I have a 2014 as well, but thought the Active Noise Canceling along with the laminated windshield and back/passenger side glass, was new for 2015? I am curious if anyone has compared the 2014 to the 2015.
I've got it on my 15' SRT. It seems like it does it's job. I've got no drone on the highway when I put it in Eco mode. The 14' I test drove had a slight bit with Eco activated.
Overland seats: LEATHER TRIM SEATS W/EDGE WELTING:
Black (GLX9) (with Nador Brown Walnut wood trim) (Standard)
or
Brown/Light Frost Beige (GLUL) (with Brown Zebrano open-pore wood trim) (Standard)
or
Indigo Blue/Jeep Brown (GLUC) (with Brown Zebrano open-pore wood trim) (Standard)
Overland options:
Note: Overland models include UCONNECT 8.4AN AM/FM/BT/ACCESS/NAV (RA4) (with Premium Navigation and HD Radio) (Standard)
A. ADVANCED TECHNOLOGY GROUP (ADG) (MSRP $1,995 / INV. $ 1,776)
Quadra-Drive II 4WD System (AWB) (with 3.0L or 5.7L)
Selec-Speed Control (BNK) (with 3.0L or 5.7L)
Skid Plate Group (ADL)
Trail Rated Badge (MT2)
Transfer Case Skid Plate Shield (XEF)
Underbody Skid Plate (XF3)
F. QUADRA-DRIVE II 4WD SYSTEM (AWB) (requires 22P or 27P) (MSRP $795 / INV. $ 708) / with AWY and 3.0L CRD or 5.7L: (no charge)
Elec LTD Slip Differential Rear Axle (DSF)
G. REAR DVD ENTERTAINMENT CENTER (AEK) N/A W/RH1 (MSRP $1,995 / INV. $ 1,776)
(includes Blu-ray/DVD/CD Player) H. SINGLE DISC REMOTE CD PLAYER (RH1) N/A W/AEK (MSRP $445 / INV. $ 396)"
In summary (if you don't wish to read the now 46 page long thread), it appears that the new ANC system on these vehicles is causing a "buffeting", or increased air pressure, effect inside the cabins of these vehicles that is making some people physically ill. GM has bought back several of the vehicles, but so far they haven't pinpointed a cause or fix for this issue. Some owners are duct-taping cotton balls on the ANC mics of their new $70K+ vehicles just to get some relief from the pressure.
In summary (if you don't wish to read the now 46 page long thread), it appears that the new ANC system on these vehicles is causing a "buffeting", or increased air pressure, effect inside the cabins of these vehicles that is making some people physically ill. GM has bought back several of the vehicles, but so far they haven't pinpointed a cause or fix for this issue. Some owners are duct-taping cotton balls on the ANC mics of their new $70K+ vehicles just to get some relief from the pressure.
My Acura TLS has ANC and you would never know its there going from the Type S that has it and the non Type S that doesn't. It's probably is doing its job, but any differences would not really be noticeable on a day to day basis. There are simply too many variables to where it would be impossible to tell the difference (IMO anyway). Any new Grand Cherokee is so well insulated and quiet inside anyway that they will all be very quiet. Maybe some testing equipment can measure the difference but I doubt the human ear could Any 2014+ Summit is going to be an extremely quiet driving vehicle.
My '15 Summit is the quietest vehicle I've ever been in. It's really luxury car noise levels. Another thing besides the ANC is the acoustic glass. Roll down the front windows and see if it looks like 2 pieces stuck together. My summit windows are ridiculously thick.
I test drove both 2014 and 2015 Summit and Overland before ultimately buying a 2015 Summit 1 month ago.
There is definitely a difference between the two, with the 2015 being quieter with the Active Noise Cancellation and Acoustic Windshield. The 2014 was quiet when i drove it, but the 2015 is, without a doubt, the quietest vehicle I have ever driven.
Any of you guys know whether it's possible to adapt a Summit NC module on a 2015 overland? I feel like theoretically you could but would like to know opinions.
Was under the impression that the main role of this NQ system is to attenuate the noise change that occurs when the Hemi activates MDS so that it doesn't sound like a 4 cylinder engine when it operates like one.
Obviously since they still include it with the V6 it must provide some road noise cancellation but from my multiple test drives back to back (Summit to Overland) over various road surfaces at high speeds I didnt really notice much of a difference. Both had same tires as well. These were 2015s, so only the summit had the accoustic windshield.
Already a pretty quiet car, only real source of noise were the crappy GY Fortera tires in both drives.