My girlfriend has been having this problem for the last year with her 2005 Chevy Blazer where she puts the truck in park (auto tranny obviously) and the rear window latch will pop open. It has been to the dealer 5 or 6 times for this problem and they have replaced the latch/switch 2 or 3 times but now they say they won't replace it anymore and that it's because the latch gets dirty that it does this. The most they will do now is clean it. That sounds like a line they're feeding us. How can dirt getting in a latch cause it to only pop open when the truck is placed in park? This problem seems to re-occur every 2 months.