ION L4-2.2L VIN F (2004)
Control Module: All Technical Service Bulletins
A/T Controls - Engine Flare on 2 - 3 Upshift
Engine Flare During 2-3 Shift, Most Noticeable During Light to Moderate Acceleration (Reprogram TCM) # 03-07-30-052C - (Mar 15, 2005)
Models:
2003-2004 Saturn ION Vehicles
with AF23-5 Automatic Transaxle (RPO M43)
Built Prior to VIN Breakpoint 4Z113056
Technician
This bulletin is being revised to remove the VUE vehicles and update the Transmission Adaptive Learn Procedure and new Calibration ID Numbers.
Please discard Corporate Bulletin Number 03-07-30-052B (Section 07 - Transmission/Transaxle). Please reference Corporate Bulletin Number
05-07-30-008 for information on the 2002-2003 VUE vehicles.
Condition
Some customers may comment on an engine flare during a 2-3 shift. This condition may be intermittent and may be most noticeable on shifts that occur
during light to moderate acceleration.
Cause
The condition may be caused by aeration of transaxle fluid, resulting in a delayed apply of 3rd clutch.
Correction
To correct this condition, reprogram the transaxle control module (TCM), reset the transmission adaptives, perform Transmission Adaptive Learn
Procedure, and re-evaluate the vehicle following the procedures in this bulletin.
Service Procedure
1.
Verify the customer concern. Evaluate the vehicle for engine flare during the 2-3 shift under light to moderate acceleration using the Tech 2 Scan
Tool.
2.
Locate metal transaxle identification tag (1), and identify the transaxle part number (4). The transaxle part number will be needed when
referencing the calibration information table shown in this bulletin for the correct calibration identification.
Important:
For reprogramming procedures, refer to the Service Programming System (SPS) in SSS Users Guide.
3.
Reprogram the TCM with updated calibration established from the calibration information table in this bulletin. Use Saturn Service Stall (SSS)
software release TIS Data CD 1.0 2005 or later.
Important:
Failure to perform the Transmission Adaptive Learn Procedure may cause intermittent erratic shifts, customer dissatisfaction, and a return visit
to the store.
Important:
