CTS V6-3.2L VIN N (2003)
Shifter A/T: All Technical Service Bulletins
A/T, M/T - Shifter Vibration/Noise
Bulletin No.: 03-04-17-003
Date: February 27, 2003
TECHNICAL
Subject:
Vibration/Noise From Auto/Manual Shifter During Drive/Gear Shifts (Replace Front Prop Shaft To Transmission Flange Retaining Bolts)
Models:
2003 Cadillac CTS - Built Prior To 30146320
Condition
Some customers with automatic/manual transmissions may comment on a vibration/noise from the shifter when driving or during gear shifts.
Cause
This condition may be due to torque reversals and driveline vibrations causing the threads on the front propeller shaft to transmission flange retaining
bolt to wear down. As the bolt shaft diameter decreases, the clearance may increase between the bolt and the transmission output shaft flange creating a
vibration or noise.
Correction
Important:
It is important to follow the new procedures in this bulletin because the automatic and manual transmission fastener attachments are different.
Important:
The Propeller Shaft Replacement procedure has been updated within SI.
A newly designed shouldered retaining bolt and new installation procedure is now available.
Install three new bolts, washers and nuts. Refer to the appropriate procedure in this bulletin.
Automatic Transmission Front Prop Shaft To Flange Bolt Installation
1.
Place the shifter lever in Neutral.
2.
Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in the General Information sub-section of the Service Manual, SI
Document # 813128.
3.
Remove the exhaust system. Refer to Exhaust System Replacement in the Engine Exhaust sub-section of the Service Manual, SI Document #
783469.
Important:
DO NOT REMOVE all three propeller shaft to transmission flange bolts at the same time. DO NOT REMOVE the coupler from the propeller
shaft.
4.
Remove one front prop shaft to transmission flange bolt.
