My 1995 Monte Carlo has been having problems shifting from park once the brake is applied. The button on the T-handle refuses to depress (shifter is console mounted). This only occurs sporadically - one day it's smooth as silk, the next you fiddle with it for a moment before it works, the next day it seems it may never get out of park - the day after that, smooth as silk again (????). Once out of park, all other functions of the shifter work as normal (neutral safety, gear indicator, etc.).
I do have the factory service manual, but don't find a section on any brake interlock cable or switch - I do see a section on a park interlock function, but it makes no mention of the relation to the brake pedal.
Any thoughts? If it's in there, can someone point me to the correct procedure for adjustments in the factory service manual?
Thanks,
John