What all could this be a warped rotor or what else it started when I got on the highway and has done it ever since it kinda fades in and out

Check to make sure one of your disc brakes are not grabbing or that one of the rotors are warped.

you should use the highest gear possible to allow over drive to kick in, other gears will slow and limit the speed you can drive ,and stress the tranny

Your front rotors are warped. If they are in good shape and thick enough they may be able to turn them and make them true again.

If they are in bad shape or to thin they will need to be replaced. Check the amount of brake pad left while you are checking the rotors. If the pads are 2-4 mm they are ready to be replaced.

It also won't hurt to check the calipers to make sure the pistons move freely and check the caliper slides to make sure they are not frozen as well.

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does it vibrate at highway speeds or sitting still at idle? the highway speed vibration could be tires out of balance. the idle speed vibration could be weak engine mount or idle speed too low.

Warped rotors on the frontwheels will cause the steering wheel to shake from side to side. You may also want to have the tie-rod ends checked.

Take the car back and have the tires re-balanced. Also have the front brake rotors checked to see if they are warped. If your front rotors are warped it will give you a shimmying effect when you apply the brakes coming to a stop. If they are warped you can either have them "turned" to bring them true again, but sometimes the rotors are inexpensive enough to just replace because even though you turn them there is a chance they will warp again in a few days.

Most common cause for this is rotors that have become warped. It is not uncommon if you drive fast and brake hard OR live in hilly country or with heavy loads. The brakes get hot - the more they are used the hotter they may get. When they cool they do not cool evenly. If there is enough of the rotor left it may be resurfaced to true it. However - the thinner it gets the less heat it can handle. When rotors reach a minimum thickness (stamped on the rotor) they must be replaced.

Re-check again, that's what rotors do when warped, but only when the pedal is applied. If you let off and the pulsation goes away, it's the rotors.

No, the stuff installed from the factory sometimes is junk. a good aftermarket set of rotors will prolong the life of them.