Canadian Version - Service Procedure
** CANADIAN VERSION **PRODUCT SAFETY CAMPAIGN
SUBJECT:
CAMPAIGN 97020 - ELECTRONIC BRAKE CONTROL MODULE OR ELECTRONIC BRAKE AND TRACTION CONTROL MODULE (EBCM/EBTCM)
MODELS:
1997 BUICK PARK AVENUE/ULTRA; CADILLAC DEVILLE, DEVILLE CONCOURS, DEVILLE D'ELEGANCE, ELDORADO, ELDORADO TOURING COUPE (ETC), SEVILLE LUXURY SEDAN (SLS), SEVILLE TOURING SEDAN (STS).
THIS BULLETIN CANCELS AND REPLACES BULLETIN 97020 ISSUED MAY, 1997. THE VEHICLES INVOLVED SECTION HAS BEEN EXPANDED AND THE PARTS INFORMATION SECTION HAS BEEN REVISED.
DEFECT INVOLVED
General Motors of Canada Limited has decided that a defect which relates to motor vehicle safety exists in certain 1997 Buick Park Avenue/Ultra; Cadillac DeVille, DeVille d'Elegance, Deville Concours, Eldorado, Eldorado Touring Coupe (ETC), Seville Luxury Sedan (SLS), and Seville Touring Sedan (STS) model vehicles. These vehicles may exhibit a condition in which the Electronic Brake Control Module or the Electronic Brake and Traction Control Module (EBCM/EBTCM) may cause the Antilock Brake System (ABS) to cycle during a non-ABS brake application. This may result in an increase in vehicle stopping distance. If this condition were to occur in a situation where stopping distances were minimal, a vehicle crash could occur without prior warning. To prevent the possibility of this condition occurring, dealers will replace the electronic Brake Control Module or the electronic Brake and Traction Control Module.
VEHICLES INVOLVED
Involved are certain 1997 Buick Park Avenue/Ultra; Cadillac DeVille, DeVille d'Elegance, Deville Concours, Eldorado, Eldorado Touring Coupe (ETC), Seville Luxury Sedan (SLS), and Seville Touring Sedan (STS) model vehicles built within the following VIN breakpoints:
PLANT YEAR DIVISION MODEL PLANT CODE FROM THROUGH
1997 Buick Park Avenue/Ultra Orion "4" V4600001 V4646816 1997 Cadillac DeVille D/Ham "U" VU200001 VU280134 1997 Cadillac Eldorado D/Ham "U" VU600001 VU615624 1997 Cadillac Seville D/Ham "U" VU800061 VU832079 1997 Cadillac Hearse D/Ham "U" VU500001 VU500166 1997 Cadillac Limo D/Ham "U" VU700001 VU700149.
NOTICE:
THE VEHICLES SHOWN ARE ALSO INVOLVED IN THE CAMPAIGN. WARRANTY RECORDS INDICATE THEY WERE PREVIOUSLY REPAIRED UNDER WARRANTY WITH AN OLD DESIGN EBCM/EBTCM.
NOTE:
PLEASE CHECK DCS SCREEN 445 OR YOUR V.I.N. LISTING BEFORE PERFORMING CAMPAIGN TO ENSURE THAT THE VEHICLE IS AFFECTED. ONLY AFFECTED VIN'S WILL BE PAID.
Involved vehicles have been identified by Vehicle Identification Number. Computer listings containing the complete Vehicle Identification Number, customer name and address data have been prepared, and are being furnished to involved dealers with the campaign bulletin. The customer name and address data furnished will enable dealers to follow-up with customers involved in this campaign. Any dealer not receiving a computer listing with the campaign bulletin has no additional involved vehicles currently assigned AND SHOULD NOT ORDER CAMPAIGN PARTS FOR USE AS SHELF STOCK.
The involved vehicle computer listing will identify the part required for repair by Subgroup Identification Code for each vehicle. Please only order the necessary parts to complete vehicles with confirmed appointments.
PARTS INFORMATION
Parts required to complete this campaign are to be obtained from General Motors Service Parts Operations (GMSPO). Please refer to your "involved vehicles listing" prior to ordering requirements.
OPTION RPO DESCRIPTION (BUICK PARK AVENUE ONLY)
Y67 = TIRE INFLATION MONITOR; Part of SE Package NW9 = TRACTION CONTROL SYSTEM; Part of Instrument Package (UB7) NV8 = MAGNASTEER; Part of Grand Touring Package (Y56)
CUSTOMER NOTIFICATION
All customers of record at the time of campaign release are shown on the computer listing and have been notified by first class mail from General Motors (see copy of customer letter shown in 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 customers take possession of these vehicles.
Dealers are to service all vehicles subject to this campaign at no charge to customers, regardless of mileage, age of vehicle, or ownership, from this time forward.
Customers who have recently purchased vehicles sold from your vehicle inventory, and for which there is no customer information indicated on the dealer listing, are to be contacted by the dealer.
Arrangements are to be made to make the required correction according to the instructions contained in this bulletin. This could be done by mailing to such customers a copy of the appropriate customer letter shown in this bulletin.
In summary, whenever a vehicle subject to this campaign enters your vehicle inventory, or is in your dealership for service in the future, you must take the steps necessary to be sure the campaign correction has been made before selling or releasing the vehicle.
SERVICE PROCEDURE CADILLAC
1. Position vehicle on hoist and turn steering wheel to left (will allow for easier access to EBTCM fasteners)
2. Reposition and/or remove radiator shroud.
3. Disconnect negative battery cable (if equipped with memory seat and mirrors, select memory setting on driver's door that corresponds with number on back of key fob. Also record radio settings prior to disconnecting cable).
NOTE:
PCM, IPC and PZM Diagnostic Trouble Codes will be set. These codes should be cleared when the battery is reconnected.
4. Remove air cleaner.
5. Disconnect EBTCM connector.
6. Hoist vehicle.
7. Remove lower radiator air deflector (3 bolts).
8. Remove left lower close-out panel push pins (2) in wheel well liner.
9. Loosen (2) rear EBTCM insulator mounting nuts.
10. Loosen front EBTCM module insulator nut. Lift module and remove insulator to gain access to front mount stud.
11. Raise EBTCM module from bracket.
12. Remove EBTCM module front mounting stud (torque 30).
13. Remove lower EBTCM module mounting bolts (2) (torque 25).
14. Lower Vehicle
15. Remove upper EBTCM module mounting bolts (2).
CAUTION:
Clean module prior to removal. Do not pry or twist EBTCM. Damage may occur to sealing surface of brake pressure modulator valve (BPMV) or internal pin connectors.
16. Remove EBTCM module from vehicle.
NOTE:
Be sure to follow proper procedures for Electrical Connector cleaning prior to installing the new EBTCM module. Clean BPMV gasket surface with alcohol.
17. Install new EBTCM module in vehicle.
18. Install upper EBTCM module bolts (2) (hand tighten - bolts to be torqued in step 26).
19. Raise vehicle.
20. Install front mounting stud and torque to 14 N-m (10 lb.-ft.).
21. Install lower EBTCM module bolts (2), torque to 4~5 N-m (40 lb.-in.).
22. Install front insulator, lower EBTCM module into bracket, and install insulator nut. Torque insulator nuts (3) to 10 Nm (7.5 lb.-ft.).
23. Install lower close-out panel push pins (2) at the wheel well liner.
24. Install lower radiator air deflector (3 bolts).
25. Lower vehicle.
26. Torque upper EBTCM module bolts (2) to 4.5 N-m (40 lb-in.).
27. Install EBTCM connector.
28. Install air cleaner.
29. Connect negative battery cable. Clear Diagnostic Trouble Codes. If equipped, reprogram memory seat and mirrors by pressing set button and button # 1 or # 2 on driver's door. Selection must correspond to number on back of key fob. Ensure radio station are reset to stations previously recorded. Set clock to correct time.
30. Install radiator shroud.
31. Re-calibrate MAGNASTEERS. Refer to Section 8A-45-3 of the Service Manual MAGNASTEERS can be found under Diagnosis - Chassis.
32. Install Campaign Identification Label.
BUICK
1. Disconnect negative battery cable (ensure seat and mirror are in position # 1 and radio settings are recorded prior to disconnecting cable).
NOTE:
PCM, IPC and PZM Diagnostic Trouble Codes will be set. These codes should be cleared when the battery is reconnected.
2. Remove air cleaner door.
3. Disconnect EBCNUBTCM connector.
4. Remove front bracket to frame rail bolt and front bracket to EBCM/EBTCM bolt. Remove front mounting bracket.
5. Remove EBCM/EBTCM module mounting bolts (4) (torque 25).
CAUTION:
Clean module prior to removal. Do not pry or twist EBTCM. Damage may occur to sealing surface of brake pressure modulator valve (BPMV) or internal pin connectors.
6. Remove EBCM/EBTCM module from vehicle.
NOTE:
Be sure to follow proper procedures for Electrical Connector cleaning prior to installing the new EBCM/EBTCM module. Service Bulletin # 73-50-21 (estimated release date: June 1997), contains additional connector information. Clean BPMV gasket surface with alcohol.
7. Install new EBCNWBTCM module in vehicle. Install front mounting bracket. Install front bracket to frame rail bolt and front bracket to EBCM/EBTCM bolt front mounting stud and torque to 14 N-m (10 lb.-ft.).
8. Torque EBCM/EBTCM module bolts (4) to 4.5 N-m (40 lb.-in.).
9. Install EBCM/EBTCM connector.
10. Install air cleaner cover.
11. Connect negative battery cable~. Clear Diagnostic Trouble Codes, ensure seat and mirror are in position # 1 and radio/clock are properly set.
12. Re-calibrate MAGNASTEER (if equipped). Refer to Steering Controls Cell 45 in electrical Diagnosis. MAGNASTEER can be found under Diagnosis - Chassis.
13. 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 by the customer for periodic servicing. Additional Campaign Identification Labels can be obtained from DGN.
Apply the "Campaign Identification Label" only on a clean, dry surface.
CLAIM INFORMATION
Submit a Product Campaign claim with the information shown.
Disclaimer