GM 96042540
Neutral Safety Switch

Replacements of the 5l50-e automatic transmission manual shaft shift position switch require first securing and elevating the vehicle. A new shaft seal should be installed with the j 44767 seal installer before removing the transmission manual shift shaft nut. When replacing the manual shift shaft you need to detach its linkage from the shaft and remove the exhaust components together with the transmission propeller shaft coupler. To release the coupler slide the front propeller shaft toward the rear while securing the front propeller shaft to the shift control lever with mechanics wire. Leaking requires the removal of shaft seal and cup plug where transmission replacement is only necessary when manual shift shaft demands replacement. The manual shift shaft position switch electrical connector receives detachment before using a suitable pin punch to remove its retaining pin. Before support removal position a suitable transmission jack under the transmission support then disconnect the support from the body. Drop the transmission's rear section over the Floor Pan limit to extract the manual shift shaft which will allow removal of the manual shift shaft position switch and detent lever and assembly spacer plus park pawl actuator assembly. To install the manual shift shaft position switch and other components as an assembly users should insert the manual shift shaft completely into the transmission case then raise the transmission to its original height. After installing the transmission support remove the transmission jack to correctly install the manual shift shaft detent spring along with the control valves body bolts while keeping the detent lever locating pin in position with the detent spring roller secured. Assemble the transmission while carefully inserting the pin punch to set the retaining pin then connect the electrical connector. Afterward, place a 0.8 mm spacer between the manual shaft detent lever and spring. When installing the transmission fluid pan reinstall the filter while removing the spacer then tighten detent spring bolts to 11 nm (97 inch lbs.). Use j 44767 to replace the old shaft seal and verify its complete seat. In case of a missing cup plug, install a new plug by applying transmission fluid. Completion includes front propeller shaft attachment to shift control lever followed by installation of propeller shaft coupler to transmission flange. Then reinstall the exhaust system and connect shift linkage before tightening the transmission manual shift shaft nut to 9 nm. Next adjust the shift control linkage before finally lowering the vehicle.

Position a suitable transmission jack under the transmission support, remove the support, and lower the rear of the transmission just enough to allow the manual shift shaft to clear the vehicle floor pan.

Remove the mechanic's wire securing the front propeller shaft, install the coupler to the transmission flange, and reinstall the exhaust system.

Confirm proper engagement of the manual shift shaft detent lever locating pin with the manual valve link and the detent spring roller with the manual shift shaft switch.

Remove the manual shift shaft detent spring and bolts, then position a suitable transmission jack under the transmission support and remove the support from the body.

Begin by raising and supporting the vehicle.

Using a suitable pin punch.

Insert the manual shift shaft position switch and other components as an assembly, ensuring the park pawl is pushed up if necessary.