For 1990-2009 cars

# 4T40E , 4T45E Change in Appearance of Forward , Second and Reverse Clutch Wave Plate - kw automatic black first fourth forward shift transmission

Subject: | 4T40E, 4T45E Change In Appearance of Forward, Second and Reverse Clutch Wave Plate

Models: | .

When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

### Condition/Concern:

The manufacturing process for the Forward Clutch waved steel clutch plate (604), Second Clutch waved steel (96) and the Reverse Clutch waved steel clutch plate (460) was changed to a new heat treating process; the Forward waved clutch plate appears dark in color and looks as if it were overheated at one time. The Reverse Input clutch plate (waved) appears dark and looks as if it were overheated at one time on the inner and outer edges.

### Recommendation/Instructions:

The Forward and Reverse clutch waved steel clutch plates have changed in appearance only, due to a change in the manufacturing process. The functionality of the waved steel clutch is no different. These waved clutch plates will be used for both production and service.

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Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.

### Models:

(2000-2004 Chevrolet Cavalier) and (2000-2004 Chevrolet Malibu) and (2000-2004 Oldsmobile Alero) and (2000-2004 Pontiac Sunfire) and (2000-2004 Pontiac Grand Am)

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