 Straightforward
Replacing the latch is straightforward, but requires a bit of patience and a basic set of tools.
1. Before you do anything, have you thoroughly lubricated the latch with WD-40 or equivalent? That may completely solve your problem. Otherwise I'm going to assume that you've got an electrical problem that manifests itself when it gets really hot.
2. Remove the inside door panel thus: The triangular black plastic cover where the front of the door meets the window post just pops off. The switch panel (where all the door lock and window switches are) pops off in the same way. Remove the connectors from the back of the switches - don't worry about keeping track of them, they're all different sizes. Remove the Phillips screws around the perimeter of the door - there should also be one more right where the door switch panel was. That frees the door panel - lift straight up about two inches, because the door panel has four little L-shaped plastic hooks that sit into the metal part of the door. I didn't realize that the first time and busted one off accidentally. Anyway, once you lift the door up, pull it out toward you and then maneouver it over the door lock post. There is a plastic lining that needs to be peeled off, and that exposes the inside of the door. Once you do that you can clearly see (with a little bit of light and twisting of the head) how the door latch is mounted. Don't forget to disconnect the electrical connector to the latch assembly before you start working on removing it. Also make sure you have some band-aids handy for the scraped knuckles that are inevitable. If you need any more guidance let me know.
- Doug | 
