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Chevy Tahoe Transmission Problems

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  • I'm new to posting on sites such as this, but took the time to register b/c I'm really getting upset. I had around 17,000 miles on my 2007 Tahoe LTZ when, while accelerating up a slight grade, I heard a loud BANG, tach wrapped around as I quickly let foot off of accelerator and then I was done - nothing! I turned vehicle off, resarted it and was able to "limp" home (less than a mile) in low, though I did hear a high-pithced whining/vibration a few times during this ride. Same response as some of the other comments - argued that transmission should be replaced, but dealer said Chevy wouldn't do that on first repair. Two weeks later I got it back with a replaced forward sprag clutch, as I was told. I had taken it in just before this to have a sensor of some sort replaced on the transfer case when the message board indicated this was necessary. Message board had told me to return for service again just before I lost tranny entirely. Have around 21,000 now and we're back in the shop - slipping, occasional grind, high-pitched vibration on hills, etc. I have contacted Customer Service and have a rep calling me now, so I am hoping for a replacement, but sounds as though a new one may not be much better than what I have!
  • WOW!!! That is the worst I've heard on tranny problems with the 07 Tahoe. After a trip in to the dealer one time I haven't had another problem. I have added another 6k miles. Problems can come with any mechanical machinery. The difference is in customer service. Hopefully GM will step up to the plate and handle these problems quickly with little inconvience to the customer. Keep on them and don't give up!
  • jerrywimerjerrywimer Posts: 588
    That sounds pretty bad, for sure. But it's hard to take this instance and associate it with *all* 07s. This tranny has been around quite a while, with only tweaks and refinements over time (after the more major change to electronic control). The 4L60E has "been around the block", as many competitors with more than 4 gears in their vehicles love to point out for us GM owners.. :surprise:
  • jochampjochamp Posts: 3
    I have a 2007 Tahoe LT 4x4 bought new. I had noticed the transmission slipping, but it would then go back into gear. I mentioned to the service tech a few months ago and he said to make sure it was in 2wd rather than auto. I had a 2004 LT 4x4 and never had this issue. This past week I was driving down a busy main road and I heard a loud slipping noise and the car lost all acceleration. I was able to coast onto a side road and call the dealer. Three days later I am told it is a sprag [sic]. They are going to take a part the transmission and repair the part. The car has 9780 miles on it and I am concerned that a main component is being taken apart and put back together. Would anyone have any suggestions as to when and under what future circumstance I should demand a new transmission. I am now not feeling good about the warranty running out after three years.
  • tahoetiredtahoetired Posts: 2
    Can't hit ENTER too soon! Sorry about the first two tries. You have seen my initial complaint above. Anyway, just wanted you (and everyone else)to know that I, too, was told that my problem was the "forward sprag clutch". The mechanic said it appeared as though it just disintegrated. The bad part is that no one knows why, so, of course, there is no way to rest easy when it could very well happen again. The best I could get out of my Chevy rep was free oil changes for a year. Good luck, and spread the word!
  • au83au83 Posts: 1
    My 2007 Tahoe 4X4 LT is now at the local Chevy dealer due to what seemed to be slippage of the transmission twice in a 1 mile distance prior to it losing all acceleration. It would move in reverse and in 2nd, but nothing else. I have just over 34k miles. So far the only information, after two days and me finally calling them, is that they have ordered a part and are having to get into the transmission, but the person I need to speak with for more information is not available. The tow truck driver said he had hauled 3 Tahoes in over the past two days with the same type of problem. I left GM products several years ago after similar problems and only returned on this vehicle. Now I am questioning my decision.
  • daddysondaddyson Posts: 1
    Mine went bang and lost all acceleration at about 30 or 35 mph entering a freeway access road. While waiting on the side of the road for a tow, I found I still had reverse, first, and second. Decided to move to a safer place but ended driving it home 10 miles in second gear. Figured I could drive it a half mile to the Chevy dealer in the morning. Pulled in the driveway to put it in the garage. No reverse! Had nothing in P and R. Forward in all other shifter positions. No neutral with engine running. Found that with engine off there was neutral so I pushed it out of the driveway, started it up and parked it on the street. Got in the car in the morning to go to the dealer. Nothing! Key in ignition turned on power to dash but no engine response at all to turning the key. So, I called for a tow. Chevy dealer got it. Called later in the day and they couldn't find what to fix because it was working. Hah! They called later and said when the mechanic put it in reverse to drive it off the lift, it went forward! Three days gone and still not fixed. Mileage: 16,750.
  • tah04tah04 Posts: 8
    WHAT IS WITH THESE TRANNY PROBLEMS. MY 2004 TAHOE 21K TRANNY REPLACED, 37K THAT TRANNY REPLACED JUST GOT THE THING BACK 90 MILES TRANNY SLIPS CHECK ENGINE LIGHT ON. THERE NEEDS TO BE A RECALL ON THIS TRANNY. ARE WE LOOKING AT A EARLY 80'S 700R4 PROBLEM. THIS IS A 46K DOLLAR CAR. IS THERE ANYONE WHO HAS SOME PHONE NUMBERS FOR THE CEO OF GM. IF YOU DO FOWARD THEM TO ME BEEING I CAN'T DRIVE MY 46K DOLLAR CAR I HAVE THE TIME TO MAKE PHONE CALLS. ALSO WHO IS "SERTA" CJ :lemon:
  • I own 2 2007 Suburbans my tranny went on the 1st. @ 35k . Dealer went in and fixed some things inside of it.
    No sooner than I get it out the dealer my other starts to slip @ 20k. This is the worst I have lost all confidence in these vehicles. This time the whole tranny will be replaced on the week of 4th of July!!!
  • 07max07max Posts: 2
    I have a 07 1500 Silverado (NBS; LTZ; 13,000 miles; 6.0L) w/similar problems to those listed here. Mine tranny seems to be slipping or very slow shifting (OD down to third) when driving up a steep slope (5% or greater) or on a very long slight incline (similar to trailer haunching) as well as noticeable loss in power on the bottom end with a very noticalbe power range increases during hard exceleration. I have now had it at the dealership 7 times. The dealership has updated the AFM as well as other unspecified computer updates but with no improvement at all. They are going to be adding a computer monitor from GM to the truck next week and will be sending the monitor to GM for evaluation but they are telling me this may be a 6 to 8 month process if it is found to be a program error since they will have to have EPA approval for any changes.

    Has anyone else had a computer monitor installed that is sent to GM?

    Has anyone talked to their dealers about lemon laws for their problems and if so what has been said
  • Only thing I heard about lemon law is the same problem have to occur 4x in order for U to have a case
  • rockman59rockman59 Posts: 250
    07Max said: Has anyone talked to their dealers about lemon laws for their problems and if so what has been said
    ____________________________________________________________
    The lemon laws are pretty much a state issue and each state has different interpretations on what constitutes a "lemon" regarding vehicles and different guidlines on what you need to do to certify that you have a "lemon". Check out your state laws and see what they say.
  • 07max07max Posts: 2
    Thanks for the input on the lemon laws. I have checked for my state (TN) and think I that may be able to proceed, but would rather have the truck fixed or replaced on good terms if possible. Will keep you informed on my progress.
  • c3gmc3gm Posts: 3
    We have a 2007 Chevrolet Avalance 1500 LTZ.

    The Transmission, under acceleration from a stop-light, made a POP sound, then revved up to redline. The transmission only had Park, Reverse, and 1st gear. When revved up in first the transmission would whine. This vehicle had only been put into 4 wheel drive once to make sure it worked, when it was new. This vehicle's mileage is mostly highway, very few city miles. The vehicle has a total of 27,673 miles on it.

    This problem resembles the same issue from the 1992-1996 model years where the Spline Drive (input shaft) pin, also reffered to as the SUNGEAR would snap. Under acceleration, approximately every 30,000 miles, the pin would snap causing the input shaft to slam into the forward gears of the transfer case. This could destroy the transmission, transmission housing, transfer-case and/or transfer case housing depending on how severe the load is under acceleration during the failure.

    GM knows this part breaks easilyunder load or heavy acceleration (merging, passing, emergency acceleration) and has for nearly 20 years (1998). Why does it appear again in 2007?

    C3 :mad: :mad: :mad:
  • WAKE UP!!! People are wondering why their Chevy's have issues like the GM lemons of old. If you did research before buying your lemon GM vehicle, you would find out that massive changes haven't been made to the GM architecture in just about 10-15 years. Not to mention, the new Tahoe, Suburban, and Avalanche are being built cheaper than ever before. There's gotta be something behind how GM can now make almost 10 grand more on the new Tahoe than the old one, yet the new one has all of these "revolutionary" changes. The only change I see is just what GM does - replaces the body parts, stiffens the frame every now and then, and keeps the old 30+ year technology under the hood. Wake up - buy a Ford - you'll be much, much happier.
  • c3gmc3gm Posts: 3
    Update:

    2007 Avalanche-

    1) Replaced Sprag Gear
    2) Replaced clutch packs
    3) Re-flashed PROM for DVD Navigation system
    4) Re-flahsed PROM for Console

    This cured the problems of the DVD navigation system failing with the A/C Controls and Radio rendered inoperable.

    So far, 1400 miles and the transmission is still holding together. No one has raced off of a redlight under full-throttle acceleration, nor have they attempted to repeatedly stand in the throttle in order to accelerate rapidly. My guess is, the next time it happens, it will break again.

    In response to the Ford Comment. our 1999 Tahoe worked flawlessly for 167,000 miles- and I do mean FLAWLESSLY.
    The difference was, that 1999 Tahoe had driveline slop which caused clunking and clattering and sounded as though something was wrong, when in fact, there was nothing wrong.

    I don't hear of these problems in the Pickup, why is it only happening in the SUVs? :confuse:

    C3
  • YOU ARE SO RIGHT! I read these messages and the transmission problems are the same as the 1997 Tahoe. I was a diehard GM owner, never would buy anything else, until all the problems with my $34,000 1997 Tahoe which left me on the side of many roads. In 2002 purchased a Ford F-250, best truck I've ever had (and still have). I use the Tahoe for short trips to the store, but no long trips from home. I finally did wake up!
  • hello im another who will stand with you on that one a 2000 yukon xl slt 4x4 with auto ride an my trans went out at 20,000 miles they rebuilt it it went out again at around 40,000 miles then 6 times more at a transmission shop then i went to the dealer an put in a serta it lasted for 20,000 miles then it went out then they put in another serta trans an it went out before i could go down the street 3 block,s im outa pocket on at least 12,000 dollars an get this its still at the dealers now with all the excuses in the world an its my faught so thanks for sharing your storie i,ve been asking them for a few years now i payed 55,000 for the suv been in the shop at least 6 months since ive had this problem an they dont wana put another trans in an its still under warranty 20,000 miles on it an they diagnostic the truck many times to where the servic guy is lying an making up stories ooh it the map sensor wrong ooh its the 22,s rims wrong so theyre decline my warranty on it as of now i was told from the dealer how does a trans straight from the box go out in two blocks an my check engine lite wasnt comming on on these lste attemps but before on trans number 6 or so it was comming on like it should if the trans were having a problem but now they knew that the trans was out from a test drive with my self an the trans was slipping badly 2nd gear an the check engine lite wasnt on they knew they should have checked out why diagnostics of coarse but did they no they supposley put in a new one but it lasted not even one mile now thats a little about my storie they want me to pay again for another trans 4,500 because they cant diagnostics rite or just maybe your rite theyres somthin wrong rite out the box with this trans desighn or it,s really to small of a trans for a 7000pd suv it also in the z28 camaro 3,500 pds same trans dont make an sences but i beleive they are hidding the problem so let me know who you contacted please its just the run around game at the service center they say things that they will do but have no authority to have work done yes im in need of a ceo also numbers who you have called it caused a great hardship on my shoulders really especialy when the service guy has to lie to you but im with you on this one vincent 1760 718 3015 call me if you would like to combined up on this one they really need a recall ive been asking an all they say is no an that noone eles of coarse is having this problem out of a yukon xl with only 77 thousand miles on it 11 trans replacements whata shame the way gmc or chevrolet is treating us what good is it to have it fixed an go a few blocks an it broke again its a hardship vince
  • i have my problem for 70,000 miles get rid of it while you can 11 trans an my outa pocket is ab out 12,000 dollars an they are not going to do anything about this problem but give you a headache or a new scratch or ding while its in the shopp mines is a 2000,yukon xl 4x4 had new trans is out right now after i baought a new serta 20,000 later it went out then they replaced it they said went down the street an two blocks later it went out the first day so i say that im in love with the truck its been in the shop over the years about 6 months for trans problems an all they would say i its old but i,ve been trying all this time to trust the suv never know when the trannys going to blow even out of the crate for 4,500 bucks an you know what they put the same trans in the newer suvs whata dog they are knowing the complaints they get on these expensive trucks an they want me to buy a new one im glad i found this site to learn that that trans is in the new ones too thats not good they havent shared the expense with me just alot of talk from service i thought i was buying the best suv in the world an baoght somthing that doesnt work long an they wont stand behind theyre product but if i were you buy a ford or nssan suv i cant say that theyre going to treat you like me but i like my truck an im outa 12,000 for trans an its out again while its under a serta trans warranty an that were once outa the box serta it went out in 20,000 an then another one serta warranty the it lasted two blocks an slipped i said noway couldnt be that in two blocks but it was now theyre making up so manny excuses about the blame took my money an dont want to warranty this trans from gmc seta a third time warranty were 50,000 miles 5 years get this only two years slipping hear an their 20,000 miles on this serta trans from gmc an they wont warranty anymore which going to cost me another 4,500 for a new trans thats not right thats all i ever baught were gmc corp for years an they wont take care of the custumers my problem started at 20,000 mile first rebuilt trans free after that twent thousand later out of warranty i had to start paying then an twenty thousand later again so while its still young trade in that goose for a swand
  • IF YOU CAN CHANGE THE FILTER IN YOUR TRANNY YOU CAN TO THE "REBUILD" YOU JUST GOT CHARGED A GRAND FOR YOUR SELF! I HAD THIS SAME PROBLEM IT DROVE FINE UNTILL STOP AND THEN FELT LIKE GETTIN HIT IN REAR FROM 1ST TO 2ND, TURNS OUT WHEN I CHANGED MY FILTER ALL OF THE SOLENOIDS THAT ARE CAUSING THIS PROBLEM ARE RIGHT THERE! NO NEED TO REMOVE TRANNY! AND KITS ARE AVAILABLE FOR ABOUT 125.00! SERIOUSLY IF A 30 FEMALE FROM SC CAN DO THIS YALL CAN TOO! IT TOOK DAYS OF RESEARCH AND ALOT OF WILL POWER BUT I FOUND THE PROBLEM AND ITS NOT EVEN A HARD JOB, A LIL MESSY BUT HEY SAVES YA ABOUT 1500.00 AT THE SHOP!
    ;)
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