NO FOURTH GEAR (REPLACE TRANSMISSION)

SUBJECT: NO FOURTH GEAR (REPLACE TRANSMISSION)

MODELS: 1994 CADILLAC CONCOURS, ELDORADO, SEVILLE

TRANSAXLE APPLICATIONS: 1994 HYDRA-MATIC 4T80-E (RPO MH1)

CONDITION: (FIGURE 1)

SOME OWNERS OF THE SUBJECT VEHICLES WITH HYDRA-MATIC 4T80-E TRANSAXLES BUILT MARCH 7 THROUGH MARCH 9, 1994 (JULIAN DATES 066-068) MAY COMMENT ON A NO FOURTH GEAR CONDITION.

CAUSE: (FIGURE 2)

THIS CONDITION IS DUE TO A THIN WALL IN THE TRANSAXLE CASE FOURTH CLUTCH SERVO BORE AREA. SUSPECTED CASE DIE #12A WITH 4,5,6 OR 7 DOTS.

CORRECTION:

REPLACE WITH A NEW GOODWRENCH TRANSMISSION (SRTA) UNIT.

SERVICE INFORMATION:

REFER TO YOUR GOODWRENCH TRANSMISSION CATALOG FOR THE PROPER MODEL IDENTIFICATION.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE: LABOR OPERATION: K7000 USE PUBLISHED LABOR OPERATION TIME.

FIGURES: 2 ATTACHMENTS: 0

GENERAL MOTORS BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS, NOT A "DO-IT-YOURSELFER." THEY ARE WRITTEN TO INFORM THOSE TECHNICIANS OF CONDITIONS OCCURRING 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 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 1994. GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.