Silverado 3500 2WD V8-6.6L DSL Turbo VIN 2 (2004)
PRNDL indicates something is/was incorrect. The transmission may need the attention of a qualified service technician.
Correction
1.
Disconnect the wiring harness from the PNP switch.
2.
Disconnect the shift linkage/cable from the shift lever at the transmission.
3.
With a wrench keeping the shift lever from rotating, remove the nut from the end of the selector shaft.
4.
Use a file to remove any burrs or raised metal where the selector lever was seated against the shoulder of the selector shaft.
Important:
If the old PNP switch will not slide from the selector shaft without the effort, the selector shaft may need to be filed to remove flaring on the
end of the selector shaft. This is important, installing the new switch onto a selector shaft that has damage will cause damage to the new PNP
switch.
5.
Remove the two bolts that attach the PNP switch and remove the switch by sliding it outward over the selector shaft.
6.
Make sure the selector shaft is in the N (neutral) position (using a wrench on the selector shaft flats, rotate the shaft to its furthest clockwise
position and then rotate counterclockwise two detents).
Important:
If the new PNP switch will not slide onto the selector shaft easily, the selector shaft may need to be filed to remove flaring on the end of the
selector shaft. This is important, installing the new switch onto a selector shaft that has damage will cause damage to the new PNP switch.
7.
Slide the new PNP switch over the selector shaft with the neutral assurance bracket 920 facing outward and maintaining the correct PNP switch
orientation to the selector shaft. Install and hand tighten the two PNP switch attaching bolts so that the PNP switch and bracket may be rotated
within the adjusting slots with some effort.
8.
While holding the neutral assurance bracket in engagement with the PNP switch, tighten the two bolts that attach the PNP switch to the
transmission case.
Tighten
Tighten the bolts to 27 N.m (20 lb ft).
