The other day, pulling a moderate sized rv trailer, my transmission slipped I think-

The tranny had just entered lockup- at 85km/h and as I was accelerating up a hill, i noticed my tach pick up a couple hundred RPM.

i let off the throttle and back into it- every thing was normal afterwards. No more slippage felt.

I continued to drive for an hour though the mountains without any more difficulty.

The question is- do you think I was experiencing slippage due to worn clutches or could it have just been a bad shift or something on the transmissions part.

My oil was recently flushed - 20 000km ago - and there doesnt seem to be any smell or dark discoloration from the oil

My truck has 210 000km - rarely towed city driven
My smarty is on setting 3.

I have no other shifting issues, slippage or otherwise noted on my transmission.

Thanks in advance.

 

Have you ever adjusted the transmission bands ?

 

You may have felt the TCC engage then immediately disengage until you let out of the throttle.

 

i have never adjusted the bands- though I am planning on it now.

Saggonwagon- I never considedered that it shuttled back out of overdrive-......that would make me eversomuch happier if thats the way it was.

 

Yup. Sounds like the TC unlocked - especially if you were accelerating up hill with a load.