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Mike S.
Mike S., ASE Certified Technician
Category: Buick
Satisfied Customers: 7368
Experience:  A.S.E. certified
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Buick Terraza CXL: We have a 2006 Buick Terraza. The driver's

Customer Question

We have a 2006 Buick Terraza. The driver's side power door will not go shut. It seems to go all the way shut, seems to latch fully closed for a moment, then pops back out, with an alarm, and goes fully opened again. We had some of the latching mechanisms replaced several years ago, along with those contacts and switches at from of door. This helped for a few weeks. We stopped using this door, but it was inadvertently opened today, and now we can't get it to stay shut. Could our problem be caused by the software needing updated, and computer needing to relearn Open/Close position? Or does it sound like a mechanical problem?
Submitted: 2 years ago.
Category: Buick
Expert:  Mike S. replied 2 years ago.
I think it is a mechanical problem. Either the door hinge bushings are worn and the door is sagging and not aligning with the striker or the door latch spring is broken, fallen off or bad and once the door is closed the door latch isn't locking and closing around the door striker.
I usually test the door latch by simulating a striker hitting the door latch using a big screw driver. Hold that door open with the door latch open and use a big screwdriver and try to close the door latch by pressing on it like the striker was making the latch close and see if the latch closes, both the top and bottom half of the latch and that you cannot open either halves back open by prying on them unless you press the unlock.
To check the hinge bushings, with the door open about 1/2 way, lift up on the door at the outer most end and see if there is alot of play in the bushings and also when you close the door make sure the striker meets the door latch.