Sonata GL V6-2.5L (1999)
Control Module: Customer Interest
A/T - 1 to 2 Gear Shift Shock or Shift Hesitation
Group: TRANSAXLE
Number: 99-40-003-1
Date: MAY, 1999
Model: 1999 SONATA
Subject
1999 SONATA 1-2 SHIFT SHOCK OR SHIFT HESITATION
This TSB has been updated to add a revised TCM part number for the 2.4L Fed Spec Sonata.
DESCRIPTION:
Some 1999 Sonata vehicles manufactured prior to 11/06/98 with automatic transaxles may exhibit a shift shock or shift hesitation during the 1-2 shift at
small throttle angles (15-30% TPS). If a customer experiences this condition, test drive the vehicle to confirm the operation.
Attach the Scan Tool to the Diagnostic Link Connector (DLC) and check for Diagnostic Trouble Codes (DTCs). Please be aware that transaxle DTCs for
the 1999 Sonata are available only in the following menus on the Scan Tool:
2.5L V6 - "4-Speed Trans" menu
2.4L 14 - "Engine" menu
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If DTCs are found, repair the condition and test drive the vehicle.
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If no DTCs are found and the vehicle was produced prior to the effective production date listed below, replace the Transaxle Control Module
(TCM).
SERVICE INFORMATION:
Refer to TSB 99-36-005 for TCM replacement procedure.
PARTS INFORMATION:
INTERCHANGEABILITY: A
