INFO. ON SERV. AVAILABILITY OF 1-2 & 2-3 SHIFT SOLENOIDS

REVISION: 01/14/98

THIS BULLETIN IS BEING REVISED TO CHANGE MODEL YEARS AND MODELS AND ART AND ATTACHMENT CHANGES. PLEASE DISCARD BULLETIN 77-71-73. ______________________________________________________________________

SUBJECT: INFORMATION ON SERVICE AVAILABILITY OF 1-2 AND 2-3 SHIFT SOLENOIDS

MODELS: 1993 CADILLAC ALLANTE 1993-98 CADILLAC ELDORADO, SEVILLE 1994-98 CADILLAC CONCOURS 1996-98 CADILLAC DEVILLE 1997-98 CADILLAC D'ELEGANCE 1995-98 OLDSMOBILE AURORA WITH HYDRA-MATIC 4T80-E TRANSAXLE (RPO MH1) AND WITH 4.0L OR 4.6L ENGINE (VINS C, Y, 9--RPOS L47, LD8, L37)

THIS BULLETIN CONTAINS INFORMATION REGARDING THE SERVICE AVAILABILITY OF THE 1-2 AND 2-3 SHIFT SOLENOIDS FOR THE 4T80-E TRANSAXLE. UPDATED SERVICE MANUAL PAGES FOR THE 1996, 1997 AND 1998 4T80-E TURM MANUALS ARE ATTACHED.

SERVICE INFORMATION (FIGURES 1 AND 2) DURING THE 1996 MODEL YEAR, TRANSAXLE JULIAN DATE 047, A NEW 1-2, 2-3 SHIFT SOLENOID ASSEMBLY (909) AND A PRESSURE CONTROL SOLENOID VALVE FLUID FILTER RETAINER (981) WERE IMPLEMENTED ON THE 4T80-E TRANSAXLE. THESE INDIVIDUAL COMPONENTS ARE CURRENTLY AVAILABLE AT GMSPO.

ALL TRANSAXLES WITH A JULIAN DATE PRIOR TO 1996, 047 MUST BE SERVICED WITH A SERVICE KIT--1-2/2-3 SHIFT SOLENOID VALVES, WHICH IS AVAILABLE AT GMSPO. THIS KIT, P/N 24211355, CONTAINS THE 1-2, 2-3 SHIFT SOLENOID VALVES (909), THE PRESSURE CONTROL SOLENOID VALVE FILTER (917), THE PRESSURE CONTROL SOLENOID VALVE FLUID FILTER RETAINER (981) AND THE BOLT (940) TO HOLD THE RETAINER TO THE LOWER CONTROL VALVE BODY (903). ALL COMPONENTS IN THIS KIT MUST BE USED WHEN SERVICING THESE TRANSAXLES.

1996 TRANSAXLES WITH A JULIAN DATE AFTER 047, AND 1997 THROUGH 1998 TRANSAXLES, SHOULD BE SERVICED WITH INDIVIDUAL COMPONENTS.

PARTS INFORMATION

PART NUMBER DESCRIPTION 24211355 KIT 1-2/2-3 SHIFT SOLENOID VALVES 24207662 1-2, 2-3 SHIFT SOLENOID VALVES 24205848 PRESS CONT SOLENOID VLV FLUID FILTER RETAINER 8680389 PRESS CONT SOLENOID VLV FLUID FILTER 8680869 BOLT-CONTROL VALVE BODY

PARTS ARE EXPECTED TO BE AVAILABLE FROM GMSPO ON NOVEMBER 24, 1997.

ATTACHED ARE THE NEW UPDATED PAGES OF THE 1996, 1997 AND 1998 TURM MANUAL, SECTION 7, AUTOMATIC TRANSAXLE-4T80-E WITH A REVISED PAGE FOR LOWER CONTROL VALVE BODY ASSEMBLY DISASSEMBLE, LOWER CONTROL VALVE BODY AND TFP SWITCH INSTALL AND THE COMPONENT LOCATOR VIEW OF LOWER CHANNEL PLATE CONTROL VALVE BODY AND ACCUMULATOR HOUSING ASSEMBLY.

REPLACE THESE PAGES IN YOUR 1996, 1997 AND 1998 TURM MANUALS.

1996 - REVISED PAGES ARE: 7A-7B-27, 7A-7B-28, 7A-7B-33, 7A-7B-65

1997 - REVISED PAGES ARE: 7A-7B-14, 7A-7B-123 AND 7A-7B-131

1998 - REVISED PAGES ARE: 7-1349, 7-1358 AND 7-1380

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR CODE: K6555 1-2 SHIFT SOLENOID, OR LABOR CODE: K6556 2-3 SHIFT SOLENOID LABOR TIME: USE PUBLISHED LABOR OPERATION TIME.

FIGURES: 2 ATTACHMENTS: 10

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.

COPYRIGHT 1998. GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.