push button trans won't go into reverse.

More often than not the button has fallen off the push button assembly. simply remove the cover from the dash and reinsert the button into the two prong fork that holds it in place. Squeezing the fork back together will prevent a recurrence. However squeezing the two prongs back together is tricky and often results in a broken fork requiring replacement/repair of the shifter assembly. The trick is to not squeeze the tips of the fork together but apply the squeeze pressure as far back on the fork as possible. Your not trying to close the gap by 1/8", your trying to close the gap by thousand'nths of an inch.