A/T - On Car Service: Overview

85olds3

SUBJECT: DEALER AUTHORIZED REPAIRS ON NUMBER: 85-T-16 THM 440-T4 TRANSAXLE

DATE: Feb. 14, 1985

MODELS/YEARS 1984-85 CUTLASS CIERA & SECTION: 7A
1985 NINETY-EIGHT


Since the introduction of the THM 440-T4 automatic transaxle, some units have been replaced by Hydra-matic Division through the Transaxle Exchange Program. Effective immediately, the dealer technician is to perform on-car service to units that may exhibit any of the conditions listed below:

^ Shift conditions related to vacuum
^ Transaxle converter clutch does not release, causing engine to stop running
^ Unit will not upshift or upshifts late
^ Fluid leaks
^ Slips on upshift, freewheels, vibrates during acceleration
^ Harsh 3-2 downshift

These conditions are to be repaired on-car (transaxle removal not required) by following the on-car service information contained here and referring to Section 7A and the 440-T4 unit repair portion of the chassis service manual. Perform only the service operations specified.. At no time should the transaxle channel plate be removed.

IMPORTANT: REPLACEMENT UNITS WILL BE PROVIDED FOR TRANSAXLES THAT EXHIBIT ANY CONDITIONS NOT LISTED IN THIS BULLETIN.

The following service information is contained in this bulletin.