Power Train Problems of Chevrolet Avalanche - part 1

Chevrolet Avalanche owners have reported 49 problems related to power train (under the power train category). The most recently reported issues are listed below.

car image   Power Train problem of the 2005 Chevrolet Avalanche 1
Failure Date: 01/06/2018

At 80k I put my truck in reverse and heard a clunk sound and immediately it wouldn't shift gears anymore. I went and had the transmission rebuilt which lasted roughly 10k more. Now, the truck won't shift yet again and the filter was changed and the rear output seal. Currently, when I drive since its my only vehicle, one minute it will shift fine but after I turn the engine off and on again, it will not shift from first and the again, check engine light is on!.

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car image   Power Train problem of the 2005 Chevrolet Avalanche 2
Failure Date: 08/12/2017

Driving down county rd stopped at stop sign. Started to take off it started slipping then quit pulling completly. Puet it in all drives 1,2,3, & d nothing happened cut engine off put it in drive it started out like nothing happened for short distance then same thing again.

car image   Power Train problem of the 2007 Chevrolet Avalanche 3
Failure Date: 01/14/2017

Two weeks ago driving 60mph on highway in snow engine light illuminates and lose total power. "reduce power mode" illuminated but engine shut off. We almost got rear ended by a tractor trailer on us 48 in wv. On side of road for 2 hrs in 20 degree weather waiting on aaa (no shoulder on hway) and motor starts. Take it to garage and get throttle position sensor (tps) code ans stabilitrak/abs code. We had accidentally hit the onstar button a minute before this and mechanic thought that was related so he cleared code and sent us on our way. For two weeks we were good andit happened again on highway in rain us 70east this weekend, again in middle of highway. This time car started after five minutes. Took car to dealer and they state the tps needs replacing and front wheel speed sensor broken. There is a gm service bulletin #11273b where gm acknowledges tps issue and covers replacement of tps for 2008-2011 vehicles. Also bulletin pip3089b for bad wiring to tps for 2003-2006 Avalanches. Gm denied my service despite the fact that a 2007 tps and throttle body are the same exact part number as the defective one. This is super dangerous and extremely frequent as there are 550 posts alone on edmunds as well as many reports to https://forums. Edmunds. Com/discussion/5759/GMC/yukon-denali/GMC-yukon-reduced-engine-power-message/p22. Please assist as they are not standing behind a defective and deadly product as the computer cuts total power right on highway. . .

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car image   Power Train problem of the 2007 Chevrolet Avalanche 4
Failure Date: 11/15/2016

The truck would not move; feels as if the truck locked up while driving and came to an abrupt stop.

car image   Power Train problem of the 2008 Chevrolet Avalanche 5
Failure Date: 07/26/2016

Problems with train mission. I'm a 75 year old driver. Bought Avalanche sly model. Great vehicle and driven easy and is garage kept. Have extended warranty from dealer. Transmission starting to bump as if you could have hiit a speed bump coming out of low into second. Was immediately taken to the dealership. They changed the wiring harness on the transmission. Said it seemed ok. As I picked up vehicle. The first traffic light caught and as I started up at a slow take off it was doing the same problem. Will return to dealership in the morning. Wiring harness fluid and filter change. Total repair to date $596. 00.

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car image   Power Train problem of the 2011 Chevrolet Avalanche 6
Failure Date: 07/13/2016

Engine runs rough at idle when engine light, service stabilitrak light and traction control off lights all come on. Upon acceleration, only engine light remains on. Will repeat at lower idle.

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car image   Power Train problem of the 2002 Chevrolet Avalanche 7
Failure Date: 06/15/2016

My 02 Avalanche has had all the fuel, em brake, wheel hub while husband was stopping at light when the top caliper bolt came out wedging the caliper between the wheel and bolt this stopped the truck sounded like gun fire and the rest end went 8 ft into the air. Air bag not deployed. Cost days pays and $ new bolt to get back on road, no injury. Plus drvr fr axle pass too. 2nd tranny only 4yrs apart has failed again with my 6 grkids on my 56th b. D. In TX 105 * heat index. It took 4 hours to get home having to stop every 10 min for 20 min because it was overheating. My grkids were heat exhausted as was I. I have had to replace the short column in my steering and I have been jiggling the key to start it for appx 8 years now. 2 fuel pumps in less than a year the last one was stuck for 3 hours at gas station w/3 grkids while my d-n-law was waiting to meet me 2 hours from her home. I think that covers most of the investigations and complaints and not one did chevy pay for. I didn't bother asking my husband has 2500 school hours in auto mechanic repair. My trim is faded and have to oil it to keep it from cracking. The truck still drives excellent but you people are who I'm going to sue if something catastrophic happens in that truck for your laxidazical attitude in enforcing the safety laws. How much kick back do you receive from the car companies to not recall their cars and trucks? don't be shocked it is obvious big money dictates what gets recalled. People die for the greed of others and that is pathetic. If you enforced the safety laws stricter there would not be people dying or badly mft'd vehicles causing wrecks scaring people causing ptss. I think this agency is all about making people think you do something when you dont, at least not until 600million cars have to be recalled. 2 should be enough. 1 a repair 2 not a coincidence. Thank you, ns. All while driving.

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car image   Power Train problem of the 2009 Chevrolet Avalanche 8
Failure Date: 05/05/2016

Engine dies, door locks start opening and closing, all dash lights go off, radio goes off,car starts on own 3 to 6 seconds, did this at 60 mph and at 15 mph.

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car image   Power Train problem of the 2011 Chevrolet Avalanche 9
Failure Date: 04/04/2016

The contact owns a 2011 Chevrolet Avalanche. While changing gears to the drive position, the gears locked up and failed to move. The contact stated they experienced the same failure listed in NHTSA campaign number: 11v007000 (suspension), but the VIN was not included in the recall. The vehicle was towed to the dealer where it was diagnosed that the rear axle cross pin needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 100,000. The VIN was not available.

car image   Power Train problem of the 2011 Chevrolet Avalanche 10
Failure Date: 12/17/2015

At times when the vehicle is slowing down/down shifting (more common when going up a grade) it will suddenly lunge forward (before coming to a stop) even with your foot on the brake. It seems to happen when downshifting from 2nd to 1st gear and sometimes it catches me off guard. This is a very dangerous situation especially when slowing down near people. I am always concerned that the vehicle is going to lunge forward and hit something or even worse someone. I hope NHTSA investigates this situation as other people have reported the same problem.

car image   Power Train problem of the 2006 Chevrolet Avalanche 11
Failure Date: 06/27/2015

For no reason and without warning, after a "clunk" noise the truck was coasting. Only 1st, 2nd, and reverse gears work.

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car image   Power Train problem of the 2011 Chevrolet Avalanche 12
Failure Date: 02/15/2015

I was driving my truck at about 45 mph when the traction control light came on the dash and my truck suddenly went from 45mph to 20 mph and the motor began to miss fire and buck. If there would have been someone following me they would of hit me in the rearend due to the sudden slowing of my vehicle.

car image   Power Train problem of the 2005 Chevrolet Avalanche 13
Failure Date: 01/27/2015

While cruising on rt 101 at 65 mph, vehicle automatically downshifted into second gear for no reason. In response, I was forced to decelerate to 35 mph. Tried explicitly placing vehicle in third instead of "d" for drive, but, the drive train was unresponsive. Shortly thereafter, a "hot transmission" message appeared on dash and I pulled over and checked fluids. Fluids looked good. Drove vehicle home in second gear without issue. Upon investigation, I discovered that my Avalanche was built with a widely recognized design flaw and undersized transmission. Various sources suggested I file complaint this address: https://www-odi. Nhtsa. Dot. Gov/vehiclecomplaint/index. Xhtml.

car image   Power Train problem of the 2004 Chevrolet Avalanche 14
Failure Date: 11/12/2014

4x4 transmission began locking and slipping. Developed a distinctive "clunking" sound when shifting between gears. Now most noticeable between second and third. Additional grinding sound occurs when driving. Noticeable at all speeds.

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car image   Power Train problem of the 2007 Chevrolet Avalanche 15
Failure Date: 10/01/2014

When the vehicle shifts from 1st gear to 2nd gear around 17mph there is a loud clunk, and it sounds like the transmission is having trouble. It doesn't shift smoothly. After looking online this is a common issue for the Avalanches. Chevrolet knowingly put in a transmission that doesn't effectively do it's job. The curb weight of a Avalanche is 6000ibs and my uncle owns the same truck, which has eaten 2 transmissions so far with the same mileage.

car image   Power Train problem of the 2013 Chevrolet Avalanche 16
Failure Date: 08/21/2014

Recall NHTSA 13voo1000.

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car image   Power Train problem of the 2006 Chevrolet Avalanche 17
Failure Date: 08/01/2014

I purchased the 2006 vehicle used in Dec 2013. In 2014 the transmission went bad. In 2015 I replaced the transmission and brake pads & roaders. 2016 replaced the fuel pump because it also went bad, replaced tires (normal wear), bought a new battery because it died. 2017 it needed two hub bearing and both front wheel hub replaced. This is an ongoing problem with this vehicle! I just found out my air bag sensor will need to be removed and replaced. All my money has been flushed down to this vehicle. I don't recommend anyone buying a chevy truck.

car image   Power Train problem of the 2012 Chevrolet Avalanche 18
Failure Date: 06/16/2014

The steering wheel is difficult to turn or control, went to dealership to fix the problem. After the dealership allegedly fix the problem, we had continued problems with the steering (controlling the steering wheel) and then the transmission caused the vehicle to jump or skip gears, causing the vehicle to be difficult to control. Took it back to the dealership and they were to busy to help us. All of the aforementioned defects caused my husband to lose control of the truck and ultimately flew off the road and vehicle flipped over (roll over).

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car image   Power Train problem of the 2008 Chevrolet Avalanche 19
Failure Date: 06/01/2014

I've had my truck for 4 years now and its been in the shop 5 times due to transmission problems. I've gotten the transmission rebuilt 5 times and its still giving me problems. 6/2014- present day.

car image   Power Train problem of the 2007 Chevrolet Avalanche 20
Failure Date: 02/14/2014

Takata inflators:my air bag light came on, it was reset and came back on a short time after. I have electrical issues with cruise control, radio and fan for heat and a/c. Once in s while I get a smell ofburning wire. My transmission began bumping on acceleration several months ago also when cranking it move forward a bit in park. The transmission bump is when accelerating, the electrical issues are random, the airbag light stays on.

car image   Power Train problem of the 2011 Chevrolet Avalanche 21
Failure Date: 11/13/2013

I own a 2011 Chevrolet Avalanche ltz and at times when the truck down shifts it will lunge forward. I really need to have my foot firmly pressed on the brake to keep the truck from possibly hitting something or someone in front of me. It does not do it all the time and it's rather random. I feel that is worse then it happening all the time because I don't know when to expect it. I have not received any notification of a recall, but I feel a fix is definitely in order. Something is not right and it could result in a crash.

car image   Power Train problem of the 2011 Chevrolet Avalanche 22
Failure Date: 09/28/2013

I was in line at a drive through at burger king and as I pulled up to the cashier¿s window to pay for my food the engine started to accelerate. I put my foot on the brakes as hard as I could while the truck was shaking and lurching trying to go forward. I can¿t say for sure how high the tachometer was, but it seemed to almost peg for a few seconds while this was going on. Finally I jammed the transmission into neutral and the engine returned to normal idle. I say jammed because it took great strength to get it out of drive. For about 10-15 seconds this truck was totally out of my control. I drove away and parked for a few minutes to gather myself as I was visibly shaken. . I was thankful that no one was in front of me in at burger king or that I was not in a parking lot somewhere where someone could have been injured or killed. I had brought this vehicle in more than once to the dealer (rk cheverolet) and complained about the transmission not shifting properly and was always told they could not find a problem. After reporting this they decided to put a device to monitor the computer. I drove around with this for about 3 months and nothing happened and they said the data collected was inconclusive. Since the truck had just went out of warranty they said they could not do anymore. This is totally unacceptable.

car image   Power Train problem of the 2011 Chevrolet Avalanche 23
Failure Date: 09/22/2013

At times while slowing down (close to a stop) the truck will lunge forward unexpectedly pushes the truck forward. This is generally in stop and go traffic. It become very unsafe while the proximity of other cars during this time is very close and could cause injory. This is an intermittent problem.

car image   Power Train problem of the 2011 Chevrolet Avalanche 24
Failure Date: 09/12/2013

I have began to notice when slowing down (foot off the gas and coasting with foot on brake, or brake applied) at any area where my speed decreases to less than 15 mph that my Avalanche will seem to sort of lunge forward. The first time I experienced this I believed it was related to me and ignored it. The next couple of times I experienced this I thought there may be something wrong with the gas or engine. I have spoken with several other owners (who own the same year model Avalanche and suburban - the suburban and Avalanche are made from the same frame/body/parts) and they state experiencing the same issue. I must be cautious to ride my brakes and be read to heavily apply them now when taking an off/on ramp and vehicles are in front of me as my vehicle has lunged forward before with vehicles in front of me. I noticed here that (at the time of this submission) that two other users have reported the same incident. I am hoping that my report here will help open an investigation with Chevrolet on this issue.

car image   Power Train problem of the 2011 Chevrolet Avalanche 25
Failure Date: 05/22/2013

When I am slowing down to a stop the transmission will suddenly make the vehicle surge forward quickly. If I not just as quick to apply a firm brake I risk hitting the car or pedestrians near me which has happen on several occasion. On one occasion, as I was turning into a parking space the vehicle suddenly surged forward so forcefully that it cause the front left bumble to travel outside the planned path and hit a brick column. This problem only occurs in situations when I am slowing down, I. E. Making turns, traffic lights, parking, etc. It can be frightening when it occurs unexpectedly. Recently took into local Chevrolet dealer. They acknowledged the problem and said Chevrolet engineers are working on a fix where the transmission's computer is altered. But they didn't seem confident in the outcome.



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