Problems with 2008 GMC Acadia POWER TRAIN

Vehicle has a delayed shift into 3rd and 5th gear, with a vibration felt in those gears. found codes p0717 p0716 for input speed sensor on transmission. it is believed the vehicle has a broken 35r wave plate and need to tare down to inspect or replace transmission at only 63,000 miles. extremely common problem on these vehicles (please refer to gmc acadia forums online everywhere for other victims). *js

The transmission failed climbing a hill with an approximate 10% incline. my wife was transporting two young children at the time at had to turn hazards on while the vehicle crept up a very heavily traveled roadway (us highway 31). this occurred after the transmission was repaired two weeks earlier for the same problem. at that time, i was informed by gmc that it was the input speed sensor. turns out it is transmission failure, which i have since learned is very common with this model. after reading vast entries of many other acadia users with the same problem, i can't help but think that this is a design flaw. i mean, how many transmissions fail at 48,000 miles. i'm just glad my wife wasn't driving at night, on a long trip, or on the interstate, which would have left my children and her in a very vulnerable position. for the price of this vehicle, i would expect reliable usage up to at least 100,000 miles. in my opinion, because of reliability issues and the shear volume of people with the same problem, gmc should recall these vehicles and replace the transmissions with what they are now installing on the newer models. the fact that they have improved the transmissions on newer models proves there is a flaw with my model year. why else would they correct it. thanks for your consideration. *tr

I was driving and it just stopped shifting/going anywhere. the engine light came on. then it started going again and then stopped again. i took it to the shop, and i was told it needed a total transmission overhaul/rebuild. a transmission should last longer than 80,000 miles. we paid good money for this vehicle and i would expect better performance. gm needs to stand behind their vehicles.

Tramission is running hot (sends message to idle engine) then check engine light comes on and temp fluctuates up and down. then car will not shift into gear it's like it's in neutral. about 50 miles later it starts all over. *js

While driving on the highway, going 60 mph, my car lurched forward and made an awful sound. the car completely slipped out of gear into neutral. the gas would not work. after coasting down a hill we were able to pull over.thank goodness no one was behind us. we turned off the car and were able to restart it, but the maximum speed was 40 mph-and that was pushing it, the rpms were revved so high. we had called a tow truck.

I bought the 2008 acadia new in june 2008. it just came off the 5 year 100,000 mile powertrain warranty (81k miles) and the transmission began to slip. i have read numerous cases where the defective part is the wave plate. it appears common in 2007 and 2008 acadia, buick enclave and saturn outlook. gm rectified the problem by using new parts in 2009 and newer models. gm should be forced to issue a recall. in this day and age transmissions should not have problems at the low mileage that has been identified in countless nhtsa complaints and social media forums. *tr

my gmc acadia had the transmission fail and it will cost me $4000 to put a new one in. i am finding out that this is a common occurance in the acadia at fairly low milage.

Transmission went out without any warning. i had my 3 kids in the car while going up a steep hill amongst other traffic. *tr

My transmission started to fail while driving at a high rate of speed on the highway. the vehicle was getting stuck between gears as i was traveling up hills. transmission failure is a very common issue with early acadia's (with low mileage) and a recall needs to be issued. i have taken it to the dealer who recommends a complete transmission rebuild or replacement. *tr

Vehicle experiencing bad transmission problems when shifting between 3rd and 5th gears. as accelerating, the vehicle begins to shift, but begins to idle and rpm's rise extremely high. vehicle begins to slow down and finally jerks into the next gear causing rapid acceleration. this issue almost caused me to run into a car in front of me after pulling off from a stoplight. it is extremely scary to continue to drive the car, but with this being my only vehicle and i must work, i am forced to drive daily. warranty just expired 5 months ago in march and i cannot afford to fix the problem (march 24, 2013, 5 year/100,000 mi. powertrain). vehicle was purchased march 24, 2008. *tr

I was driving to work and noticed a shutter while accelerating and took it to dealership. the transmission failed and the dealer said it was a wave plate failure. *tr

Transmission failure, no reverse only low range, no warnings until failure. *tr

I was driving on the interstate and it just stopped shifting/going anywhere. the engine light came on. then it started going again and then stopped again. i drove home and took it to the shop later that week. it needed a total transmission overhaul. a transmission should last longer than 72,000 miles. we paid good money for this vehicle and i would expect better performance. gm needs to stand behind their vehicles. i don't expect a full refund for my bill, but i do expect some substantial assistance. *tt

We bought our 2008 gmc acadia in january 2008. the battery died in july 2008 while vacationing in canada leaving us stranded. after it went dead several more times the dealership replaced it. the air conditioning went out several times in 2010 and we had to pay to have the ac recharged twice since. in july 2013 we had to have the transmission replaced when it stopped shifting into gear. our warranty had expired in january of that year. the dealership did get gm to pay half but it still cost us almost $2,000.00. now it is at the dealership again and we have to replace the entire steering column as it lost power steering at low speeds. we are having it repaired at an estimate of nearly $1,800.00 more. this vehicle cost about $36,000.00 in 2008. since then we have paid thousands of dollars just to keep it on the road and safe. this is a lemon and i would like to see a recall for both the transmission and loss of steering at low speeds. i see that both of these are common problems with this vehicle. i would like to be reimbursed for our expenses. *js

We live in camarillo ca. we left to go to sacramento for my daughters college orientation. about two hours into the first leg of our trip the dic informed us the transmission was overheating and the car should be idled for it to cool off. we did just that. after it cooled off we began driving again. it did this once more before we arrived in san luis obispo. we left the next day to sacramento. again about two hours into the drive the same thing occurred. we idled the car, trans cooled off and we got under way again. it did this once more before we arrived in sacramento.. while in sacramento it drove fine. on our return trip it did this twice on the way home. after looking back it seemed to do this when we were going up an incline. we were not towing anything either. we were lucky that while on the freeway when we received the overheat notice that the car did not lose power and slow down while on the freeway in traffic. this is the third transmission for this vehicle since we purchased it in 2008. *tr

At driving speed it was noticed that acadia began to fail to shift gears, basically on highway it is stuck in first gear and after finding a place to stop, it will now not go into reverse. have found the edmunds, ask and numerous other sites are full of transmission complaints concerning the 2008 acadia and it's failures. this transmission has had minor issues in past, minor leak and some whining, but this is a complete and hazardous failure while driving in traffic. i have since learned that this is a common and known issue to general motors costing the consumers approx. $3000 to $3500 per instance. is there nothing to be done to assist the consumers? *tr

I was driving my acadia to work on monday morning and it started having transmission problems, it would not shift in the lower gears and would rev up to 4-5 rpm between gears. i drove it to a transmission shop the next morning and they diagnosed it, needed a whole new transmission. upon leaving the transmission shop, it completely stop moving, causing me to roll to a complete stop on a highway. i got it pulled over, stopped the vehicle and restarted it. i was able to drive a block or so before it stopped again. i was stranded and stuck in the middle of the road. i was finally able to get it to a parking lot and had it towed to a dealer to look at. *tr

3/5/r wave plate transmission failure - i was traveling out of state and my 2008 gmc acadia stopped in it's tracks without any warning. vehicle was running, but it would not move. i was stranded on the side of the road, at night with 3 young children, over 5 hours away from home. vehicle was towed to the dealership the next morning and 3/5/r wave plate failure was determined, new transmission required. less than a week prior to the cross country trip, vehicle was at dealership having oil change and other preventative maintenance completed, no issues noted at that time. major safety issue that needs to be investigated. *tr

Traveling on the interstate with my 3 year old daughter when transmission failure message came on. has come on multiple times, requiring me to pull onto the shoulder of the busy road with semis speeding past. gmc is aware of this issue, yet refuses to address it on a large-scale. someone is going to get killed before they actually come to action on this manufacturing defect!!! *tr

We are a family of 5 driving along the highway when the check engine light came on. we stopped and put the car into park. when i went to put into drive, the car would not engage. finally after a few minutes we were able to get the car going again, but the car would not shift itself (automatic transmission). we then had to drive along the side of the highway for 13 miles to the next town with the hazards on at 20 miles per hour. went to a chevy dealership and after they read the codes, there appears that the transmission is completely out. we were more than 800 miles away from home on vacation in missouri. the car is still in missouri at the dealership, as they will not be able to take the transmission apart until early next week. *tr

Complete transmission failure due to 3-5 wave plate failure. *tr the consumer has an issue with the head restraints in the new acadia's. he stated the eight passenger vehicle only offers four adult head restraints. updated 06/03/15.*jb

About a week ago my family and i were driving home from vacation and had been on the road for about 3.5 hours. as we pulled out of a driveway about 5 minutes from our home the car engine light came one, the car would not gain speed like normal and it began to over heat rapidly. we took side roads and slowly crawled home. i took it into the shop the next day and it came back with a crack in the radiator and codes p0700 and p07016, which they confirmed to be a transmission issue and suggested to have a specialist look at it. i did some research and found that this are common codes that come back for the 2007 and 2008 acadia's that require a rebuild/replaced transmission with an average cost of $4000. this is a known issue with gmc for many years and they have yet to acknowledge it. i am very lucky to not have had a worse incident in discovering this issue, but i am very concerned that at any moment the transmission will go out, and we do not have $4000 to drop into a new one, especially when i just spent $650 on a new radiator. these are not problems that a reliable car, the 2008 acadia, under 100,000 miles should be having. gmc needs to own up to these issues and take action to correct it before something more serious happens. *tr

i was at my son's baseball game and went to move my vehicle when i was pulling out of the parking lot and the vehicle started revving and would not move other than coasting (since i was on a hill). i was 3 hours from home and had to have the vehicle towed to the tune of $300.00 +. i have since had to have the transmission replaced. this has cost over $4500.00 not to mention having to drive 2 vehicles with my family since the acadia was the larger of our vehicles. *tr

While my wife was driving our 5 children on the highway the truck stopped on her. she was able to restart it but only drive about 40mph while the rpm's were redlining. the reverse went completely out. she ended up having to push the truck by herself with all the kids inside. the dealership says the transmission is bad, it'll cost $2600 to repair. from reading the forums it's obvious there is a problem with the transmission with this particular truck. we are very fortunate no one was injured. *tr

As i was pulling off of the interstate onto rockville rd i noticed that the car upshifted from 3rd very violently. i then hit a stop light and it dowshifted pretty rough as well. i thought uh oh and noticed the check engine light come on. when i pulled away from the light i noticed the car was most likely stuck in 3rd gear as the rpms matched the mph and from driving a stick all those years they made sense. i later found out this was done on purpose to stick the transmission in 3rd gear to further damage it and allow you to continue to drive. i got to work and had onstar run a diagnostic. it came back with a p2715 code for the transmission control. after looking into this code it appears to involve the 3-5-r waveplate that controls the clutch for these gears. i, of course, am 6 months out of warranty on the drive train. after confirmation with gmc it was the wave plate. this appears to be a common problem cropping up with this transmission when you look around social media. *tr

Tl* the contact owns a 2008 gmc acadia. the contact stated that she attempted to shift gears but the vehicle did not respond. the vehicle was taken to a private mechanic, who stated that the failure was caused by a faulty wave plate in the transmission. the vehicle was not repaired. the failure was not reported to the manufacturer. the failure and current mileage was 62,000.

While in traffic, my engine revved up and my vehicle jolted forward when my transmission stopped working. if anyone would have been behind me, there would have been a major accident. *tr

Bought this life altering mess of a vehicle in june 2013 with 77k miles. since that time a wide spectrum of issues have arose and cost me for than just money. windshield wiper quit working and needed to be fixed (i now see that was a recall) constant electric issues in using beeping, lighting up at inappropriate times, not registering a grown adult in passenger seat. also, leaking transmission fluid. gm did cover that charge which was no help with the rear end that had to be replaced at a cost of nearly $3000. transmission still (before leak "fixed") and after will read idle transmission hot at many times. leaking water when we receive heavy rains. leaking comes from drivers side airbag "label") i have been financially strapped because of this vehicle i had worked and saved so hard for just trying to keep my job! i need my vehicle to work and my life is at risk when i'm forced to get behind the wheel because of these issues that gm is aware of. with the money i've spent (i'm a single working mother with two young sons) because of gm turning a blind eye i am in dire need of the proper resolution to this year long devastation of preventable events. please assist me in this fore i'm unable to go further with continuing to fix problems that thousands of other owners are having with the same vehicle. thank you. in 2011 my children and myself lost our home to a devastating flood that rocked our city and as of feb 2014 we were finally able to move out of the camper and get a home. i cannot prevent a flood and all the pain it caused myself and my children but i will not cease to fight for what it right. that is replacing my vehicle with equal, reliable safe vehicle immediately! after all, this was completely preventable and should've been fixed before now. please help me. thank you for your time. *tr

My transmission failed on my gmc acadia at just under 62000 miles. as i understand this is a very common occurrence with the model year and could easily cause a major accident. when mine failed, i lost all power to the wheels. had i been in heavy traffic, it most certainly could have caused an accident. gm needs to recall these vehicles. *tr

Transmission on 2008 gmc acadia stopped working. towed to lehmer's gmc in concord, ca. advised that transmission must be rebuilt or replaced. *tr

I have experienced multiple issues with my 2008 gmc acadia my first problem was with the transmission having to be replaced. which just barely was covered under the warranty i had after buying the vehicle used since that first incident i have had continual problems. my engine will stay running after the key is turned to the off position and the key is removed from the ignition the car continues to stay running the engine does that is all other lights go off no radio or ac stay on. i have had it in the shop different times no one can correctly diagnose and fix the issue. i am now watching the tow truck hook my car up to be taken to the gmc dealer which is going to cost more than i am sure i can afford to pay as a single mother trying to make ends meet. so besides the engine running with no key in it. it also kills the battery drains it when it sits. i have also had issues with the wiring harnesses to the head lights melting to the back if the bulbs having to be replaced costing over $200. there has to be some kind of electrical issue with this car there seem to be many people on here with similar issues with transmission and odd issues. please help i can't afford this car and the continual issues. *tr

On a trip from texas to colorado our transmission failed. driving on saturday - transmission was acting funny. stopped for night - got up next day to pull out of parking lot onto highway and transmission slipped out of gear - couldn't get it back into gear - managed to steer to right hand side shoulder. could have been disastrous if i had made it out onto highway with cross-traffic coming. looking on edmunds.com it seems this is a very persistent issue with gm acadias & buick enclave gm models. *tr

On june 19, 2013 i was driving my 2008 gmc acadia from my home to work. i needed to turn right from my residential side street onto a major four lane highway. i had a red light but could turn right on red if i yielded to oncoming traffic. there was a car approaching traveling the same direction as i was turning but i knew i had sufficient time to turn and accelerate before the car reached me. as i was turning right from my side street onto the highway, i pressed the gas to accelerate and the car began to move forward but at a very, very slow pace, the engine began to rev very loudly, and the car was jerking very badly. at that point i was fully on the highway but could not accelerate my car. luckily there were no cars in the far left lane of the highway, so the oncoming car was able to change lanes and avoid rear ending me as he was traveling approximately 55 mph and my car would not get past 5 mph. even though there were no warning signs indicated on my dashboard, such as the check engine light, i took my car to the repair shop that day as i knew something was very wrong with it. i have been informed that the wave plate on my transmission has gone bad and i need an entirely new transmission. it is my understanding this is a very common problem with this year and make of car. *tr

Tl* the contact owns a 2008 gmc acadia. the contact stated that while driving approximately 20 mph, the transmission failed with the illumination of the transmission warning indicator. the vehicle was towed to an authorized dealer for diagnosis where the contact was informed that the transmission clutch plate would need to be replaced. the vehicle was repaired however, the failure recurred three months later. the vehicle was taken to a second dealer, where the contact was awaiting the rebuilding of the transmission. the manufacturer was notified of the defect. the approximate failure mileage was 72,000.

I recently purchased a 2008 gmc acadia in april of this year. on june 16th my husband and i did not get any type of warning before our vehicle completely stopped because the engine light did not come on until after it made a loud sound right before quitting. it was a good thing that my family and i were on a back road when this happened or there would have been some fatalities. the vehicle would start afterwards but would not pull in any gear. we contacted a mechanic and he informed us that he had worked on plenty of acadia's with the exact same problems and when he checked our vehicle it was no exception. our reverse function was completely gone out in the computer system and the transmission had to be rebuilt. i called the dealership to see what they could do since they told me that they did a full service/five point inspection on my vehicle and found nothing, but they said there was nothing that they could do to help. i have searched the internet for similar problems with this make and model vehicle and have found plenty of disappointed customers, so i feel that the problems with this vehicle were not disclosed in transparency and causing families safety and financial strains. i have contacted gm and they said that there was nothing that they could do because they didn't know about the problem and that only gm forums were a reliable source, even though i received their email from a non-gm forum where they told consumers to contact them with this particular problem. they told me that i had a headlight recall on my vehicle and should get it fixed, even though my vehicle was down at the time. they are being very insensitive to this issue, and a family is really going to be hurt in this vehicle if they do not take this matter serious. *tr

We were driving down the road and all of the sudden the car made a loud roaring noise like someone was mashing the accelerator to the floor. the transmission seemed like it did not know what gear it was in hence going from 50 mph to 30 rapidly could have caused a serious accident. had i been the middle of an intersection or pulling out into traffic it could have caused a life threatening accident. we contacted onstar and the codes indicated transmission problem of a broken wave plate. code p2715 the acadia will not back up at all. there are numerous blogs of people having the same problems with the acadia's wave plate ranging in the year of 2007-2009. seems like it is a really bad design and not strong enough for this type of suv. i can not understand why gmc is not recalling or offering to pay to fix these faulty transmissions. i am about to be out $4,000 because i have no warranty left and gmc and carmax are not willing to help. i have only had this vehicle for 4 months and it only has 93,000 miles and it makes me sick because the 5 year 100,000 mile warranty was out in january. i am ashamed for gmc not wanting to make it right and that our safety is of no interest to them. gmc claims i don't have a strong enough business case because i bought from carmax and not from a certified gmc dealer. i previously owned a chevrolet trailblazer and didn't have this many problems and it had 130,000 miles when i sold it to get this one. i don't think i will be buying any gmc product again since they apparently don't have enough faith past 5 years for a transmission or engine which is pitiful for an american owned company. now we are not able to go on our yearly vacation thanks to gmc and their unwillingness to back their products that they know are faulty. thank you for listening to my valid complaint and my concern for everyone's safety who owns an acadia. *tr

Tl* the contact owns a 2008 gmc acadia. the contact stated that while driving 20 mph, the vehicle failed to accelerate. the vehicle was taken to a dealer for diagnosis and the contact was informed that the third and fifth gears in the transmission had failed and the transmission would need to be replaced. the vehicle had not been repaired. the failure and current mileage was 50,000.

Transmission failure immediately followed by engine failure after the transmission was replaced. *tr

We purchased our 2008 acadia in 2011, it had approximately 30,000 miles on it at the time of purchase. less than thirty days after purchase we had to replace the front rotors. at 40,000 miles we had to replace the front brakes; the air conditioner backed up, which required maintenance to the blower motor; and the head lights went out, which required replacement. at 45,000 miles the rear struts went out, which required replacement; and we had to replace two tires. at 60,000 miles the water pump went out and needed to be replaced. at 55,000 miles the front struts went out, which needed replacing, along with four new tires, and a new set of headlights. at 60,000 miles the rear brakes and rotors needed to be replaced. at 70,000 miles the transmission went out, which also required replacement. the final incident happened on 6/10/13 at 74,000 miles, while i was driving with all three of my children. i was going 50 miles an hour on a highway, and the entire car shut down. the steering console locked with the keys in the ignition, i had no ability to steer the vehicle, the brakes did not function either. i had to use the parking brake to slow the vehicle down, barely avoiding a collision with another vehicle.

The transmission would not shift into third gear. took to dealer. they were aware of the problem and "offered to help" by discounting the price of rebuilding the transmission. the transmission is still not right. shifting is poor and clunky. *tr

1. transmission going out at 67k miles and appears to be very prevalent with this make and model of vehicle. very dangerous as the car will not go into gear at any given time and basically leaves you stuck in neutral in the middle of a busy highway. 2. service air bag light stays on after dealership claims to have fixed the problem. if in a crash, have no idea if we will be protected. not a comfortable feeling. *tr

While driving on a highway, the car went into neutral and lost power. after a few seconds, it went into low gear and would not shift into a higher gear. the transmission required a re-build two years earlier at 62,000 miles and is now failing again. we were told the transmission must be re-built yet again. we cannot drive the car as the loss of power and slipping transmission is very dangerous. the transmission design, and the subsequent repair by the dealer, was faulty. as our warranty expired 4 months ago, we were a new transmission was required at $4,000. *tr

While driving at about 45mph, the vehicle lost power to the wheels, the engine raced and the transmission appeared to fail. the vehicle was shut off, and restarted with only 1st and 2nd gear available and was moved to safety. the problem occurred at approximately 55,000 miles. a p0776 code was pulled from the computer and the gmc dealer checked the problem and concluded that the 3,5,r wave plate in the transmission failed and will require a full rebuild. with the numerous complaints about this specific problem, i'm very disappointed in gm for their lack of customer support in what appears to be a manufacturing defect in the 6t70 transmissions, as this issue is occurring in 2007-2009 gmc acadias, buick enclaves, chevrolet traverses and the saturn vues. do something gm! *tr

There was a "clunk" upon acceleration from stopped, soon after vehicle would not move. wave plate was destroyed in transmission causing a need to be rebuilt, as so many, if not all others in 2007-2009 gmc acadias have been. out of pocket cost to me is $3,500 because gm used a $2 part instead of an $8 part. this is an huge safety issue that is stranding people, mothers with children, in dangerous situations, all the while, gm is well aware of the problem and solution but refuses to step up and take responsibility for it. there needs to be a safety recall for this issue. *tr

The car transmission has failed as soon as the car turned 5 years. the car has been rarely driven. after checking with many garages i have found that the gmc acadia 2008 model has a been known for transmission failures by design and it is not an isolated case. this is a rip off. *tr

Transmission blew. *tr

I was driving my 2008 gmc acadia along with my sister and her two god children. we were at a red light and proceeded to go when the light turned green. got up to 20mph and the suv jerked severely. once it jerked the suv would not go over that mileage. we were all scared! i took them home and drove to a gm dealership. i paid $114.00 for a diagnostic test and was told they did not know what was wrong. they speculated that a wave plate broke or moved. they advised in order to know for sure, i would have to pay 900.00 plus for a deeper diagnostic! i'm under my 100k mileage and no one is honoring that. i'm a mba student and don't have that kind of cash! i've only had this suv for 3 years. i bought it used, had only one owner before me, and it was under 20k miles. sounds like gm's product is not reliable and they do not stand behind their product. i tried to buy an american product to put help our economy and this is the repayment for it! i'm going back to foreign cars, i will never purchase another gm built vehicle as long as i breath! *tr

I purchased the gmc acadia from a dealership in kaiserslautern germany in may 2012. by april 2013 the transmission completely stopped working. at first the suv would jump gears 6-3 sometimes 6-1 while moving at speeds higher than 35 mph. i have 3 young children and the result of such sudden shifting could have caused whiplash and did cause fear. i took the vehicle to auto schneider in weiden germany who identified the speed sensor as the problem via the computer and replaced the part. by 10 may 2013 the vehicle was completely immobile. i conducted research and have found over 1000 entries specifying that people have had to replace the transmission around 70000 miles, and sometimes twice, with gmc covering 0 costs. as a us service member i believe that the nhtsa should monitor complaints on other sites and investigate poor mechanics especially when tax dollars were used to rehabilitate gmc in 2008. anytime there is a mechanical failure in a vehicle's transmission it can cause incident. *tr

On occasion, our 2008 acadia would not shift out of low gear when first attempting to drive. the tac would rev to 5-6000 rpm at a max of about 20 mph. we would need to pull over, turn off the vehicle, wait a few minutes and restart. at this point everything would be fine with the exception of the check engine light being displayed. at first this would happen very rarely. it then began to happen more frequently. the last incident was very scary for my son, a new drive. he attempted to pull out into heavy traffic on a street with a 50 mph speed limit. the vehicle would only go 20 mph and there was no shoulder for him to pull over. we took it to the dealer and they diagnosed the problem as a failed wave plate. and from what i have been reading, a very common failure. the repair involved a transmission rebuild and cost us $2,800. gm refused any compensation. absolutely ridiculous that a company would not stand by an obviously defect issue in its product. *tr

While driving down interstate state at 70mph i came up on slower traffic and had to slow down to 60-65mph before i could change lanes. once changing lanes and as i went to accelerate the vehicle seemed to downshift and rpm went from 1800-2000 to 5000 and the vehicle basically stalled for about 5 seconds causing a 18 wheeler to basically all but wreck to keep from killing me and my other 5 family members in the vehicle. i pulled over at the next exit and made sure there was no kind of transmission codes or anything to show up on the dash but i still checked my fluids and everything checked to ok. i had 325 more miles to get home so i basically had to baby it to the house. it happened several more times during the trip but that was the worst. i have also experience on several occasions that the airbag in the passenger side front seat turns itself on and off for no apparent reason with the same individual sitting in it who weighs 130lbs. at first i just thought it may have been the way they were sitting but i weigh 200lbs and it did the same with me. i'm hoping to get these problems resolved by dealer tomorrow but with so many transmissions doing the same thing the gov & gmc need to take charge of this issue and get the [xxx] problem fixed before more people have issue and get killed or injured. *tr information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6). *tr