Transmission slow to shift

[Jim up north]

Is it normal or is it just me but I find that my truck sometimes takes it's sweet time to want to change gears from a full stop at say, a corner light. I feel a sort of drone underneath my seat. Am I accelerating too slowly and the transmission thinks it's under a load. The oil and filters were changed just after I bought it at 71,000 km. I have read somewhere the transmission would have to relearn my driving habits , but I can't seem to find that post. Something concerning the batteries . If you undo the batteries you can redo the shift points or something ? It's just I feel as if it is forcing itself to want to change gears .
Jim

 

[DaveBen]

Disconnecting the batteries will force the transmission to relearn your driving habits. Disconnect them and turn on the headlights for a moment to drain off the static charge, then reconnect the whole mess.

Dave