Bulletins


BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
POWER TRAIN
210170502/14/2006210020610019525Flash: 42rle - improved hill climb capability in reverse or dtc's p1713 / p1776. *tt03/24/2006
210160509/01/200510017001Rfe transmission - delayed engagement after an extended off period. *sc10/20/2005
210150509/01/20051001700045rfe/545rfe trans - delayed engagement due to cooler return filter replacement. *sc10/20/2005
210120507/23/200510016026New 42rle variable line pressure transmission (vlp). *tt08/18/2005
POWER TRAIN - AUTOMATIC TRANSMISSION
080300608/25/20060803006A10021239Powertrain control module initialization. *kb03/23/2007
210020612/09/20062100206A10020935Flash 42rle - improved hill climb capability in reverse or diagnostic trouble codes (dtc) p1713/p1776. *kb02/01/2007
210190610/13/200610020543Idle rpm flare cold vehicle operation-revised transmission oil fill level. some vehicles may exhibit slight idle flare at launch. this may occur during cold 25 degrees to 43 degrees temperatures and is most noticeable after extended idling.11/15/2006
210090604/12/200610019940Malfunction indicator lamp (mil) illumination; a rattle-like sound from the torque converter; and intermittent torque converter lock and unlock when in lock-up mode. *tt05/17/2006
210110502/18/2006210030610015066Nag1 (w5a580) transmission - shudder when torque converter clutch engages. *tt05/17/2005
210090310/02/2005210180510003524Automatic transmission diagnostic teardown procedure. various models including the 2004 ram truck, durango, sebring convertible, cherokee, vision, neon, and voyager. *tt *sc10/22/2003
POWER TRAIN - AUTOMATIC TRANSMISSION - CONTROL MODULE (TCM, PCM)
SB-18-014-0911/06/2009SB08-014-09REVA10030347Chrysler/jeep: flash: esp system may prematurely activate momentarily when negotiating a curve or mil illumination due to diagnostic trouble code p0340, p0344 or p0116. this involves selectively erasing and reprogramming the powertrain con09/23/2009
180490712/13/200710023652This bulletin involves selectively erasing and reprogramming the powertrain control module (pcm) with new software. *nj01/22/2008
POWER TRAIN - AUTOMATIC TRANSMISSION - COOLING UNIT AND LINES
1610/01/200510017648Customer satisfaction notification e16 - transmission cooler return filter. delayed engagement when the shifter is placed into gear after the engine has been off for more than 12 hours. *tt11/14/2005
POWER TRAIN - AUTOMATIC TRANSMISSION - TORQUE CONVERTER
180080607/14/2006180230610019750Flash: enhanced torque converter, glow plug, skim operation. *ak04/25/2006
POWER TRAIN - MANUAL TRANSMISSION
210130508/03/200510016600Correct shift tower sealer application to prevent restriction of vent. *tt09/23/2005

Consumer Complaints


Fail datemilesoccurencesPurchase date
POWER TRAIN
11/26/2012703201
 The grand cherokee stalled at a light on a hill. restarted it and but it back in drive but vehicle continued to roll back almost rolling into car behind. stalled 4 more times but in parking lots and non busy roads. took it back to dealer where they updated software on computer and said it was fixed. then stalled on a busy highway and was almost rear ended because vehicle stalled and wouldn't go into gear. then parked it in parking lot and it stalled in park. *tr
11/26/201270320
 The grand cherokee stalled at a light on a hill. restarted it and but it back in drive but vehicle continued to roll back almost rolling into car behind. stalled 4 more times but in parking lots and non busy roads. took it back to dealer where they updated software on computer and said it was fixed. then stalled on a busy highway and was almost rear ended because vehicle stalled and wouldn't go into gear. then parked it in parking lot and it stalled in park.
11/25/201297000
 Tl - the contact owns a 2006 jeep grand cherokee. the contact stated that while driving approximately 5 mph, the front passenger side tire assembly detached from the vehicle. as a result, the vehicle would not move any farther. the vehicle was taken to an independent mechanic for diagnostic testing. the mechanic advised the contact that the rocker arm, ball joints, tires, and the front passenger side tire assembly needed to be replaced. the manufacturer was made aware of the failure and advised that the vehicle was not included in any recall. the vehicle was not repaired. the approximate failure and current mileage was 97,000. kmj
11/25/201297000
 Tl - the contact owns a 2006 jeep grand cherokee. while driving approximately 5 mph the contact stated the front right tire assembly fell off the vehicle. the contact also stated the vehicle crashed in the middle of a intersection. the vehicle was taken to an independent mechanic for a diagnostic testing. the mechanic stated the rocker arm, ball joints, tires, and front right tire assembly needed to be replaced. the manufacturer was made aware of the failure and stated the vehicle was not included in any recalls. the vehicle was not repaired. the approximate failure mileage and the current mileage was 97,000. dr
10/03/2012754243
 While driving my vehicle suddenly shifted gears and coasted as if it were in neutral while rpms shot up to 3,000. it then suddenly lunged forward and picked up speed. the check engine light came on. after a day or so, the light would go off. within the time frame of approx 3 weeks, this had occurred at least 3 times. it was very scary to have it change gears and not be able to maintain speed and suddenly speed up again while traveling with vehicles in front of me and behind me. you essentially have no control of the vehicle in that moment, nor do you have any warning that it is about to happen. drivers around you also have no warning that your car will suddenly slow down or lunge forward. took it to the dealership to be looked at. was told that it was my electronic shifter module and had it replaced. although i have a power train warranty, it was not covered and had to pay over $900. did research online and came across numerous others with the same issue. i feel that if this critical part fails on so many vehicles it should be made a recall. when this part fails, it has the potential to cause many accidents. *tr
10/03/201275424
 While driving my vehicle suddenly shifted gears and coasted as if it were in nuetral while rpms shot up to 3,000. it then suddenly lunged forward and picked up speed. the check engine light came on. after a day or so, the light would go off. within the time frame of approx 3 weeks, this had occured at least 3 times. it was very scary to have it change gears and not be able to maintain speed and suddenly speed up again while traveling with vehicles in front of me and behind me. you essentially have no control of the vehicle in that moment, nor do you have any warning that it is about to happen. drivers around you also have no warning that your car will suddenly slow down or lunge forward. took it to the dealership to be looked at. was told that it was my electronic shifter module and had it replaced. although i have a power train warranty, it was not covered and had to pay over $900. did research online and came across numerous others with the same issue. i feel that if this critical part fails on so many vehicles it should be made a recall. when this part fails, it has the potential to cause many accidents.
09/01/201277000
 Tl- the contact owns a 2006 jeep grand cherokee. the contact stated that while driving 70 mph, all of the lights on the gear shift illuminated and the vehicle independently decelerated to 20 mph. in addition, the vehicle would not respond to acceleration attempts. the contact purchased an electronic shift module from the dealer and had an independent mechanic repair the vehicle. the failure recurred the following day. the vehicle had not been repaired. the failure and current mileages were 77,000. kmj
09/01/201277000
 Tl- the contact owns a 2006 jeep grand cherokee. the contact stated while driving 70 mph and all the lights on the gear shift illuminated and the vehicle independently slowed to 20 mph and there was no way to speed up. the contact bought a part, an electronic shift module, from the dealer and had an independent mechanic repair the vehicle. the failure recurred the next day. the vehicle had not been repaired. the failure and current mileages was 77,000. dt
01/10/201260000
 Tl-the contact owns a 2006 jeep grand cherokee. while the vehicle was parked, the contact noticed a significant amount of transmission fluid leaking onto the ground. the vehicle was taken to an independent mechanic who stated the transmission's electrical connector housing would need to be replaced. the vehicle would be repaired when the part became available. the manufacturer was notified of the problem. the approximate failure mileage was 60,000. kmj
01/10/201260000
 Tl-the contact owns a 2006 jeep grand cherokee. while the vehicle was parked, the contact noticed a significant amount of transmission fluid leaking onto the ground. the vehicle was taken to an independent mechanic who stated the transmission's electrical connector housing would need to be replaced. the vehicle would be repaired when the part became available. the manufacturer was notified of the problem. the approximate failure mileage was 60,000. js
10/13/201176420
 Was going down interstate 40 coming from little rock ark. jeep started to slow down pressed on gas would not speed up. there are so many eighteen wheelers on that interstate.i mananged to pull over.started to shifted from park to drive and drive kicked in. i had two children in the jeep with me .i can not even think about what might have happen if one of those trucks had hit me in the rear. this is a 2006 jeep grand cherokee larado. i have looked on line for recall there was a recall on the 2008 models . the transmission control module . i have been told that is the problem with my jeep.when i made in home this happened again coming down my street in halls tn. got to my drive stop pulling .put in park back to drive made in driveway. i have seen on line this is a problem with lots of jeeps not only mine. please fix this problem before someone get hurt or dies. what does it take!!!!!!! help
08/08/201161257
 While accelerating attempting to merge onto highway vehicle loses all power and transmissions seems to disengage and only coasts. car acts like if i shifted into neutral but gear selected is still drive. check engine light illuminates and engine responds to acceleration but no movement is given by transmission. rpm gauge goes all the way down to idle. had to pull over the side of the road place in park, shut engine off and restart the vehicle then continue. this is a very dangerous and frightening situation, all power is lost and no control of acceleration is given. this is the 5th time in a year time span, this has happened. started at about 50000 miles. this has almost caused rear end collisions as well, please look into this matter. i cannot imagine what other less skilled drivers do especially carrying children or pets very dangerous, needs a recall or sb.
07/06/201164500
 Transmission disengages at speed from drive to neutral. shift lever and indicator remain in drive even though vehicle loses motive power. i thought we were going to get rear ended. i had to pull over to the shoulder and restart the engine to put it back in drive. this problem has occurred three times previously. after checking all the blogs, i see that the switch contacts in the esm (electronic shift module) are prone to failure. the esm/shifter bezel is a $795 part from chrysler.
10/15/200945000
 While driving on the highway, my 2006 jeep grand cherokee laredo, jerked violently out of gear (almost into neutral?) and the engine light came on. the gear lights lit up and i had to manually shift it back into automatic. the dealership scanned the code & determined that it was a bad shifter control module. they said i could continue to drive it for a while but it would eventually need replaced. estimated cost for part $747(excluding $78 in labor). drove it but realized that it was happening more frequently, many times on the highways traveling at fast speeds. almost wrecked several times because the part malfunctioned when trying to slow down when the roads were snow covered & icy. this is a serious & potentially fatal safety problem for myself & others on the road that requires immediate attention. i am uncertain as to why chrysler has not recalled this part or atleast looked into it. i reported it to chrysler only to find out that they had no knowledge of the complaint. ?? there are numerous complaints from other owners that have had the same problem, yet no actions have been taken to remedy the issue. does there need to be a death to obtain a recall? i am certain that i will purchase a vehicle from general motors in the future if there is no corrective action taken.
10/18/201080656
 When driving the lights around the gear indicators will circle all the gears and vehicle drops into what feels like neutral and loses power. then it will randomly drop back into drive. happened a couple of times then check engine light came on. code given was loose ground wire in tranny. dealer fixed. 1 week later happened again and check light came on again. dealer got same ground wire code, took apart again and wire was fine. reset light. still having same problem with shifting and has happened when just engaging to leave out of parking lot then 3 times on hwy at 55 mph. very scary as don't know if going to go back into gear or power loss will cause someone to rear end you at high rate of speed. can't always find a place to pull over and re-engage gears. check engine light came on again today taking it back in for review. why hasn't there been an investigation or a recall? does there have to be a fatal accident to get attention to this dangerous matter? i love my jeep but not enough to die for it!
05/05/201033000
 2006 jeep grand cherokee after starting and putting into to drive the vehicle revved and took off with out the gas pedal being depressed. this has happened three times, with the last incident leading to a severe crash and injury. after the crash and the car stopping the engine was still revving. the incident was witnessed twice by the same person aside from the driver.
10/20/2006300110/16/2006
 Some type of metal rubbing together noise coming from rear of vehicle at slow take off from complete stop. stops after you reach just a few mph. *nm
POWER TRAIN - AUTOMATIC TRANSMISSION
03/04/201155000
 Starting at around 55,000 miles while i would be driving my jeep, the car would stop moving but the engine would rev as i pushed on the pedal. i would not be able to go in drive, neutral or reverse. i would have to put the car in park and turn off the vehicle, wait a few seconds then restart the car. i have had my car at my mechanics as well as a jeep dealership, a total of 5 times, now ready to go back in for the 6th time. each time i am told the problem is fixed and a day or 2 later it happens again. when i call to let the mechanic know i am having the problem again, i am then told that neither they nor the dealership know what the problem is and to bring it back in. leaving me without a car for days. i have spent a lot of money on this vehicle and do not want to spend thousands more fixing a problem that is not fixable. i have 2 small children, and fear that somebody is going rear end the car when is just stops. i have contacted the manufacturer of jeep and was told only certain 2006 jeeps were under recall, mine was not one. all i could do was make a complaint. so i made a verbal and now written complaint, hoping something gets done.
06/01/201050000
 Check engine light would come on (& go off) repeatedly. additionally, transmission would 'jerk' on deceleration just before vehicle stopped (light drivetrain had to catch up with the engine). took vehicle to dealer, who stated there was nothing wrong. returned several days later with same engine light illuminated. dealer kept vehicle for over a week; finally determined a daughter-board on the transmission control module had failed and replaced ($600). two days later, check engine light came on again. returned to the dealer, who (after 3 days) determined that the entire transmission control module had failed ($1000 to replace). replaced entire tcm (which other dealers told me seldom if ever fails). 3 months later, problem returned.
09/02/201077500
 Transmission fails at highway speeds. dashboard says its in drive but when you rev the engine its in neutral. i had to coast off the highway and restart the engine. it worked fine, but isn't it dangerous losing power in the middle of the highway with tractor trailers coming at you at full speed from behind? this isn't the first time it has happened. it happened many times before.
02/01/201079000
 Jeep grand cherokee 2006. while driving car will fail to change gears. very dangerous on expressway. transmission stalls at will.
03/29/201079000
 Tl* the contact owns a 2006 grand cherokee. while driving at a speed of 40 mph, the vehicle seemed as if it would shift gears on its owns. the contact noticed the problem eight times. the vehicle was taken to both a local dealership and a local repair shop to find the cause for failure. the vehicle had not been diagnosed or repaired at the time of the complaint. the current and failure mileages were approximately 79,000.
01/06/20101
 I have a 2006 jeep grand cherokee. 2 months ago while driving the vehicle without warning the vehicle looses power. it seems to drop out of gear. the vehicle cannot accelerate and you have to pull over and hope it will kick back in gear. i spoke with another 2006 jeep grand cherokee owner and the exact same thing happens to him and also one of his friends. i went to edmunds.com and it seems this is a wide spread problem. we contacted jeep and they said sorry it is out of warranty. this is not an isolated safety problem. i hope you can protect the american citizen from the sale and future use of faulty automobiles. these vehicle problems should be address before people die. thank you. *tr
12/18/2009410001
 At a stop sign, short of the cross walk, with foot on brake pedal car in drive waiting for traffic to clear so i can turn right on to the primary street. remove foot from brake and 2006 jeep cherokee begins to move backwards. the is no incline or decline at this stop sign to allow for gravity to move car. had to re-apply brake, put car into park. shut off and restarted before proceeding. this same difficulty has now happened on at least 6 different occasions and dealer reports no mechanical issue evident to cause auto to move on its own in reverse. yesterday, in the omaha world herald paper a story appeared describing an accident with a 2005 jeep cherokee. *tr
09/14/20091500001
 I have a 2006 jeep grand cherokee laredo, 3.7l v6. i have many problems with the transmission, first it was the shifter, second it was a solenoid problem, now i have a shutter and vibration as i am driving down the expressway. i have had it in 3 times now for the same problem. when the tranny starts to vibrate, i notice that the rpms go up about 2-3000rpms. took it back and the repair guy says that jeep has recalled the torque converters for a shutter problem and could replace it up 100k miles. i have over 100k and it will not get fixed under this recall or tsb due to mileage, i think someone needs to take a hard long look at the time that chrysler should have to replace at their expense. this issue has cost me well over $1000 so far and it is back in the shop for the same thing yet again today. *tr
06/23/20081090001
 The transmission in my 2006 jeep grand cherokee has been slipping. i had it checked out and i was told it is ok. then a few weeks later, i take off from a stop light and my engine revs to 3000 rpm and i am losing speed in heavy traffic. then the engine light came on. so i take it to the dealer. they check it out and tell me it is the electronics in the shifter that is bad. i ask what is wrong and the service advisor takes me to the mechanic. he tells me about the issue and says that they have seen alot of these issues and the back order on the part is 450 parts in the negative. i think this is a potential problem and should be investigated for a possible recall. *tr
03/01/20083
 2006 jeep grand cherokee make a grinding noise while turning. consumer states that the mechanic could find nothing wrong with the vehicle. when noise occurred again it also made the entire front panel flash. *kb the dealer informed the consumer the tires had been rotated and the griding noise should cease. the consumer was told the transmission was leaking, so the dealer replaced the o-ring and a bushing. *jb
06/01/2008153251
 I was recently driving on residential road going about 35mph under normal conditions and the automatic jeep grand cherokee laredo 2006 stalls. the check engine light appears. pressing on the gas pedal will rev the engine but it is like the jeep is in neutral. everything else seems to work accept the car is not in any gear. the dashboard indicates the car is in drive. i have to coast off to the side of the road. i turn the ignition off before restarting, then the car seems to run fine for awhile. this has happened 3 times over the last month. the first time i took the car into a local jeep dealer where they could only fine old codes in the jeep computer system noting inactive transmission problems which they since cleared and were unable to do much else. an error code for the o2 sensor was also found and the o2 sensor was replaced. i was told to try it out and let them know if it happens again. that was about 10 days ago. since then i have had two incidents that have occurred over this weekend, i have yet to contact the dealer which i plan to do this week. *tr
01/05/20075000
 Tl*the contact owns a 2006 jeep grand cherokee. while coming to a stop, the vehicle hesitated as if it would shut off. when the contact depressed the brake pedal, the gears shifted and the engine or transmission jumped. the failure occurred every time the vehicle was driven. the vehicle is currently being repaired by an authorized dealer. the vin was unknown. the failure mileage was 5,000 and current mileage was 23,000.
02/22/2008100012/03/2006
 Transmission does not shift down when stepping on gas. most often in the 1200-1500 rpm range. vehicle tries to stay on same gear and is not shifting e.g. from 5th gear to 4th. if gas pedal is stepped on all the way, vehicle shifts down 2 gears, e.g. from 5th to 3rd, and spikes up to 6000 rpm. this takes about 1.5. seconds, leading to dangerous situations when changing lanes, entering a highway, or speeding away from critical situations. already experienced several severe close encounters. the spike in rpm will lead to property damage since the transmission will blow soon. *tr
04/02/200726495103/26/2007
 I purchased a grand cherokee laredo 2006 invoice no. 392118) on march 26, 2007 in tamiami chrysler-jeep, 8250 sw 8 street, miami fl 33144. a few days after its purchase i noticed a little jump when i accelerated, then i carried the car to tamiami chrysler service on april 2, 2007. they informed me that it has transmission problem so my car must remain there for a transmission replacement. of course i am using a rent car but i want my car back. it is too much time (25 days) and their answer: transmission is not available. *jb
04/16/200735800101/13/2006
 Tl*the contact owns a 2006 jeep grand cherokee. the check engine indicator light illuminated. the vehicle was diagnosed by the dealer, and the computer stated that the component etax was failing. the dealer stated that the repair part was on back order. the current mileage was 36,690, and failure mileage was 35,800.*ak
01/10/20061200701/02/2006
 Engine, powertrain, door, dash, gas mileage. *jb
10/20/20066210/17/2006
 We purchased in oct. 2006,a 2006 jeep grand cherokee 4x4, v6 with 5 speed auto transmission, vin 1j4gr48k16c121106. there is a safety problem related to this vehicle and transmission. problem: the vehicle has no hill holding capabilities. in other words, when stopped on a hill, the brake must be held on with your left foot and your right foot on the gas pedal in order to move forward with out the vehicle drifting backward. in all the automatic vehicles that i have owned since 1958, including 1993 and 1996 jeep grand cherokees, none pf them were without hill holding capabilities. the first time i stopped on a hill with this vehicle, i drifted backwords and almost hit the vehicle behind me before i realized what was happening. this to me is a very unsafe condition and something damiler chrysler should be addressing. in expressing my problem to d.c. customer service, i just got lip service. this is why i'm expressing my problem to you in hope that a solution can be found.
12/11/2006312/15/2005
 When attempting to accelerate after a stop, vehicle will only coast after attempting to accelerate. this also happens after making a turn; the vehicle will initially attempt to begin to move then will only coast while gas pedal is pressed. i have almost been in a couple of accidents because people think i am accelerating and they almost run into the back of me. *jb
11/10/200623501203/30/2006
 When slowing down to turn at intersection ,and reapplying gas engine rpm goes up but car doesn't move ,then all of a sudden it lunges forward. this has also happened at complete stop. then tries to go but then jumps forward. which at times it throws you back in your seat. *nm
09/01/200614750309/25/2005
 My 2005 jeep grand cherokee has a serious safety hazard. when the vehicle is started and placed into reverse, on 2 separate occasions, the vehicle jumped approx. 15 feet backwards. also, one time while the vehicle was in drive, sitting in traffic, the engine revved on it's own and it jumped forward approx 15 feet. in all three incidences, the brakes where depressed and where not able to hold the vehicle back. the brakes had to be released and then re-applied to get it to stop. *nm
02/20/2006150602/20/2006
 My wife and i purchased a 2006 jeep wk 4x4 on feb 20 2006. as soon as we left the dealership with 150 miles on it the air bags malfunctioned and had to be repaired. about 1 week after the repairs they malfunctioned again and where fixed again only to malfunction 2 more times and the dealership said there was no problems and cleared the codes. at the 3000 mile service there was an oil leak on the front crank seal which was replaced. it has also been in the shop 5 times due to an engine malfunction light in which case there was a multiple cylinder misfire, the dealership said there where no problems and cleared the code every time only for it to come back on. i just picked my vehicle up from the dealer again because the crank pulley and dampener where wobbling real bad and the check engine light was on again for the same reason. all repairs where made and after i left the dealership 15 miles down the road the light came back on. the transmission shudders when i'm stopped and shifts real hard. the dealership said its fine and there is now evidence of that. all these incidents are ongoing since the day it was purchased. *jb
04/26/200610000110/24/2005
 Dt*: the contact stated the vehicle made a banging noise as the gears shifted. the dealership has inspected the vehicle twice, but has not been able to determine the cause of the problem. when the vehicle was stopped, it would idle very low and eventually cut off. updated 05/30/06. *jb
03/31/200612887108/17/2005
 2005 jeep grand cherokee 6 cyl car was in traffic started moving to 25-30 mph then car started bucking , loosing power as i applied my foot on pedal, no signs of over heating (gauge was less than 1/2 mark of c/and h.. moved from left lane to shoulder with car running it basically was moving at 5 mph as i applied my foot on gas. once in park it idled with some shaking , i tried to move forward with car in drive the car went reverse, i called for help and the nysdot witnessed the car go in reverse with the car in drive. car has been towed to dealership. 12,000 miles. fall of 2005 i had brought the car in for service as i felt that the car wasn't going into the proper gears almost not shifting properly lack of power,dealer couldn't find anything........ *nm
POWER TRAIN - AUTOMATIC TRANSMISSION - CONTROL MODULE (TCM, PCM)
08/13/200717000
 Tl*the contact owns a 2006 jeep grand cherokee. while driving 50 mph and depressing the brake pedal to stop, the vehicle would abnormally lunge forward. in addition, while driving highway speeds, the vehicle would sporadically fail. the contact took the vehicle to a dealer and they repaired the tcm. several weeks later, the failure recurred without any warning. she called the manufacturer and was referred back to the dealer. the dealer stated that if the diagnostic machine did not provide any codes, they could not successfully remedy the failure. the failure mileage was 17,000 and current mileage was 25,000.
12/26/200620000509/22/2006
 Transmission will sporadically choose not to engage allowing the vehicle to free wheel. problem noted mainly after initial start when left overnight and will go away after allowing the vehicle to warm up sufficiently (3-5 minutes). *cn
POWER TRAIN - AUTOMATIC TRANSMISSION - TORQUE CONVERTER
10/03/20065000103/02/2006
 Transmission upshifts and down shifts while you are driving without warning. *nm
POWER TRAIN - AXLE ASSEMBLY
11/08/200713000306/25/2007
 Front and rear differentials. *tr
POWER TRAIN - DRIVELINE
12/22/201053000
 Whining noise coming from back of 2006 jeep grand cherokee; removed drive shaft between transfer case and rear diff-found u joints on each end slightly tight; had new u joints installed (had replaced by a custom shop as jeep driveshafts and u joints are one component and cost in the $1200 range to replace)-my u joints are now serviceable and can be changed at any shop; problem still existed after repair, removed transfer case-no problems there; opened up rear diff and found pinion bearing pre-tension had been overtightened (my mechanic says this was done at the factory as this case has never been opened up prior to this)-gears were still okay but bearings showed signs of stress so changed out all bearings in diff and re-set pinion tension; problem now solved-my out of pocket cost - $1300. this vehicle has 53000 miles on it.
POWER TRAIN - DRIVELINE - UNIVERSAL JOINT
12/01/200622500102/01/2006
 Tl*the contact owns a 2006 jeep grand cherokee. the contact suspects failure in her vehicle's universal joints. when she drives the vehicle, it makes a loud noise and shakes. when she shifts from reverse to drive, the noise stops. the mechanic confirmed that the failure was the universal joints. the part for the repair is unavailable because it is a newer model vehicle and the driveshaft would have to be replaced. the current mileage is 42,963 and failure mileage was 22,500.
POWER TRAIN - TRANSFER CASE (4-WHEEL DRIVE)
09/19/20061400107/01/2006
 Dt*: the contact stated while traveling 17 mph down a curvy mountain road in four wheel drive low, the vehicle jumped out of low gear and sped down the mountain after the rpm's reached 1800. the dealership stated the hemi engine was designed to jump out a gear to conserve gas.