Replaced mine, twice. The first time I had various issues. The second time (shortly after the first time) my Jeep simply died while I was driving. The procedure is easy enough (I think Dr. Dirty did write up on the board here) but you will need to have a dealership flash it after the new one is installed.
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Removing and installing the same or new TIPM will not require dealer programming if the CCN and PCM are installed and operating properly.
I don't know if this applies to a used TIPM from another vehicle.
1. Position the TIPM into the engine compartment.
2. Connect each of the seven TIPM wire harness connectors.
3. Position the TIPM onto the mounting bracket and push down until the mounting clips are fully seated.
4. Position the TIPM positive cable onto the mounting stud and install the retaining nut. Tighten the nut to 80 - 100 in. lbs.
5. Open the TIPM cover and fully seat the Airbag fuse holder (two fuses in one yellow carrier) and the Ignition Off Draw (IOD) fuse.
6. Connect the battery negative cable.
7. Close the hood.
8. Insert the ignition key and turn it to the “RUN” position and wait twelve seconds. The TIPM will collect the necessary vehicle configuration and VIN data from the CCN and PCM at this time. After twelve seconds turn the ignition key to the “OFF” position and then back to the “ON” position and verify proper vehicle systems operation.
If the information was lost or corrupted, it can be retrieved with the StarScan tool through DealerConnect.