CarComplaints.com Notes: The fourth generation Grand Cherokee took the relatively trouble-free run of the 3rd-generation and flipped the script.
From 2010 to 2011, complaints about the vehicle not starting increased 10-fold. In fact, the 2011 model year is riddled with engine problems and a defective TIPM might be to blame. The TIPM (Totally Integrated Power Module) distributes power to all the eletrical components in the vehicle, so when it starts acting funny so do numerous other components in the car. Orders for new TIPMs were so abundant that parts became scarce, prompting a class-action lawsuit claiming Chrysler ignored this obvious defect.
By 2012 complaints dropped back down by about 80%. Needless to say, if you see a used 2011 Jeep Grand Cherokee on a lot just keep walking.
My wife drives the Jeep and rarely do I get to. Therefore, it hasn't been my priority to have it fixed (or repair it myself as what will probably take place). She turns the fan very low so as not to hear the high pitch whining when the fan is on. However, everyone that gets into the car asks, "What is that noise". It is extremely bothersome.
I have read on-line some other reports of this problem so it seems to be an issue common with this rig. Too bad it isn't a recall since it first occurred when the Jeep had 30+ k miles on it... past the warranty of course. :( Some say it is due to stickers in the ventilation system coming lose. The sound is as if a piece of plastic or paper is touching the fan blade as it spins.
REPORTED NOISE AND THEY CHANGE CABIN FILTER AND SAID FILTER WAS COMING APART AND CAUSING THE NOISE.THE NOISE IS STILL THERE WILL REPORT NEXT OIL CHANGE.
There is a high pitch noise that comes and goes with the AC/Heat is on. It is very annoying. Took it to dealer and after many test they were told by chrysler that this is a characteristic of the vehicle. Nice to know I paid $40k for a car with an annoying sound that can't be fixed!
Update from Sep 23, 2011: http://www.wk2jeeps.com/tsb/tsb_wk2_2400711.pdf
- lauren0529,
Pottstown, PA, US
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Heat does not work on passenger side of vehicle with high pitch noise when running.
- Amanda G., Sandusky, OH, US