Sonata GL V6-2.5L (1999)
Clutch: Technical Service Bulletins
A/T - One Way Clutch Added
Group: TRANSAXLE
Number: 99-40-011
Date: AUGUST, 1999
Model: 1999 SONATA
Subject
1999 SONATA AUTOMATIC TRANSAXLE ONE-WAY CLUTCH ADDED
DESCRIPTION:
A One-way clutch has been added to the 1999 Sonata automatic transaxle beginning on 3/9/99 to further refine shift quality. The logic of the Transaxle
Control Module (TCM) has also been changed to match the new transaxle.
THE NEW TCM LOGIC FOR FIRST GEAR IS:
The new TCM MUST only be installed on vehicles which are equipped with an automatic transaxle containing a one-way clutch.
NOTE:
The new TCM is NOT compatible with previous transaxles (without a one-way clutch).
PARTS INFORMATION
INTERCHANGEABILITY: NO
