We need to band together and file complaints with the NHTSA. Jeep is gonna tip toe around this topic until they can finally figure out how to tune a TCM.
I've dealt with regulatory agencies before. I would recommend that each complaint contain a detailed description of a specific incident that includes the following:
1. HOW THE SHUDDER AFFECTED DRIVABILITY.
2. HOW THE SHUDDER GOT WORSE WHEN MERGING IN TRAFFIC.
3. HOW THE SHUDDER WAS UNSAFE BY DISTRACTING THE DRIVER AND LIMITING THE ABILITY TO ACCELERATE.
4. HOW ONLY HARD ACCELERATION OR DECELERATING STOPS THE SHUDDER AND IS UNSAFE.
5. HOW THE SHUDDER PERSIST AFTER WARRANTY REPAIR ATTEMPTS.
I have the shudder problem, had it for a few weeks, started at about 5,000 miles it did not occur before then. Now its getting worse and more frequent. Its very annoying. I had not been on the forum for a while and had no idea it was a "common" fault. This at least helps prepare for tge dealer.
Theory #263: I think the fishbite is fixed in GC'S that haven't had the torque converter stressed. If the dampener springs haven't been bottomed out, they may be stronger and not set off the shudder on lockup. The TC shudder may cause engine management to react irratically which makes it oscillate until demand changes enough for it to recover. The new TSB seems to have softened the lockup and raised the rpm at engagement. This helps but I'm not sure it isn't just a patch. Shudder may return with time. Mine started shuddering after 8k miles, not when it was new.
Did you get the new TSB? If so, did they wipe the learning data and drive it to re-learn. If you aren't sure, you can pull fuse F60 in the engine compartment box for 30 minutes (or disconnect the battery) then follow the transmission learning procedure. I have the PDF document that outlines the driving pattern if you need it. Supposedly the critical clutch timing is learned in this process. The 5-6, 6-7 shifts are most critical....and coincidentally are where mine shuddered the most.
Mine improved from doing the relearn.
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