2006 Rendezvous does not sense park and will not start again.

What is your question?

within the last week my 2006 Rendezvous has started to NOT sense when it is in Park. At the bank drive thru the door locks started to flip on and off all by themselves and the little bar under the P in park was not showing up. Went into gear just fine. Stopped for lunch and when I can out and turned the key nothing. no clicking, no grinding - nothing. however all the electrical items worked just time. Touched the brake peddle to see if I could adjust the shifter (it was in park) and the peddle locked. Fiddled around with the shifter for a few minutes and then the brake peddle released and it started like nothing was wrong. any ideas?

How long has your 2006 Buick Rendezvous had this problem?

started about a week ago