HELP!! Transmission/shifting issues...
Hello all. New to this forum. Just purchased a 2007 Grand Cherokee Limited, 5.7 Hemi, 4x4 w/ Quadra Drive II. It had 71,500 miles on it when I purchased it. Literally in mint condition with every option. I've had it about 2 months and only have 2,000 miles on it. Installed OME HD springs and Bilstein struts for a lift and some good tires/wheels. Truck has driven perfectly and only taken off road twice. Just wanted to give the background...
I just drove 3 hours from the Phoenix area up to Pinetop, AZ last night and as I got in to town going down the street at 45 mph or so the transmission "clunked" a couple of times. It stalled pulling out of a parking lot as well. Check engine light came on, Electronic Stability Program light, and Electronic Throttle Control light is continuously flashing. The owner's manual says the flashing throttle control warning light indicates immediate service required. Could that be tied to a throttle body issue? I pulled in to O'Reilly's and they checked the codes. I am getting the following:
U0184 - Lost communication with radio
C121C - Torque Request Signal Denied
P0129 - Barometric Pressure Too Low
P0884 - TCM Power Input Signal Intermittent
Granted, I am at 7,000 ft elevation, but I still can't imagine getting a Baro pressure too low... My Ford Explorer never had those issues. The transmission/shifting is behaving more erratic now. Just driving down the side streets near the cabin it behaves very weird. I drove the 5 miles to the store and it seemed fine when I was doing 50 mph, but it had got a little worse after that. I had done a little research and it seems that simply cleaning the electronic shift module could help? I know it was pretty dusty last time we went off road. I figured I could at least do that at the cabin up here and see if it works enough to get me back to Phoenix. When I disconnected the battery this morning and reconnect I also heard a rapid clicking noise up near the passenger side firewall. That noise has been there before, but it appeared tied to the A/C. When I when turn recirculation/max ac on it would go away. I figured it was the blender door.
So, not sure what is really going on here. Any help would be appreciated. I guess I should have bought the extended warranty from the credit union with my loan for $30 a month! But, I am still allowed to add that.