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Our 2019 Traverse Redline has approximately 7500 miles on it. We are currently on spring break, approx 1500 miles away from home and the transmission has started to noticeably stutter/hesitate while shifting between 1-2, 2-3, 3-4 while under what I would call “normal” acceleration. Obviously being very concerned about the safety of driving 6 of us around in this vehicle, I took the Traverse into a local Chevy dealer yesterday and spent 4 hours waiting. They experienced the same stutter while driving it. They contacted GM and ended up doing a transmission flush and reprogram, which did nothing to solve the problem, and in my opinion, only made it more noticeable. They advised me to drive the vehicle back home (another 1500 miles) and take it back to the dealer I purchased it at, where “Chevy engineering will want to tear the transmission apart to understand what went wrong and likely replace the torque converter and valve body.” Excuse me? A 7 month old vehicle with a rebuilt transmission? I have a call in to Chevy customer support and am waiting for a call back. This is going to get interesting.
 

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The perfect receipe to ruin a nice vacation. Something similar happened to one of our member while on vacation far from home with a 2018 model. Cannot remember who?
 

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We had the transmission in our 2016 2LT AWD basically quit at approximately 1200 km. OnStar diagnosis was engine/transmission failure. Flat bed to dealership. Repair/semi rebuild at dealership by their specialist. No issues from that time forward till when we traded for our 2019 Redline last September. I questioned about a new transmission going in. Service manager told us the “new” unit would be a factory rebuild. He had more faith in his in house transmission guy than a factory unit. He was right. It took a week and a half but the vehicle was fine. Have faith in your dealership to do right by you. Questioning gets you further than demanding.
 

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2018 Transmission shudder

Our 2019 Traverse Redline has approximately 7500 miles on it. We are currently on spring break, approx 1500 miles away from home and the transmission has started to noticeably stutter/hesitate while shifting between 1-2, 2-3, 3-4 while under what I would call “normal” acceleration. Obviously being very concerned about the safety of driving 6 of us around in this vehicle, I took the Traverse into a local Chevy dealer yesterday and spent 4 hours waiting. They experienced the same stutter while driving it. They contacted GM and ended up doing a transmission flush and reprogram, which did nothing to solve the problem, and in my opinion, only made it more noticeable. They advised me to drive the vehicle back home (another 1500 miles) and take it back to the dealer I purchased it at, where “Chevy engineering will want to tear the transmission apart to understand what went wrong and likely replace the torque converter and valve body.” Excuse me? A 7 month old vehicle with a rebuilt transmission? I have a call in to Chevy customer support and am waiting for a call back. This is going to get interesting.
Yikes have exactly the same problem here this past week. At 6500 miles and driving from MN to Fl when it happened. Local dealer did same flush and reset. Shudder initially got better but came back after 400 mi. Good thing it's happening under warranty!! Please let me know what you find out. I plan on taking mine to the dealer next week 2/20/19.
 

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Yikes have exactly the same problem here this past week. At 6500 miles and driving from MN to Fl when it happened. Local dealer did same flush and reset. Shudder initially got better but came back after 400 mi. Good thing it's happening under warranty!! Please let me know what you find out. I plan on taking mine to the dealer next week 2/20/19.

Will do. I’m making an appointment once we are back on Friday. The flush definitely didn’t help things, mayne even made them a bit worse. Waiting for my call back from Chevrolet Customer Service. Will be curious to hear what they have to say about it.
 

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Our 2019 Traverse Redline has approximately 7500 miles on it. We are currently on spring break, approx 1500 miles away from home and the transmission has started to noticeably stutter/hesitate while shifting between 1-2, 2-3, 3-4 while under what I would call “normal” acceleration. Obviously being very concerned about the safety of driving 6 of us around in this vehicle, I took the Traverse into a local Chevy dealer yesterday and spent 4 hours waiting. They experienced the same stutter while driving it. They contacted GM and ended up doing a transmission flush and reprogram, which did nothing to solve the problem, and in my opinion, only made it more noticeable. They advised me to drive the vehicle back home (another 1500 miles) and take it back to the dealer I purchased it at, where “Chevy engineering will want to tear the transmission apart to understand what went wrong and likely replace the torque converter and valve body.” Excuse me? A 7 month old vehicle with a rebuilt transmission? I have a call in to Chevy customer support and am waiting for a call back. This is going to get interesting.
This sounds exactly like what I started experiencing on Friday while driving from MI to Kentucky. I noticed it when I got into traffic backups due to accidents. I'm contemplating bringing it to the dealer near me on Tuesday but sounds like that won't help. This is a 2019 I purchased in November, 7K miles on it.

Add this issue to the leaking heater core back at 4K miles and I wonder why I bothered to buy GM...
 

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Not to beat a dead horse. But new 9spd has a lower gear positive clutch system and automatically drops one gear upon deceleration......doesn't behave or have the feel of older 4/6 spd trannys........clutch engagement with gas acceleration and immediate gear drop with gas deceleration could easily feel like a shudder or "bucking" in slow or stop and go traffic.


Flush alone on low mileage fluid should do nothing to improve, but a computer reset should because it restores all factory servo fill rates and starts a new "break-in" cycle (of variable duration) for the transmission clutch introducing smoother engagement (slippage) to seat the new clutch surfaces. Once cycle is completed, it's back to the old feeling. No idea what multiple resets will do, but even though it may run better for a while....can't be good for long term durability.
 

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On a side note, interesting that 3 people in this thread encountered similar issues driving south into warmer climates.
I live in North East Canada and have had the dreaded transmission stutter on a few occasions. That being said, you are seeing one of the areas that seem to cause this; out of town/highway travel.

As you may know, these new transmission are computerized and continually adapting the to the type of driving that it experiences. 95% of my Traverse's driving is in the city with much stop and go. The odd time that I travel on the highway for extended periods, the shift pattern is different and the Transmission starts stuttering when downshifting to go up hills. When I get back to the city, it stutters in the lower gears for a few days and eventually stops.

From my 18 months and 20,000 kms of ownership, the stutter seems to be related to the adaptive programming of the transmission and usually fixes itself after a few days.

I assume that GM will eventually come-up with a solution (like Ford did with the Focus Tranny) and they'll send a recall or some new Tech Bulletin.

My 2 cents...
 

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Wouldn't wait too long for a a solution to imperceptible shifting 100% of the time under all conditions given the capability of adapting multiple operating parameters for multiple drivers.



Manufacturers try to design a car for maximum gas mileage, competitive pricing, maximum space and comfort, maximum handling and performance, ride of a limousine, and smooth imperceptible shifting no matter where, when, who, and how it is driven and what you got is the best of what you'll get.



Not impossible, just impractical. Smoothest shifting vehicle I ever owned was a '74 Impala Custom 4 speed designed for comfort with such a wicked gear overlap that it gave 6-8 mpg on a good day. Doubtful there is current solution short of buying a Rolls Silver Shadow and hiring a full time chauffeur.


When you pump out 10K units a month each comprised of 10K parts many of which are only tested at MIL-SPEC sampling rates you are bound top get a few duds. Couple this with ignorant abuse like a driver, lot attendant, or "could give a crap" salesman or mechanic not waiting for a sec or so for servo refills for appropriate band pressure after R-D/D-R shifts and either failing to use the parking brake or applying it while still crawling..........and funky tranny $hit will happen.


Complaints from new owners will always find their way to this forum, not much so satisfied owners - viewers who have no questions or comments. A good way to gauge true owner experience with a particular model is to go to a website that harvests information from purchasers and drivers of a particular model, i.e. cars.com, even noticed postings remarkably similar to some in our forum with a tranny complaint. The percentage of 220+ reviews of owners absent problems or complaints who are completely satisfied is overwhelming with a ratings of 4.5 - 4.9 out of 5.0 in listed categories



https://www.cars.com/research/


https://www.cars.com/research/chevrolet-traverse-2018/#mmy-reviews
 

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Wouldn't wait too long for a a solution to imperceptible shifting 100% of the time under all conditions given the capability of adapting multiple operating parameters for multiple drivers.



Manufacturers try to design a car for maximum gas mileage, competitive pricing, maximum space and comfort, maximum handling and performance, ride of a limousine, and smooth imperceptible shifting no matter where, when, who, and how it is driven and what you got is the best of what you'll get.



Not impossible, just impractical. Smoothest shifting vehicle I ever owned was a '74 Impala Custom 4 speed designed for comfort with such a wicked gear overlap that it gave 6-8 mpg on a good day. Doubtful there is current solution short of buying a Rolls Silver Shadow and hiring a full time chauffeur.


When you pump out 10K units a month each comprised of 10K parts many of which are only tested at MIL-SPEC sampling rates you are bound top get a few duds. Couple this with ignorant abuse like a driver, lot attendant, or "could give a crap" salesman or mechanic not waiting for a sec or so for servo refills for appropriate band pressure after R-D/D-R shifts and either failing to use the parking brake or applying it while still crawling..........and funky tranny $hit will happen.


Complaints from new owners will always find their way to this forum, not much so satisfied owners - viewers who have no questions or comments. A good way to gauge true owner experience with a particular model is to go to a website that harvests information from purchasers and drivers of a particular model, i.e. cars.com, even noticed postings remarkably similar to some in our forum with a tranny complaint. The percentage of 220+ reviews of owners absent problems or complaints who are completely satisfied is overwhelming with a ratings of 4.5 - 4.9 out of 5.0 in listed categories



https://www.cars.com/research/


https://www.cars.com/research/chevrolet-traverse-2018/#mmy-reviews
Don't get me wrong, the vehicle is otherwise great, roomy, unmatched power. Just don't get why GM can't figure these things out
 

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Took a lot of engineering to get where they are with the gen2s.....increased size with a stock V6 that develops 25 extra hp than its predecessor plus eliminating the additional parasitic hp drain of a power steering pump. Torque convertor efficiency improved and a low speed clutch necessary for a single shaft tranny with extra planetary gear sets for 3 more gears within the same limited horizontal space. All this and up to 30 mpg highway and 0-60 in lower 6 + sec......must be all figured out at this point given current technology, cost and size constraints.



So, yes there are tradeoffs, most notably in the solid feel engagement/disengagement of the less slippage high efficiency torque convertor and low speed tranny clutches for positive more gear engagement which many find quirky coming from than their older design, smoother, more slippage slushbox ......add the braking assist that drops one gear on deceleration and you get the feel and gas mileage of a manual tranny. actually smoother than a manual tranny because it eliminates the driver's brain from listening to the engine wind up or using the tach to determine when to shift using the ECU brain that shifts much faster and more accurate than any human.



Just finished kicking it around the back roads this morning after dropping off the wife..........I'm still amazed at its performance and handling. Actually more fun and safer to drive than my '15 Camaro with rally stripes and front and rear spoilers which spent most of its time crawling while being followed by County police running my plates and just waiting for me to exceed the speed limit...........now they never look at the Traverse twice.



So an occasional hard shift or stutter in a shift point doesn't/wouldn't bother me and shouldn't for anyone who has ever driven a real manual hooked up to a 300+ hp engine. Want to know if an auto tranny is good or bad?......... R for Reverse, D,L or M for Forward.......then pedal to the metal from a stop and if the car keeps moving forward progressively faster with each shift - whether smooth or hard - no problemo.
 

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Update... GM has determined that the torque converter needs to be replaced. This happens tomorrow, so I will post updates. I’ve read some feedback that an “occasional” stutter isn’t a big deal. Tell my wife that while she’s trying to drive through an intersection with kids on board and the vehicle feels like it may/may not make it through! Clearly something isn’t right.
 

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Update... GM has determined that the torque converter needs to be replaced. This happens tomorrow, so I will post updates. I’ve read some feedback that an “occasional” stutter isn’t a big deal. Tell my wife that while she’s trying to drive through an intersection with kids on board and the vehicle feels like it may/may not make it through! Clearly something isn’t right.
I didn't have any problems yesterday during a couple of hours of driving, both highway and stop/go traffic. It was the climb up the hill to our hotel that had me wondering if I was going to make it as the vehicle jerked and sputtered trying to find the right gear. Of course Chevrolet "Customer Care" took 24 hours to direct me to a dealer I could have stopped at along the way yesterday.
 

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Yikes have exactly the same problem here this past week. At 6500 miles and driving from MN to Fl when it happened. Local dealer did same flush and reset. Shudder initially got better but came back after 400 mi. Good thing it's happening under warranty!! Please let me know what you find out. I plan on taking mine to the dealer next week 2/20/19.
Update... GM has determined that the torque converter needs to be replaced. This happens tomorrow, so I will post updates. I’ve read some feedback that an “occasional” stutter isn’t a big deal. Tell my wife that while she’s trying to drive through an intersection with kids on board and the vehicle feels like it may/may not make it through! Clearly something isn’t right.
UPDATE Same here. The car is now at the dealer awaiting a new torque converter that apparently locks up in the low gears. Car was built 3/5/18 and currently 9K miles.
 

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Took a lot of engineering to get where they are with the gen2s.....increased size with a stock V6 that develops 25 extra hp than its predecessor plus eliminating the additional parasitic hp drain of a power steering pump. Torque convertor efficiency improved and a low speed clutch necessary for a single shaft tranny with extra planetary gear sets for 3 more gears within the same limited horizontal space. All this and up to 30 mpg highway and 0-60 in lower 6 + sec......must be all figured out at this point given current technology, cost and size constraints.



So, yes there are tradeoffs, most notably in the solid feel engagement/disengagement of the less slippage high efficiency torque convertor and low speed tranny clutches for positive more gear engagement which many find quirky coming from than their older design, smoother, more slippage slushbox ......add the braking assist that drops one gear on deceleration and you get the feel and gas mileage of a manual tranny. actually smoother than a manual tranny because it eliminates the driver's brain from listening to the engine wind up or using the tach to determine when to shift using the ECU brain that shifts much faster and more accurate than any human.





Just finished kicking it around the back roads this morning after dropping off the wife..........I'm still amazed at its performance and handling. Actually more fun and safer to drive than my '15 Camaro with rally stripes and front and rear spoilers which spent most of its time crawling while being followed by County police running my plates and just waiting for me to exceed the speed limit...........now they never look at the Traverse twice.



So an occasional hard shift or stutter in a shift point doesn't/wouldn't bother me and shouldn't for anyone who has ever driven a real manual hooked up to a 300+ hp engine. Want to know if an auto tranny is good or bad?......... R for Reverse, D,L or M for Forward.......then pedal to the metal from a stop and if the car keeps moving forward progressively faster with each shift - whether smooth or hard - no problemo.
Understand. I have driven many manual transmissions over the years, but the shudder in my FWD Traverse is more of a bucking - i.e. starting out in second/third gear with a manual tranny from a dead stop. It's like the transmission is hunting for low gears at varying rpms. Also it really bucks after the auto stop/start at intersections.
 

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To those that had this happen to them while on Spring Break, it sounds like you both made it safely back home? Chevrolet "Customer Care" appears to be essentially worthless in providing any real assistance to someone traveling so I imagine my best bet at this point is to wait until I get home and work with my local dealer? The "we are so sorry this happened on your vacation" and " we hope this doesn't leave a lasting negative impression on the brand" only goes so far. O drove 4 or 5 different Subarus over the last 20+ years and NEVER had issues in the first 10K miles (or the first 50k+ for that matter). Heater core at 4K and now this at 8K...lol, amazing.
 

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UPDATE Same here. The car is now at the dealer awaiting a new torque converter that apparently locks up in the low gears. Car was built 3/5/18 and currently 9K miles.

Sorry to hear of your aggravation.


Just a guess....let's see if I'm right.......a new torque convertor in the bell housing of the tranny alone won't do a dammned thing because the 9 speed doesn't use an old tech style locking torque convertor, rather a more efficient design of multiple impeller blades. Lower gear engagement and disengagement in the 9 speeds uses a new locking Sprage clutch system located inside the tranny case which is the likely cause of any harsh shift anomalies in lower gears. This info is in GM pubs I've previously linked to on the new 9 speed in posts on this forum. A software reload might work provided the adaptive controls learns from a single driver which I'm sure the dealer will do in addition to a $1-2K tc swap which will take the credit for any fix that might work.


And with 6 people on spring break.......hope most or all 6 weren't sharing the driving or you really confused the crap out of the adaptive learning function in the tranny computer to make shifts jerk like a someone in a hula skirt doing St. Vitus dance, which may be the real underlying problem. First mistake was taking a car that is still moving to a dealer when out of town on vacation. Chances are they'll be more than willing to screw with it since they get good bucks from GM....waste your time, mess up your vacation....and then tell you to go to your own dealer for follow up after nothing they do addresses the complaint.



If a car still running and moving forward while under warranty you run it until a rod pops through the hood or flames and smoke curl out of the wheel wells.......then no more confusion as to what is broken.......replace everything or new car. Best advice was from Apocalypse now......"you never get out of the boat".
 

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FWIW, I am the only person that has driven my Traverse since taking delivery last November. It's at the local dealer now, they mentioned something about updating computer codes and a tech bulletin. I have low expectations. This vehicle has mostly been driven on flat ground, apparently doesn't know how adapt to climbing hills.
 
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