[2002DMAXX]

My truck has done this twice now. I was sitting stopped in the middle of the road and the tranny made a clunk and went into neutral moved shifter up and back to drive and it was fine. like I said its done this twice but not all the time whats mcausing this

 

[jc1843]

Assuming the fluid level is correct---- it may be the NSBU switch. Lots of problems with the switch, as it is exposed to the elements. It will usually display "Shift Range Inhibited" on the DIC display.

 

[duramaxbd03]

as so it could be a solinoid... my truck would clunk and get stuck in different gears

 

[FREIGHTTRAIN]

welcome to df it could just the her time to go

 

[daddysLBZ]

my fell out of gear when my transfer case started to go.............but may be nsbu,t case,or tranny.......

 

[2002DMAXX]

thanks for help guys I check that switch

 

[DuraTitus]

NSBU Sensor...!!!

 

[2002DMAXX]

anyone know what a nsbu costs?

 

[duramaxbd03]

anyone know what a nsbu costs?

think around 120ish?

 

[jc1843]

Try to buy from a Allison ( $75) or next a NAPA dealer ($50)-- The one from GM is gold plated-?? - cost like $250.