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My first suspect is either the handle itself (where it attaches to the linkage) has broken or the linkage itself has come apart. Since the door still opens from the outside, the latch itself is good.
I am going to provide the directions for replacing the interior handle. Follow the directions to remove the handle. Once the handle is off, inspect the two linkage rods which attach to the handle. One is for the lock and the other for the door release.
Here are the directions. The attached pictures correlate with these directions.
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DOOR HANDLE REPLACEMENT - INSIDE
Door Handle Replacement - Inside
Removal Procedure
Picture 1
1. Remove the screw from the center of the inside handle pocket.
2. Slide the handle forward and pull outward to expose the lock rods.
3. Using a thin-bladed tool, disengage the rods from the retaining clips.
4. If the vehicle is equipped with power windows, disconnect the electrical connector from the switch by depressing the retaining tabs.
Installation Procedure
Picture 1 again
1. Connect the electrical connector to the power window switch.
2. Position the inside handle to the door trim and partially seat the rear tangs.
3. Lift the lock rods into the retaining clips. Secure the rods into the handle by latching the clips over the rods.
4. Push the handle into the trim panel and slide rearward to fully engage the tangs. Verify that the rods clear the water deflector.
Notice: Refer to Fastener Notice in Cautions and Notices.
5. Install the screw in the handle.
Tighten the screw to 2.5 N.M (22 lb in).
6. Verify the correct installation of the lock rods by testing for smooth movement of the lock button and of the inside handle.
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Let me know if this helps or if you have other questions.
Take care,
Joe
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Tuesday, March 5th, 2019 AT 8:04 PM