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Buick LaCrosse Transmission Problems

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Comments

  • e_net_ridere_net_rider Posts: 1,380
    We are talking about a Super. From my recollection, the Super has the NorthStar Aurora engine V-8 coupled with a 4 speed box. It might be the same tranny used in Impala SS, but definitely in a few Cadillacs.
    I see the fix, replacing the valve body. Again from recollection, the valve body is in the bottom of the tranny so I would consider that a good fortune that they did not have to drop the tranny for the repair. My personal observance is the more they have to take apart the greater the chance of something going wrong resulting in later problems. A bit like Murphy's law.
    Valve body, plate, and valve. The valve I mentioned in earlier post as being a known problem, that would be this valve. Certainly easier than dropping whole tranny to get at, but it requires removing the valve body to get at it.
    I hope that is the end of your trouble. At least from what I've heard, they finally got a rear engine seal that holds on that engine. Third change seems to have worked and that is a blessing. No easy job to change on the Aurora engine. The engine is of a special design and to replace it, you not only had to remove transmission from it but split the block at the crankshaft holes.
    Do make sure that proper oil fill is done at changes. Because of that rear seal blowing out, GM reduced the amount of oil by 1/2 qt to an even 7 qts. They did not change the dipstick, so when at proper level the stick always showed a 1/2 qt low making it easy for some to inadvertantly overfill.
    I am unaware of late changes if they occurred so you might have a bit of digging to find facts. That is they may have changed the fill quantity after they found a seal that holds, or not. They may have eventually changed the dipstick to reflect accurately, or not.
    My opinion of that engine, pretty high tech for its release. Also powerful for then and very smooth. Downsides seem to be that it can be finicky as many Aurora owners found. Many who used aftermarket parts developed further problems and the fix most often was to replace with OE parts. Earlier years of it required premium and to short change that often led to spark knock. The sensor system was likely not as accurate as today's system. Spark knock, very bad for engine. Also it usually led to decreased mileage which offset the price difference and it definitely hurt performance.
    I was saddened slightly by Cadillac's decision to drop the engine instead of updating it for the next generation. That would be moving it from the 32 valve to VVT and changing it to DI (direct injection). At least it would have been a very interesting comparison to the Corvette Mercury Marine V-8.
    Does yours have an oil cooler?
  • Actually no. The Supers have the small block LS4 that are also used in the Gran Prix GXP and Impala/Monte Carlo SS. The Lucerne Super however did come with the Northstar. I'll continue to know on my simulated wood on my dash that the problem is solved.
  • moonclmmoonclm Posts: 1
    I feel your pain. I own a 2005 Buick LaCrosse and it is now in the transmission shop for a repair on the transmission. I had it in 2008 at the dealership with the problem, they could not diagnose the problem. In fact, I had it at TWO GM dealerships and neither could find the problem. I was told by the trans shop they will not find a transmission problem because they don't do transmissions. I will never purchase another GM product. I have been buying Ford products, due to buying on the A, Z plans. I had a 1993 Mercury Sable that performed a heck of a lot better than this Buick. I have never had a vehicle where I had to have the transmission repaired. I have a cousin who bought a brand new Nissan Sentra in 2010, right after the purchase, the transmission went out. So advice to everyone, go online and get reviews before purchasing a new automobile!
  • deanatldeanatl Posts: 2
    I have a 2006 Buick Lacrosse and am get enginer light with codes 716 and 717 input senser. I have checked the wiring and connectors and it is looking like maybe need to change the input senser out. Dealer is telling me that for $600.00 is what it will cost to drop the engine out to get access to the cover to change the senser. The milage is only 40,000; does anyone have any ideas?
  • gmcustsvcgmcustsvc Posts: 4,001
    deanatl,
    Thank you for taking the time to post your concerns. Can you please email me with your VIN, current mileage, and involved dealer? I look forward to hearing from you. I apologize for your inconvenience and frustrations. I look forward to working with you.
    Christina
    GM Customer Service
    SocialMedia@GM.com
  • jondoe213jondoe213 Posts: 1
    I have a 2005 Buick Lacrosse CXL with 111,000 miles on it. Like a previous poster I too bought the Brand to avoid disasters like this. Was driving on the freeway felt a (shudder) when stepping on the gas i thought i was going over rumble strips but the car wanted to stall. Managed to get it home luckily i live right behind a dealership so planned on driving it over put it in D and no go. Had to have them come pick it up which was 21/2 hours later! Thats a seperate issue but i live right behind the dealership so i'm sure i'm charged for this!! Get the call and they are saying it's $3500 to replace the transmission. NO WARNING. no lights..nothing..just dead. Emailed Buick on this I find this insane. After 150,000 sure why not but come on i expected better from this brand. I almost vomited on my screen when he told me the cost.
  • does not bode well for my '05 LaCrosse !! I will never buy another one and probably will steer clear of GM period. Your transmission repair: probably get a better deal if you take it to a dedicated/trusted transmission-repair-only shop. The dealership may just drop it and take it to a contract repair shop. Thus you get charged the dealership's middle-man fee on top of normal repair charges.
  • motorcity6motorcity6 Posts: 427
    Good idea..Most GM don't get involved in the rebuilding of trannies for they can outsource the work and save money..Pocket the profit.

    The plain old 3.8 V-6 is a corporate engine with the same engine and tranny shared with the Low-end Buicks as goes in the base Chevy Impala and base Grand Prix..

    The longer an engine/tranny stays in production, the push by the bean-counters is to cheapen the product---save money to improve the bottom line..Back in the old days the warranty period was short, however with the Govt takeover of GM the warranty period was extended.

    I ran across a 2008 Lacrosse CXL, all options w/12k miles and only 1 yr of warranty left, probability could be bought for 13.5 cash, however after reading the Buick forums, I passed up the bidding process..
  • newbuickownernewbuickowner Posts: 1
    edited November 2012
    We bought a 2005 Buick LaCrosse from a man whose father bought it brand new when he was 83 years old. The father is now in assisted living and the son put the car up for sale. The car is immaculate and had only 42,000 miles on it. So my husband scoffed it up because his 2000 Chevy Impala with 320,000 miles on it was finally having too many issues. During the first long drive, he noticed a skip as he goes to accelerate. It's happened several times and as disheartened as he was he went to a Buick dealer. They put it on the computer and came up with 1811 code. They gave him an appointment for today to "look into it further". He went this morning and for $100 (I think they just put it on a computer again!) they said it's the Pressure Control Solenoid that it would take 5 1/2 hours and approx $900 to replace. I started doing research 2 weeks ago and found alot about the 2005's having this issue. I am worried that we are going to start into a long haul. Isn't there a recall or bulletin on this? I DID call the GM number 2 weeks ago when I found it on this website and spoke to someone there so it's on record that we have the skipping issue and that we had an appointment today. I think we need direction before we dump alot of money and pain and anguish. The thing that gets us is the mileage is so low. If we had bought the car new and had this same issue at this same mileage, the car would have still been under warranty because we drive more miles that the elderly man did. Because he didn't drive far, it took longer to get to this point. Thank you for any assistance.
  • jq2005jq2005 Posts: 1
    I have a 2005 lacrosse and I am having the same exact problems you are having buick 55 my wife and baby and 10yr old drive in that car, and just this morning we were turning shut off in a turn and going form a dead stop a woman can control it a man can barely control it! I have been in the car business for a while so I know diff people I've had it scanned multiple times, there are six different codes coming up for fuel, but the same exact things that happen to you happen on a regular basis with this car and NO RECALLS it's So dangerous She has broken down on 95 with my infant in the car at night! and has to wait ten to 15 minutes before she can get it started and have to two-foot it just in case especially in stop n go traffic! but no one seems to be able to find the problem, but somethings gotta give at least put out a bulletin telling consumers what might be the cause of the problem.it is absoloutely horrible the way it performs and the check engine light is on n when its off it doesn't happen nearly as much if ever so it might be good for a day or 2 at the most n it scares the life out of me for anyone to be driving it and LIKE TODAY STALL OUT IN THE MIDDLE OF THE TURN AND NOT BEING ABLE TO MUSCLE THE STEERING WHEEL TO CONTROL IT! but I'M IN FOR ANY PETITION AND SUPPORT I CAN!
  • gmcustsvcgmcustsvc Posts: 4,001
    jq2005,

    Have you gotten this checked out at a dealership? If so, and they weren't able to diagnose the cause of this concern, please let us know! We can be reached at socialmedia@gm.com (include your name and contact information, the last 8 digits of your VIN and mileage, and a summary of the situation so far).

    Sarah, GM Customer Service
  • tenbassttenbasst Posts: 1
    Has anyone seen this problem?
    I have a low mileage 2006 LaCrosse CSX. The transmission coolant chamber in the radiator burst causing transmission fluid to contaminate the engine coolant system and antifreeze contaminating the transmission system. It is the shop right now; looks like a $5,000 job!
    No warning until the engine started to overheat and finally the indicator light made me stop driving.
    Thanks,
    Tom
  • It looks like we are experiencing the same problem several others have encountered.
    We love our Lacrosse. It rides beautifully and runs great.
    Yesterday, without warning, the car suddenly would not move forward in drive. It does move in every other gear.
    We took it to the dealership and was just told tonight that they think a strap broke and now needs either a complete rebuild or a new transmission. The cost is $3600.
    How does a car that moves need a new transmission? And how does a car with less than 100,000 miles just suddenly have a strap break? The dealership said it was a "wear item".
    Is gm doing anything about these transmission problems?
  • The transmission on my 2008 LaCrosse stopped working three days after the dealer had replaced the transmission fluid as a 50,000 mile maintenance routine. The mechanic said the problem had nothing to do with the fluid. Is it possible for a mechanic to miss an obvious problem with
    transmission when adding fluids?
  • After a year and a half, I trust the problem with your transmission has been solved. I just want to share my similar problem. I bought my 2008 LaCrosse new. I have always gone to the dealership for maintenance service. Two weeks ago, when I scheduled an oil change, I was told that 50000 miles was time for transmission fluid. Three days later, my car stopped moving and needed either a new transmission system or a rebuilt one. The mechanic told me that the breakdown had absolutely nothing to do with the fluid replacement. I am having GM check into this statement. I would think the purpose of refreshing transmission fluid is to keep the transmission in working order.
  • After a year and a half, I trust the problem with your transmission has been solved. I just want to share my similar problem. I bought my 2008 LaCrosse new. I have always gone to the dealership for maintenance service. Two weeks ago, when I scheduled an oil change, I was told that 50000 miles was time for transmission fluid. Three days later, my car stopped moving and needed either a new transmission system or a rebuilt one. The mechanic told me that the breakdown had absolutely nothing to do with the fluid replacement. I am having GM check into this statement. I would think the purpose of refreshing transmission fluid is to keep the transmission in working order. since your original posting indicates at least one 2008 LaCrosse had a similar issue, I am thinking there is some defect in that model.
  • It appears that your problems are (or were) very similar to the problems with my 2008 LaCrosse. My problem just occurred in the past couple of weeks and I too was told a strap had broken. The cost was in the same range as yours. To compound the problem, mine happened thee days after I had the transmission fluid replaced as the dealer had recommended doing at 50000 miles and did it at the time of a routine oil change. They insist the breakdown had nothing to do with the fluid. Although the car runs fine now, I contacted GM as I really want to know how this can happen so soon after preventive measures. Though they made a partial price adjustment as a loyal customer whose warranty has expired. I would have preferred answers and assurance that my new transmission is safe.
  • 2005 Lacrosse CXL...Got on the freeway and the car would not shift out of gear at 35mpg. Just stayed locked at that speed. Got off the freeway and sputtered into a parking lot. Car was leaking trans fluid and would not move when put in "R" and "D". Had the trans service at the dealer right before 100,000. Got to 109,000 and then this happens. Never had problems with a trans. before, especially a Buick, which I bought because of supposed reliability. Thought those days were behind GM, guess not. Waiting to see what shop says.
  • Turned out to be a blown trans line. $450. Feeling lucky. Always enjoyed this car.
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