K 2500 Suburban 4WD V8-5.7L VIN R (1999)
Backup Lamp Switch: Service and Repair
4L80-E Automatic Transmission
REMOVAL PROCEDURE
4L80-E
1. Apply the parking brake.
2. Shift the transmission into neutral.
3. Disconnect the negative battery cable.
4. Remove the nut securing the transmission control lever to the manual shaft.
5. Remove the transmission control lever from the manual shaft.
Important: Because of the park neutral position switch lead connector breaking when disconnected, disconnect the harness connector at a point near
the vehicle harness, not at the park neutral position switch lead.
6. Disconnect the two wiring harness connectors from the park/neutral position switch.
7. Remove two bolts securing the park/neutral position switch to the transmission.
8. Remove the park/neutral position switch from the manual shaft.
INSTALLATION PROCEDURE
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Tools Required
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J41364-A Neutral Position Adjustment Tool
1. If the park/neutral position switch did not slide off the manual shaft, file the outer edge of the manual shaft in order to remove any burrs.
2. Install the switch to the transmission manual shaft by aligning the switch hub flats with the manual shaft flats.
3. Slide the switch onto the transmission manual shaft until the switch mounting bracket contacts the mounting bosses on the transmission.
