[markeb01]

There two different ways to lock the doors on these trucks. First is to actually lock the latch. This is done by moving the inside door handle to the locked position, which actually locks the latch.

The other way to “lock” the door is by using a key in the outside door handle. This does not lock the latch (like in a passenger car), it only prevents the door handle button from pushing in. The latch itself remains unlocked. It can still be opened from the inside by simply using the inside door handle. Also if the outside door handle is removed, the latch can be opened by sticking your thumb or a screwdriver against the latch mechanism and it will pop open.

If the problem you’re having is that the door is locked and you can't get it to open at all, it could be the latch is locked and the inside remote mechanism or arm is broken or off the latch at the back end.

Removing the inner panel should let you see what is not functioning correctly.