6L80/90 3-5/Reverse Drum - Transmission Digest

6L80/90 3-5/Reverse Drum

The drum may crack at the weld affecting application and setting DCT’s such as P0776.

A recurring issue with a GM 6L80/90 transmission involves the 3-5/Reverse clutch drum. The drum may crack at the weld affecting application and setting DCTs such as P0776. Use caution when testing for a cracked weld to ensure that it is not something else.

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