# 2011 Jeep Grand Cherokee Transmission

**URL:** <https://community.cartalk.com/t/2011-jeep-grand-cherokee-transmission/87882>\
**Category:** General Discussion\
**Created:** [October 30, 2014, 5:53am UTC](https://community.cartalk.com/t/2011-jeep-grand-cherokee-transmission/87882 "2014-10-30T05:53:59Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Spyderken](https://avatars.discourse-cdn.com/v4/letter/s/b487fb/32.png) [@Spyderken](https://community.cartalk.com/u/Spyderken)\
**Post date:** [October 30, 2014, 5:53am UTC](https://community.cartalk.com/t/2011-jeep-grand-cherokee-transmission/87882/1 "2014-10-30T05:53:59Z")

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I have a 2011 Jeep GC with a 3.6 Pentastar. The only thing I don’t like is the 5 speed transmission. Would it be possible for the current 5 speed to be swapped out for one of the newer 8 speed trannies that come with the 14 and 15 GC’s with the 3.6 Pentastar?

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**Author:** ![galant](https://avatars.discourse-cdn.com/v4/letter/g/77aa72/32.png) [@galant](https://community.cartalk.com/u/galant)\
**Post date:** [October 30, 2014, 10:43am UTC](https://community.cartalk.com/t/2011-jeep-grand-cherokee-transmission/87882/2 "2014-10-30T10:43:08Z")

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Would it be possible, maybe/practical, NO.

New cars are much different than the 60’s. Computers run the transmission and its not just a matter of bolting another one in. Most probably even the same transmission from a car 2 years older might not work well in your car. It is cheaper to just change your car (as much as that is an expensive thing to do).

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**Author:** ![missileman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/missileman/32/1366_2.png) [@missileman](https://community.cartalk.com/u/missileman)\
**Post date:** [October 30, 2014, 3:19pm UTC](https://community.cartalk.com/t/2011-jeep-grand-cherokee-transmission/87882/3 "2014-10-30T15:19:47Z")

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+1 for @galant because swapping engines and transmission in modern cars can open up a huge can of worms. It can be done but you must have deep pockets to accomplish the feat. Buying another vehicle is usually the cheaper option.

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**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [October 31, 2014, 4:10am UTC](https://community.cartalk.com/t/2011-jeep-grand-cherokee-transmission/87882/4 "2014-10-31T04:10:23Z")

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Concur, trading it in for a vehicle equipped the way you want it is the most economical solution.

Are you certain you want an 8 speed? The extra speeds are there not so much for performance or divability as simply to post a little better mpg. Helps the sales-force in other words. But there’s a robustness compromise. The more stuff crammed into the fixed-size transmission case, the smaller each moving part has to be. And repairing a broken automatic transmission is very expensive.

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**Author:** ![Hiroshi](https://avatars.discourse-cdn.com/v4/letter/h/b5ac83/32.png) [@Hiroshi](https://community.cartalk.com/u/Hiroshi)\
**Post date:** [November 1, 2014, 12:25am UTC](https://community.cartalk.com/t/2011-jeep-grand-cherokee-transmission/87882/5 "2014-11-01T00:25:18Z")

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Like GeorgeSJ say’s. Low gear and Overdrive ratio’s are about the same. It’s all the in-between that keeps the engine speed at a more given speed to support better fuel economy. You’d have to by a whole bunch of fuel to make up for the cost of the swap including a ECM.