Door on drivers side is sagging

Car doors in general can wear out hinges / hinge pins due to the weight of the door. You can replace the hinges - but that can be costly. You can try replacing the pins and installing bushing for a fraction of the cost with these or those similar:


Dorman 38410 Door Hinge Repair Kit

Here's a good guess, if it's hard to open from the inside it's the door hinge pin bushings allowing the door to sag on the door latch. This usually happens first on the drivers door and then a year or so later the passenger door wears out. You didn't say what year it was. Check the door line at the top of the door to see if the gape is widening toward the latch side.. If you don't fix it you will eventually break off the inside door handle. The parts are cheap, the door is really heavy you'll need help holding the door to change the bushings and you only change one at a time. Their easy to change once you see how they come out, make sure the door is stabilized by someone and pull the pin ( like a house door pin) and replace the bushings and reinstall. Make sure you have help holding the door stable. Hope this helps...

you have to mach it up its a maybe

usually the door latch will go bad when the door hinge bushings are very worn. Inspect the door hinge by holding the door a grab the outside door handle and the door shell firmly. Now lift the door up vertically and see if there is any play in the hinges. If the slightest movement is found replace the door hinge pins and bushings. your door latch may work great again If not replace that too

Door pins and bushings are a common part to wear out on a lot of the GM's. Have someone lift end of door for you while you watch where hinges and pins are. Not an expensive or overly difficult task, if your mechanically inclined, otherwise, a bodyshop, or mechanic, shouldn't charge any more than a half hour to replace them.

Hinge is either loose or broken. tighten or replace hinges.

Are the door hinges OK. The doors are heavy and often the bushings wear out making the door hard to open.

With the window down, reach inside and find a place to the rear on the door that you can lift from. Then try lifting while you pull on the handle. I have seen the door hinge bushings get bad and let door sag, and then the latch won't release from the striker.
Its the only thing I can think of as being the problem if everything is moving inside the door as it should. If you do get it open you can check the bushings by having the door almost to the closed position and lift up on it if they are bad you will feel the play in the bushings. If this is the problem you can replace just the bushings and not the whole hinge. Thats when you are probably going to have to talk to a body shop.

Yes, it probably either has screw head dead center or one on each side of latch striker. Loosen, tap for movement, then re-tighten. Don't back it off too much, just enough for it to move.

You should replace the bolts for the hinges. This should fix your problem.