How do I replace the inside guts of the door latches on both the passenger side door and the sliding door on my 1994 Dodge Grand Caravan?

Question edited for clarity.

Here is the parts schematic

https://www.moparpartsgiant.com/parts-list/2018-dodge-grand_caravan/doors_door_mirrors_and_related_parts/sliding_door_hardware_components.html

https://www.google.com/search?q=2018+dodge+grand+caravan+sliding+door+parts

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There could be several reasons why your 2007 Dodge Grand Caravan sliding door is not latching properly. Here are some possible causes:

1. Obstruction in the Door Track: Check the door track for any debris, dirt, or foreign objects that may be blocking the door from closing fully. Clean the track and remove any obstructions.
2. Broken or Misaligned Door Hinges: If the door hinges are damaged or misaligned, the door may not close properly. Inspect the hinges for any signs of damage or wear and replace them if necessary.
3. Damaged Latch or Actuator: The latch or actuator that holds the door in place may be damaged or malfunctioning, preventing the door from closing properly. Inspect the latch and actuator for any signs of damage and replace them if necessary.
4. Dead Battery: If the battery in your Dodge Grand Caravan is weak or dead, the electronic functions of the sliding door may not work properly. Check the battery and replace it if necessary.
5. Faulty Door Control Module: The sliding door may be controlled by a door control module, which may be faulty or damaged. Have the control module tested and replaced if necessary.

In any case, it's recommended that you take your vehicle to a certified mechanic or dealership to diagnose and fix the issue, especially if you are unable to get the door closed manually.

Sounds like the locking mechanism is worn out and needs to be replaced any mechanic in you're local area should replace it rather cheaply.

Sounds like it., check and clean connections to button first.

Can you pull on the release handle and use a screwdriver to change the position of the latch?

U will have to take the inside door cover off and manualy open it. And replace the electric door locking switch. Very common problem. Get the new lock and latch assembly from dealer,

first check terminals clean with steel wool both door and bpillar then spray wd 40 on the cables below on the inside looks like a chain and the other one outside along the qtr panel / Please rate my response Thank you very much

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

Saw this in an article:
2001 CHRYSLER TOWN AND COUNTRY - Campaign #01I003000 Summary: LATCHES/LOCKS/LINKAGES:DOORS:LATCH
Defect:
THIS IS NOT A SAFETY RECALL IN ACCORDANCE WITH THE SAFETY ACT. HOWEVER, IT IS DEEMED A SAFETY IMPROVEMENT CAMPAIGN BY THE AGENCY. VEHICLE DESCRIPTION: 2001 PLYMOUTH VOYAGER, CHRYSLER TOWN & COUNTRY, AND DODGE CARAVAN/GRAND CARAVAN MINI VANS THAT ARE NOT EQUIPPED WITH THE REMOTE KEYLESS ENTRY OPTION. THE SLIDING DOOR LATCHES ON THESE VEHICLES COULD RELEASE DURING CERTAIN SEVERE ACCIDENT CONDITIONS THAT INVOLVE THE SLIDING DOOR.
Consequence:
THIS COULD ALLOW THE SLIDING DOOR TO PARTIALLY OPEN.
Corrective action:
DEALER WILL REPLACE BOTH SLIDING DOOR KEY CYLINDER-TO-BELL CRANK LINKS ON THE SLIDING DOORS FREE OF CHARGE (PARTS AND LABOR). DAIMLER-CHRYSLER HAS DECIDED TO CONDUCT A SERVICE CAMPAIGN TO REPLACE THE SLIDING DOOR KEY CYLINDER-TO-BELL CRANK LINKS. OWNERS CAN CONTACT DAIMLER-CHRYSLER AT 1-800-853-1403, CONCERNING THIS PROGRAM.
Try calling that number and see if they'll do a replacement for ya..
1-800-853-1403