped with an automatic transmission. The automatic transmission shift lever button (detent) mechanism can, over time, wear to the point that the button on the shift lever no longer needs to be depressed to shift from "Drive" to "Reverse". A lever with this condition could be inadvertently "bumped" or moved from "Drive" or "Reverse" by the driver or a passenger while the vehicle is being driven. A sudden unexpected shifting of the transmission from "Drive" to "Reverse" could cause loss of vehicle control and a vehicle crash could occur.

To prevent this condition from occurring, the automatic transmission shift lever will be replaced with a newly designed lever on all involved vehicles.

#### VEHICLES INVOLVED:

Involved are certain 1983-1985 and some 1986 Chevette and Acadian models equipped with an automatic transmission, as follows:

Chevette 1983 SOP EOP 1984 SOP EOP 1985 SOP EOP 1986 SOP GA146061

Acadian 1983 SOP EOP 1984 SOP EOP 1985 SOP EOP 1986 SOP GA210323

All affected vehicles have been identified by the VIN listing provided to involved Dealers with this bulletin. Any Dealer not receiving a listing was not shipped any of the affected vehicles.

#### 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.

#### CAMPAIGN PROCEDURE:

Refer to Section 4 of the Service Policies and Procedures Manual for the detailed procedure on handling Product Campaigns. Dealers are requested to complete the campaign on all transfers as soon as possible.

#### OWNER NOTIFICATION:

All owners of record at the time of campaign release are shown on the attached computer listing and have been notified by first class mail from General Motors. The listings provided are for campaign activity only and should not be used for any other purpose.

#### PARTS INFORMATION:

As parts initially will be in short supply, we will ship 10% of requirements before opening io Dealer orders: Quantity/ Part Number Description Vehicle ----------- ----------- --------- 1984-85-86 Models ----------------- 14105608 Control Assembly - Auto Trans. 1

#### 1983 Models

14105608 Control Assembly - Auto Trans. 1 10028884 Handle 1 10028352 Retainer 1

#### PARTS AND LABOUR CLAIM INFORMATION:

Credit for the campaign work performed will be paid upon receipt of a properly completed campaign claim card, RAPID terminal or DCS transmission in accordance with the following:

Repair Code Description Time Allowance ----------- ------------ -------------- 2A Replace Automatic Transmission .9 Shifter Assembly - 84-85-86 Models

3A Replace Automatic Transmission .9 Shifter Assembly - 83 Models

Time allowance includes 0.1 hour for Dealer administrative detail associated with this campaign. Parts credit will be based on Dealer net plus 30% to cover parts handling.

#### SERVICE PROCEDURE:

Reference Figure 1.

1. Shift vehicle into "PARK", place ignition key in "LOCK" position, set parking brake and disconnect negative battery cable.

2. Remove shifter handle and console cover.

3. Disconnect wire harness.

4. Disconnect park-lock cable from shifter bracket and pin.

5. Remove shifter assembly floor pan bolts (4).

6. Raise vehicle on hoist.

7. Disconnect vertical shift link from horizontal link by removing clip and washer.

8. Lower vehicle and remove shifter from floor pan.

9. Transfer neutral start switch from removed control assembly to new assembly. When removing switch from old assembly have shift lever in "Neutral" notch of the detent plate. Install switch on new assembly using following steps:

A. Position transmission shifter assembly in "Neutral" notch of detent plate.

B. Align hole in contact carrier with hole in switch housing and insert 2.35 mm diameter gauge pin to a depth of approximately 15.0 mm.

C. Mount switch over studs, on detent plate with tang on shifter assembly installed into slot of switch. Tighten nuts to 1.6 - 2.2 N.m (1.2 - 1.6 lb. ft.) and remove gauge pin.

10. Transfer indicator needle and housing from removed assembly to new assembly. Torque nut 1.6 - 2.2 N.m (1.2 - 1.6 lb. ft.) and remove gauge pin.

11. Transfer J-nuts from removed assembly to new assembly.

12. Locate new shifter control assembly (with shift lever in "PARK" notch of detent plate) through floor pan and install floor pan bolts. Torque bolts 8 - 12 N.m (6 - 9 lb. ft.).

13. Raise vehicle on hoist.

14. Reconnect and adjust shift linkage as follows:

A. Place shift lever in "PARK" position.

B. Place transmission range selector in "PARK" position.

C. Adjust length of transmission horizontal rod (using horizontal link) until hole is aligned with pin on vertical link.

D. Slide horizontal rod onto vertical link pin (lubricate) and reattach using clip and washer.

#### NOTE: Transmission lever "PARK" detent is obtained by rotating transmission lever clockwise to maximum detent position.

15. Lower vehicle on hoist.

16. Reconnect and adjust park-lock cable as follows:

A. Turn ignition key to "LOCK" position.

B. Place shift lever in "PARK" position.

C. Raise snap cable connector lock button to up position.

D. Snap cable connector to shifter bracket.

E. Snap cable to park-lock lever pin.

F. Push cable connector nose forward toward connector to remove slack.

G. With no load applied to cable connector nose, snap cable connector lock button down.

H. Check operation of park-lock system.

a) If key can be removed in "NEUTRAL" position, place shift lever in "PARK", raise snap connector lock button to up position and repeat steps F & G.

b) If key cannot be removed in "PARK" position, raise snap connector lock button to up position and move cable connector nose rearward until key can be removed from ignition. Then snap connector lock button down.

17. Reconnect wire harness and battery.

18. Check neutral start switch for proper operation and readjust if necessary.

19. Install console cover and shifter handle.

#### NOTE: 1983 model year vehicles will require a new handle and retainer, see Parts Information.

20. Recheck shift and park-lock linkage for proper operation.

21. Install Campaign Identification Label.

#### INSTALLATION OF CAMPAIGN IDENTIFICATION LABEL

Clean surface of radiator upper mounting panel and apply a Campaign Identification Label. Make sure the correct campaign number is inserted on the label. This will indicate that the campaign has been completed.

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.