INFORMATION ON NEW INPUT SPEED SENSOR

SUBJECT: INFORMATION ON NEW INPUT SPEED SENSOR

MODELS: 1993 CADILLAC ALLANTE, ELDORADO AND SEVILLE

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

STARTING NOVEMBER 23, 1992 (JULIAN DATE 243) ALL HYDRA-MATIC 4T80-E TRANSAXLES (FIGURE 1) WERE BUILT WITH A NEW STYLE INPUT SPEED SENSOR AND WIRING HARNESS.

WHEN REPLACING THE INPUT SPEED SENSOR ON A HYDRA-MATIC 4T80-E TRANSAXLE BUILT BEFORE NOVEMBER 23, 1992 YOU MUST ORDER BOTH INPUT SPEED SENSOR (8685532) AND WIRE HARNESS ASSEMBLY (12143262).

UNITS BUILT AFTER THIS DATE CAN BE SERVICED WITH THE NEW INPUT SENSOR ONLY.

SERVICE PARTS INFORMATION: (FIGURES 2 AND 3)

NEW 3 PRONG DESIGN PART NUMBER PART DESCRIPTION

8685532 INPUT SPEED SENSOR ASSEMBLY 12143262 HARNESS WIRING ASSEMBLY

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

FIGURES: 3 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.