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All Technical Service Bulletins for PROM - Programmable Read Only Memory:|191003|Page 9480 > < All Technical Service Bulletins for PROM - Programmable Read Only Memory:|191003|Page 9478
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PROM - Programmable Read Only Memory: All Technical Service Bulletins
A/T - Chirp/Hoot/Squeak On 3-4 Shift

37 Chirping, hooting, squeaking noise when shifting between 3-4

37 10 02 

2013023/9 

April 30, 2010.

Supersedes Technical Service Bulletin Group 37 number 08-17 dated December 16, 2008 for reasons listed below.

Affected Vehicles

Condition

^ Noises: Chirping, hooting, squeaking when shifting up and down 3-4; 4-3.

^ Vibrations: Shudder during the control phase of the torque converter clutch.

Technical Background

The torque converter clutch briefly generates (about 500 ms) noises or vibrations/shuddering when changing gears.

Note:

This only applies to vibrations/shuddering during the control phase of the converter control/converter close.

This converter condition can be checked in MVB 007/3 (converter open/converter control closed).

Production Solution

Optimized ATF (blue) introduced gradually in production years 2005 and 2006.

Service

SVM Update Instructions

1. Follow all instructions in the attached TSB 2011732 00 Software Version Management (SVM), operating instructions.

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