Owners of GM cars and light trucks equipped with the Hydra-Matic 4T65-E automatic transmission may complain about a transmission fluid leak. The condition may be caused by an improperly torqued channel plate gasket.

To correct this condition, replace the channel plate gaskets #429 and 430. refer to Case Side Cover Replacement in the automatic transaxle – 4T65-E subsection of the service manual.

The top gasket shown here is #429 and the lower gasket shown here is #430. Follow the torque specifications in the service manual when replacing the gaskets and the side cover.

The top gasket shown here is #429 and the lower gasket shown here is #430. Follow the torque specifications in the service manual when replacing the gaskets and the side cover.

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