Just started getting an intermitant problem with selecting reverse/park. Come to a stop foot on brake, lever moves to neutral but wont go any further. Back to drive and neutral again but still no further. However it seems with a few pumps on the footbrake eventually it will shift to reverse and park. For a few times then its fine and the problems then re-occurs. Any ideas?

 

Shifter lock solonoid starting to go bad or out of adjustment? not really sure though just guessing?