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  #37  
Old 02-18-2012, 10:49 PM
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Re: Waiting for 2013 JGC 8 Speed Transmission

Sorry folks, I should have done some more research before posting a "Quick Response". jgc4ever hit the nail on the head. The difference is 2nd gear.

Here is what I found online:
A. http://en.wikipedia.org/wiki/Chrysler_545RFE_transmission#45RFE_and_545RFE
a. 545RFE Transmission (2001–2011 Jeep Grand Cherokee (4.7L, 4.7L H.O., 5.7L Hemi)
b. 65RFE Transmission (2012 Jeep Grand Cherokee (5.7L)
B. http://www.allpar.com/forums/index.php/topic/135660-65rfe-66rfe-and-68rfe-differences-explained/
a.Light duty applications use the 65RFE. Except for some software differences, the 65RFE is essentially the same as a 545RFE. In fact, you can consider any statement concerning the 545RFE to apply to the 65RFE as well.”
C. http://www.allpar.com/mopar/transmissions/545RFE.html
a. “The next six speed derived from the 545RFE was the 65RFE, initially used with V8 versions of the Ram 1500, Durango, and Grand Cherokee. The 65RFE does not have six forward gears in regular automatic mode, only in ERS/AutoStick mode; it is essentially a software and name change, which allows people to reach the “prime” gear via ERS rather than kickdown. An internal Chrysler communiqué to dealers summarized the change in a similar fashion.”
D. http://www.wk2jeeps.com/wk2_transm.htm
a. This site does a good job of describing the difference in gears and gear ratios for the 545RFE and 65RFE. The 65RFE has a 2nd and 2nd prime gear where the 545RFE only has a 2nd gear. The 2nd gear ratios for the 65RFE are 1.67 for 2nd and the 2nd prime ratio is 1.5. The 2nd gear ratio for the 545RFE is identical to the 65RFE, which is 1.67. And the 5th gear ratio for both transmissions is identical at 0.67.
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  #38  
Old 02-20-2012, 04:19 PM
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Re: Waiting for 2013 JGC 8 Speed Transmission

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Originally Posted by jgc4ever View Post
He could be.
Now that is the funniest thing I've read all day...

I like it.
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  #39  
Old 03-03-2012, 10:02 AM
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Re: Waiting for 2013 JGC 8 Speed Transmission

Anyone hear anything more on this yet? I'm really starting to hate my 08 Trailblazer more now than ever before. This thing doesn't drive anywhere near what my 01 JGC did..God I kind of miss her.
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  #40  
Old 03-03-2012, 12:40 PM
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Re: Waiting for 2013 JGC 8 Speed Transmission

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Originally Posted by skiingmaniac00 View Post
Anyone hear anything more on this yet? I'm really starting to hate my 08 Trailblazer more now than ever before. This thing doesn't drive anywhere near what my 01 JGC did..God I kind of miss her.
I'm with ya! Lots of 2013 auto models from Chrysler and others coming into focus recently, but there hasn't been any real buzz about this for a couple of months. I can't tow my Mastercraft with my Civic... but I'd rather just keep paying someone else to do it (or rent tow vehicle) than trade-in for something about to get a significant performance/mpg upgrade. Looking forward to US CRD pricing and mpg details too.
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  #41  
Old 03-03-2012, 02:36 PM
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Re: Waiting for 2013 JGC 8 Speed Transmission

News maybe with April NY auto show????
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  #42  
Old 03-03-2012, 03:06 PM
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Re: Waiting for 2013 JGC 8 Speed Transmission

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Originally Posted by MSCA View Post
I have mixed feelings about how the 8-speed automatic will function. It seems that sometimes too many gears can equate to too much shifting and a bit of an annoying drive. On the other hand, if properly done, I'm sure the 8-speed automatic will be just fine.
The tranny programming is by far the worst aspect of this vehicle. They can't get 5 gears right, I would hate to have 8 gears of sloppy mess to get through to get up to speed. I wish there was a 2-spd powerglide available, of course, Jeep could probably jack up the 1 shift in that also.
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  #43  
Old 03-08-2012, 11:55 AM
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Re: Waiting for 2013 JGC 8 Speed Transmission

A bit of buzz on the 8-speed today-
http://rumors.automobilemag.com/2013...ic-115547.html
"The eight-speed transmission will be added to the Jeep Grand Cherokee and Dodge Durango by late 2012 or early 2013, as well. Chrysler’s filing says that the new transmission will eventually be used in all its rear-wheel-drive products except for heavy-duty trucks."
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  #44  
Old 03-08-2012, 12:14 PM
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Re: Waiting for 2013 JGC 8 Speed Transmission

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Originally Posted by stratoblaster View Post
A bit of buzz on the 8-speed today-
http://rumors.automobilemag.com/2013...ic-115547.html
"The eight-speed transmission will be added to the Jeep Grand Cherokee and Dodge Durango by late 2012 or early 2013, as well. Chrysler’s filing says that the new transmission will eventually be used in all its rear-wheel-drive products except for heavy-duty trucks."

Does this mean that 8 speed will be available the end of 2012 to order NOV to DEC or JAN to FEB 2013. That is along time to wait! Thought it would be available to order in June for 2013 MY ?
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  #45  
Old 03-08-2012, 12:19 PM
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Re: Waiting for 2013 JGC 8 Speed Transmission

The best news I've seen in a while! I've have been looking to trade in my 2005 Hemi for a new Limited Hemi with the Quadradrive II system. I have been wating for that elusive 8-speed. Not at all pleased with the current 5-speed. I'd order one tomorrow if I could get it.
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  #46  
Old 03-08-2012, 12:29 PM
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Re: Waiting for 2013 JGC 8 Speed Transmission

It sounds like MY 2013 is starting out with the 5 speed, bummer for those who are waiting.
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  #47  
Old 03-08-2012, 01:22 PM
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Re: Waiting for 2013 JGC 8 Speed Transmission

Count me as one who is waiting on some 8 speed news. I'd like to hold out for a '13 as long as I know when they can be ordered.
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  #48  
Old 03-08-2012, 02:19 PM
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Re: Waiting for 2013 JGC 8 Speed Transmission

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Originally Posted by Hockey37 View Post
Count me as one who is waiting on some 8 speed news. I'd like to hold out for a '13 as long as I know when they can be ordered.
8-spd may not make it until 2014 model year. It *might* appear in the diesel GC first (late 1st quarter 2013).
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