Ensure that you locate the door with the stuck, damaged, or broken latch. Inspect it thoroughly to ensure that you have checked it for exterior damages. You will need to gently lift the door up on the handle to enable you to see if there is any binding of the mechanism within the door

Use another door of the vehicle if it is impossible to use the door which you are working on. While inside, try to open the door with the stuck, broken, or damaged latch.

While still inside, manually lock the damaged door by pushing on the latch on the side of the door. You can operate the latch that is not working via pulling on the handle of the door from the exterior.
If you do that and you find that the latch is operational, then the problem could lie with the door striker. But if it doesn’t operate when you pull on the the handle on the outside of the door but is able to operate well on the inside door handle, then the damage could be on the handle rod inside the door.

In case you are able to operate the door latch from the the handle on the outside of the door, but unable to operate it from the inside door handle, then the level of the hatch may be damaged or bent. When it is impossible for you to be able to operate the latch from both the inside handle or outside handle, then there could be a missing guide pin or the latch is stuck in place.

Make sure that your truck is parked on a hard surface that is flat.

Make sure that, around the tires, you place wheel chocks. The parking brakes should be engaged to lock the tires and ensure that, they don’t move while you are in the process of fixing the door latch.

There are two cross tips, head screws, Phillips, which are attached to the handle of the door on the outside, in the outer age of the door. The upper part of the two screws which are visible, on the upper edge, above the latching mechanism, and hidden partially under the rubber door seal in the door. You will need to remove the screws which hold the door handle to the door shell, then push the handle forward to release it and pull it away from the door.

To do so, you will need to pry the plastic cover out from under the door handles. It is a component which is separate from the plastic rim which is found around the handle. To make it easier to get off the cover, you will need a flat head screwdriver. On the inside, there is a Phillips or cross tip, head screw which has to be gotten rid off . The plastic rim around the handle will have to be removed at this stage with ease.

Before you do this, ensure that the window is fully closed. The plastic cover should be pried up on the crank handle. Remove the head crew, cross tip, or Phillips which is holding the crank handle to the shaft. After that, pull off the handle. From the handle, you will find a large plastic washer. You should take pictures to remind you which way it sits against the door.

You will need to work on the panel, avoid to touch the door paint all around. A removal tool or flat screwdriver will help you to do this. While at it, be gentle to avoid damaging the paint around the door on the panel. Once you have loosened all the clips, you will need to grab the bottom and top of the panel and bend it slightly away from the door. Lift the whole panel straight up to enable you to clear it on the catch behind the handle of the door.
While at it, you will see a large coil spring coming out. Normally, it is found at the handle of the window crank, and you will find it tough to fix it back during the re-installation of sheeting made of plastic. Keep the spring safe. 

At this stage, you will have to remove sheeting made of plastic by pulling it. It is found behind the door panel away from the rear half of the door. If you do it gently, then you will be in a position to reuse it later.

You will have to remove the locking knobs after unscrewing from the window sill after which, you go ahead and unscrew the three cross tip, head screws, or Phillips which is the ones which hold the latch in place. You will find one of these screws on the inside of the door and the other two on the edge of the door, below and above the latch.
The lower one is sort of hidden under the rubber of the door seal and you will see a cut out on the door metal edge which holds the rubber seal in place and it is the one which allows you to get the screw using the screw driver after the seal is pulled towards the inside of the door.

There are two 10 mm bolts which are the ones which hold the inner door handle in place, allowing the handle to hang on the pull wire. The whole latching mechanism should be pushed slightly forward towards the front of the truck. While you are doing this, you will note that the latch end of the pull wire is visible in the inner door frame, in a circular access in front of the latch itself.

Once all the above is done, you will be in a position to make sure that the pull wire is lifted up from the retaining clip. The whole clip should be rotated downward while trying to avoid sliding it forward on the pull wire. Rotating downward while leaving it in place will make re-installation easier. After the retaining clip is released, the inner door handles and the pull wire can be easily removed from the door.

By forcing the latch forward and down, you will be able to remove it from the door. It can be a difficult step as the latch fits firmly in the space. If so, you can rotate the latch slightly counter-clockwise in order to make it a little bit easier to remove. Remove the bolt from the bottom of the rear window runner can be moved a little in order to remove the latch from the door.