1999 Dodge Caravan - Can't open rear door.

Take out the 3 or 4 screws holding the latch in on the side of door. May need impact driver. And pull out, unhook linkage and reverse process for new part.

I see you are ale to see the cables and rods how and when they operate. When you to open the latch from the outside and the inside. Are you able to see if they move the mechanism up or down as you try to open the door working the latch outside and the inside door handle. Sounds like your door latch broke internally, the only thing I was able to do was from the inside with somebody holding the outside latch up to open. Kick it hard in the area where the door latch is. Lay on the sit and kick it hard while the outside individual lifts the latch and pulls. It should pop open. Good luck.

The rod from the handles to the lock mechanism could have come off or become bent to the point that it won't work the latch anymore. The prior problems were probably just symptoms of the problem you have now. Will have to take the door panel off and manually trip the latch.

Put a screwdriver shaft or similar in the hole of latch where it would normally wrap around striker when closed on door and turn key or hit button to release and pull it open at same time.

Cut where the latch connects with a sawzall. Replace latch post whee the latch articulates.

push the damn thing harder. *****

rear latch is going out try unlocking door twice with switch then you have to try the hatch handle twice if that doesnt work there should b an acces hole in bottom of door on inside

take the pannel off from the inside this should allow you to get to the latches

Did you double check to see if the child lock switch on the sliding door is up or down?