05 QUEST S

I HAVE GRINDING NOISE(SOUNDS LIKE GEARS) AFTER ACCELERATING FROM 0-25 AND THEN AGAIN COMES BACK SLOWING DOWN.
DOES ANYONE HAVE IDEA WHAT MAY BE? SHOP RECOMMENDED TRANNY FLUSH, BUT CAN I DRAIN AND THEN ADD BACK. I HEARD DOING FLUSHES CAN CAUSE MORE PROBLEMS. ALSO I HAVE NOTICED THE 4TH DIGIT IN ODOMETER GOES IN AND OUT. CAN THIS BE RELATION? JUST SPENT OVER $400 WITH NEW BRAKES AND ROTORS AND ALIGNMENT.
PLEASE HELP
LAURA

You may want to have your
You may want to have your front wheel bearing checked out, ours started making a strange grinding like noise similar to yours.
I found a new bearing at a nissan oem parts store online for about $80. I replaced it my self, Its a little bit of work to change it,
but way better than paying the dealer $800 to replace it.