Shifting problem

Got a 1994 Chrysler Voyager 3.0 V6, Feels like the gears are lazy, taking too long to change up. Done about 160000 Kms, and due a gearbox service, could this solve the problem, speedo is fine, oil level fine, just started a couple of weeks ago. Tried disconneting the batt for an hour, and tried turning the ign off and on 6 times, no change, any advice welcome.

Well, you may wanna check the Voyager forum. :p Might be a selonoid, but I'm not sure, check with those guys.

It could be the fluid and filter, make sure the correct fluid gets in there, not dextron 3, also, does it only do it in one gear or all gears? It could be your driving style or it could be the tcm, might need to be updated or could be going bad, could be the solenoid pack, could be a sensor/switch. Get it scanned and see what that comes up with.