How can i shut my sliding door on my Pontiac montana van it is stuck open and wont even shut manually
Check the door latch and see if it isn't already in the locked closed position. If so, force it back open, then shut the door carefully.
try oiling the door hinges.
You first need to examine the latch, which should form a C shape as the door closes. The C shape should get swiveled and instead form a V shape as you try to lock the door, which would prevent it from shutting up.
check and see if the latch is closed if so force it open and carefully close it and oil it