You need to check the speed senser, that can cause your problem.
I would tell you where that is but I have no info. on that truck. I wish I could help you further. VERY SORRY.
Could possibly be shifting gears sporadically or your driving on hilly terrain.
People wanted an better way of driving with less distractions like shifting and the use of a clutch
An automatic transmission is better than a manual transmission for city driving. It cuts down on the fatigue of constant shifting and reduces rollback.
Because it is. The transmission of an automatic does for you what you have to do if driving a stick. it does that whole clutch in shift for you, supposedly making it more efficient in usage of gas.
Better gas mileage and it will pick up speed faster when shifting gears.
Probably a vehicle speed sensor (vss). As the engine/trans warms up the sensor may go out of operating parameters. Usually the vehicle will experience erratic shifting also. Hope this helps you.
a speedometer pointer is were there is a pointer were basically it points what speed your in whilst your driving
The purpose of the automatic transmission is that is shifts for you. You'll want to lock your transmission into your ideal gear for going up and down steep inclines to prevent it from downshifting, but, other than that, you typically let the computer do the shifting for you.
no
A clunking sound on shifting gears and while driving can be indicative of failed transmission mount. If the condition is always occurring regardless of shift and driving on level surfaces an internal automatic transmission mechanical condition is possible also.
The advantage of a six speed manual transmission over a automatic transmission is you control the shifting. Now this can be a good or bad thing. It depends on how exprienced you are at driving and how well you know your car. Another advantage is that when you are driving or racing on a track you have another gear to go unlike other cars.
That's called the tachometer. You didn't provide much information, but maybe it only happens when you (or the automatic transmission, if you have an automatic) shift gears. If that's the case, it's normal. Shifting to a different gear at any given speed changes the RPM's of the engine. If it happens at times other than when shifting, something else is wrong.