Begging for help!!! '11 Jeep GC experiencing shudder/choking. Is there a fix?? - Jeep Garage - Jeep Forum

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Old 08-08-2015, 07:18 PM
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Begging for help!!! '11 Jeep GC experiencing shudder/choking. Is there a fix??

Hi this is the first time on this forum. I was hoping to get some help on my issue (which countless others have experienced by the looks of it). This is my issue:

I recently purchased a 2011 Jeep GC 5.7 V8 (w/51K miles). The truck drove great the first few weeks, but recently started experiencing the shudder/choking symptoms other owners have encountered. The issue occurs around 55mph or higher (w/acceleration or cruising). I tried using the Autostick (5th gear) and Tow/Haul tricks to disable MDS, but they didn't seem to work effectively.

I recently took it to the dealership to have looked at. They performed TSB 21-006-13. This only fixed another issue with the truck "clunking" at 40mph during deceleration. They also performed a tire balancing but that had no positive effect. I was curious about TSB 21-004-13, but was informed by a Jeep customer rep that this doesn't apply to my truck due to mine being an early release (built 11/10). He has opened a case and requested that I keep Jeep posted if the dealership doesn't find the issue.

I am here reaching out to ANYONE on the forum that may have a solution or even suggestion. Is there something that can be disabled or modified to stop this? I've read about the torque converter being an issue, possibly using a tuner/super chip (ex. Diablo)...this is all foreign to me, sadly. I love the jeep but this is ruining the experience.

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Old 10-02-2015, 08:47 AM
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Re: Begging for help!!! '11 Jeep GC experiencing shudder/choking. Is there a fix??

I thought I was the only one with this problem! Just had my 32k service on my 2011 (overland hemi)...showed them a list of TSBs that I believed I needed including the "shudder" one. Got the truck back and said they only applied tsb 21-006-13..since the "shudder" TSB didn't apply to my truck! So, like you, the tranny "clunk" is gone but I still have the shudder!!!


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Old 10-02-2015, 07:09 PM
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Re: Begging for help!!! '11 Jeep GC experiencing shudder/choking. Is there a fix??

TSB 21-004-10 should resolve this issue, but i was told my truck is not in the range (it was built 4-2011)...now what??
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Old 11-01-2015, 09:38 AM
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Re: Begging for help!!! '11 Jeep GC experiencing shudder/choking. Is there a fix??

I recently went through this experience as well. Went to the dealer and they performed a software update (service writer could not tell me what TSB they actually performed... bastard!).

The "software update" did help, but did not resolve 100%. I would say it is 60% better than what it was prior to the update.

I have a 2011 (build date 10/10) 5.7L and bought it with 57k (CPO). Spark plugs are suppose to be changed every 30k miles for the HEMI, and figuring that it was close to the 60k mark, I went ahead and ordered the 16 plugs. After replacing the spark plugs, the shudder improved another 20%.

My last attempt is to use 93 octane gas to see if it'll make the shudder imperceptible. Haven't driven around enough yet to see if the higher octane makes a difference, but will report back.

My suggestion is to see if the spark plugs are worn, perhaps the spark plugs weren't replaced at 30k? Or perhaps there is premature wearing before the 60k mark. Maybe remove a couple spark plugs first and investigate if they look worn. When I took my spark plugs out, there was a 0.055 gap when new they are suppose to be gapped at 0.043. FYI: I bought the OEM Mopar spark plugs from amazon for $60 (qty 16).

Hope this information helps!
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