CAMPAIGN:TRANS. WILL NOT SHIFT FROM PARK POSITION
Subject: PRODUCT CAMPAIGN 93-C-56 - TRANSMISSION WILL NOT SHIFT FROM "PARK" POSITION
Model and Year: 1993 M/L VAN AND G VAN WITH CRUISE CONTROL (RPO K34)
To: All Chevrolet/Geo Dealers
General Motors has determined that certain 1993 M/L and G Vans equipped with cruise control (RPO K34) may experience a condition at temperatures below 320 Fahrenheit, where the transmission will not shift out of "PARK" with the brake pedal depressed.
To prevent this condition from occurring, dealers are to replace the cruise control vacuum release valve, and check and adjust the BTSI solenoid cable as needed.
Notice: The Brake Transmission Shift Interlock (BTSI) system is designed to prevent the automatic transmission from being shifted out of "PARK" unless the brake pedal is depressed.
VEHICLES INVOLVED
Involved are certain 1993 M/L and G Vans equipped with cruise control (RPO K34) and built within the following VIN breakpoints:
PLANT YEAR MODEL PLANT CODE FROM THROUGH -------------------------------------------------------------------- 1993 M/L Van Baltimore "B" PB100001 PB225275 1993 G Van Flint "F" PF300008 PF362809 1993 G Van Scarborough "4" P4100002 P4152033
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 involved dealers with the campaign bulletin. Owner name and address data furnished will enable dealers to follow-up with owners involved in this campaign.
These listings may contain owner names and addresses 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 this 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 Chevrolet Motor Division (see copy of owner letter included with this bulletin).
DEALER CAMPAIGN RESPONSIBILITY
All unsold new vehicles in dealers' possession and subject to this campaign must be held and inspected/repaired per the service procedure of this campaign bulletin before owners take possession of these vehicles.
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.
Owners of vehicles recently sold from your new vehicle inventory with no owner information indicated on the dealer listing, are to be contacted by the dealer, and arrangements made to make the required correction according to the instructions contained in this bulletin. This could be done by mailing to such owners a copy of the owners letter accompanying this bulletin. Campaign follow-up cards should not be used for this purpose, since the owner may not as yet have received the notification letter.
In summary, whenever a vehicle subject to this campaign enters your vehicle inventory, or is in your dealership for service in the future, please take the steps necessary to be sure the campaign correction has been made before selling or releasing the vehicle.
PARTS INFORMATION
25% of parts required for this campaign will be preshipped to involved dealers of record. This preshipment will occur the week of November 21, 1994. Parts received for recently transferred vehicles should be forwarded by the original dealer (with an accompanying phone call) to the dealer that received the transferred vehicle.
Additional parts required to complete this campaign are to be obtained from General Motors Service Parts Operations (GMSPO) . To ensure these parts will be obtained as soon as possible, they should be ordered from GMSPO on a "C.I.O." order with no special instruction code, but on an advise code (2).
Quantity/ Part Number Description Vehicle --------------------------------------------------- 15995799 Vacuum Release Valve 1
SERVICE PROCEDURE
1. Remove knee bolster from under dash (G-Van Only).
2. Disconnect electrical harness connector from valve (Figures 1 and 2, page 4).
3. Disconnect vacuum hose from vacuum release valve.
4. Remove vacuum release valve by turning it counter-clockwise.
5. Remove and retain retainer. Turn retainer counterclockwise to unseat it.
6. Install retainer removed in step 5. Turn retainer clockwise to seat it.
7. Install new vacuum release valve until it is seated in the retainer with the brake pedal in the depressed position.
8. Audible "clicks" can be heard as the threaded portion of the valve is pushed through the retainer toward the brake pedal.
9. Pull brake pedal fully rearward against the pedal stop until audible "click" sounds can no longer be heard.
10. Release and repeat step 9 to assure that no audible "click" sounds remain.
11. Connect vacuum hose.
12. Connect electrical connector.
13. Function check brake transmission shift interlock for proper operation:
A. Solenoid must lock gearshift lever bowl assembly whenever steering column is in "PARK" and when trying to shift from "PARK" without pressing brake pedal (solenoid is energized and extended when ignition is on).
B. Solenoid must release gearshift lever bowl assembly when pressure is applied to brake pedal (solenoid is de-energized).
14. Reinstall knee bolster (G-Van only).
15. If system is inoperative, BTSI solenoid cable adjustment is necessary. Perform "BTSI Solenoid Cable Adjustment Procedure" on page 5. If system is operating properly, proceed to step 16.
16. Install Campaign Identification Label.
BTSI Solenoid Cable Adjustment Procedure
1. Be certain parking brake is engaged and vehicle wheels are blocked.
2. Turn ignition lock cylinder to "OFF" position (NOT THE LOCK POSITION).
3. Shift column out of "PARK" position to "NEUTRAL".
4. A. G-Van Only (Figure 3, page 6):
Unlock adjuster lock, pull inner and outer adjuster bodies apart while holding cable at positions (A) and (B). Bowl lock will hit at gearshift bowl.
B. M/L Van Only (Figure 4, Page 6):
Remove solenoid protector. The lock button must be disengaged to allow cable movement. Push cable towards solenoid until bowl lock hits bowl and travel stops (DO NOT bow or bend inner cable wire between cable housing and cable fitting).
5. Let cable move back 1.0 to 2.0 mm.
6. Engage lock button.
7. Install solenoid protector (M-Van only).
8. Check system operation. Refer to step 13 of vacuum release valve replacement procedure on page 4 of this bulletin.
Notice: During inspection and adjustment of interlock solenoid assembly, solenoid will become hot.
9. Re-adjust if needed. If operating properly, proceed to step 10.
10. Reinstall knee bolster (G-Van only).
11. Install Campaign Identification Label.
CAMPAIGN IDENTIFICATION LABEL
Each vehicle corrected in accordance with the instructions outlined in this Product Campaign Bulletin will require a "Campaign Identification Label". Each label provides a space to include the campaign number and the five (5) digit dealer code of the dealer performing the campaign service. This information may be inserted with a typewriter or a ball point pen.
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. Additional "Campaign Identification Labels" can be obtained from DAC.
Apply "Campaign Identification Label" only on a clean, dry surface.
CLAIM INFORMATION
Submit a Product Campaign Claim with the information indicated below:
* FAILED PARTS LABOR LABOR OTHER REPAIR PC PART NO. ALLOW CC-FC OP HOURS HOURS ---------------------------------------------------------------------------- Replace Cruise Control 1 15995799 ** SK-00 V9430 0.4 0.1 Release Valve G-Van Replace Cruise Control Release Valve Adjust 1 15995799 ** SK-00 V9431 0.7 0.1 BTSI - G-Van Replace Cruise Control 1 15995799 ** SK-00 V9432 0. 3 0.1 Release Valve M/L Van Replace Cruise Control Release Valve & Adjust 1 15995799 ** SK-00 V9433 0.6 0.1 BTSI - M/L Van
* Campaign Administrative Allowance.
** The "Parts Allowance" should be the sum total of the current GMSPO Dealer Net price plus 30% of all parts required for the repair.
Refer to the Chevrolet Claims Processing Manual for details on Product Campaign Claim Submission.
Dear Chevrolet Van Owner:
As a valued customer, your complete satisfaction with your Chevrolet van is our goal. In keeping with this goal, we want to let you know that we have discovered a problem that could affect your vehicle and we want to take care of it at no charge to you.
REASON FOR THIS RECALL
General Motors has determined that certain Astro and Chevy vans may experience a condition at temperatures below 32 degrees Fahrenheit, where the transmission will not shift out of "PARK" with the brake pedal depressed. The Brake Transmission Shift Interlock (BTSI) system prevents the automatic transmission from being shifted out of "PARK" unless the brake pedal is depressed.
WHAT WE WILL DO
To prevent this condition from occurring, your dealer will replace the cruise control vacuum release valve, and check and adjust the BTSI solenoid cable as needed. This service will be performed for you at no charge.
WHAT YOU SHOULD DO
Please contact your Chevrolet dealer as soon as possible to arrange a service date and so the dealer may order the necessary parts for the repair. Instructions for performing this service have been sent to your dealer and parts are available. Please contact your dealer to arrange a service date as soon as possible. This procedure will take approximately 1 hour to complete. You may ask your dealer if you wish to know how much additional time will be needed to schedule and process your vehicle.
If you experience this condition prior to having the repair performed, please use the following procedure to by-pass the BTSI condition:
Review positions in ignition switch. Refer to your 1993 Owners Manual (Astro Van Owners Manual, pages 2-13 and 2-14; Chevy Van Owners Manual, pages 2-18 and 2-26).
1. Start engine.
2. Turn key to "OFF" (one click forward from "Lock" position).
3. Engage park brake and shift to neutral.
4. Start engine.
5. Release park brake and shift to desired gear.
The enclosed owner reply card identifies your vehicle. Presentation of this card to your dealer will assist in making the necessary correction in the shortest possible time. If you have sold or traded your vehicle, please let us know by completing the postage paid reply card and returning it to us.
We are sorry to cause you this inconvenience; however, we have taken this action in the interest of your continued satisfaction with our products.
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.
