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my 08 impala with the 3.9 L is a fantastic car, but at about 100k, transmission started slamming during shifts. GM dealer could not find problem and no codes showing. I took it to a shop that has contracts with several police depts. for transmissions. I described the problem, he said valve body. $2100 repair and worked fine. Now at 124k, transmission seems like it is slipping, and at low speeds with very little throttle, I can feel shudder. Would be nice if GM had good transmissions. I have had almost all GMs since 1960's and almost all have had transmission problems at under 100k, but engines have lasted into high 300k miles. but the few Fords I had had good transmissions but the engines did not last (last owned a Ford in 1995). This year bought my wife a Nissan Versa Sedan with CVT, transmission code at 52k, replace whole transmission under warranty with no questions, problems or hassles. Maybe I need to start looking at other than GMs.
Besides the Transmission problems, both front hubs have been replaced, the left one twice for bearings and the right for bad ABS/Traction Wheel Sensor and the Rack & Pinion has been replaced. I have done most of my repairs on past cars/trucks myself and every vehicle I have had has made it well past 300k on the engines, but the rest of the quality on this Impala is going down hill.
I just happen across this post while trying to troubleshoot why my computer control system(tells me about my oil life, tire pressure, etc.) is not working. I have a 2004 Impala and I about fell out of my chair reading some of these posts. This sounds just like the stories that I have been telling my mechanic for months. He tells me he can't figure it out w/o codes, so the next time my car died while I was going 65 mph, I had AutoZone print the codes read before the check engine light went off. Still no luck fixing it though. The trans(was replaced w/ a rebuild) problem jerking when I take off, car not starting and then just mysteriously starting, electrical system malfunctioning. When I first noticed a problem the car's RPMs would fluctuate and sometimes the gas would control itself. My mechanic replaced the throttle body and MAF sensor and it seemed to work perfectly. However it did not fix the other issues. The check engine light still comes on and will go off after I shut off the car and sometimes a couple of days later.
I am very disappointed hearing that so many people are having the same problem with their Impala. In the past I had faith in General Motors.
I will be contacting them and will repost.
My 2007 Impala has just hit 102,000 miles, and the transmission is displaying the same behaviors many of you have posted here, with the lurching and clunking from 1-2, and the neutral type clutching/loss of power from there on up. This car has had every standard maintenance and oil changes performed at dealerships, and is mostly highway miles, so I certainly expected more out of her before having these types of issues. From those of you who have found a resolution, was it the clutch? or Solenoid? and where did you take your vehicle to have your issue resolved? Just hoping to get some insight before I get screwed on repair bills
STAY AWAY FROM GM! my 2006 impala with only 79k i bought new and have kept up all maintenance on and was lady driven has a bad transmission and i contacted gm customer service directly and told them that a transmission with less than 80k should fail especially since i have done all required maintenance considering im now out of warranty. i was then told that in order for gm to "help" me i would have to take the car into the dealer and have the problem diagnosed. at first i was told the diagnostic fee was $139....after going back and forth with gm customer service i got them to waive the fee. so i limp the car over to the dealer only to be told that the diagnostic scanner showed 3rd gear having a problem but in order to be able to tell me EXACTLY what the problem is, they want to charge $860 just to tell me what needs to be replaced. so if i was paying for this they would expect $139+$860 which equals $1000 JUST TO TELL ME WHAT NEEDS TO BE FIXED! I CONTACTED THESE CUSTOMER SERVICE SCHMUCKS ON HERE THAT SAY "SEND ME AN EMAIL WE'LL TRY TO HELP YOU" AND GM SAYS THEY'RE WILLING TO PAY FOR ONE HOUR OF LABOR AS A COURTESY! GEE WHIZ HOW NICE OF THEM! I PAID $23K FOR A BASE IMPALA (RIP OFF BUT I NEEDED A CAR SO DEALER SHAFTED ME) that has taken a dump at under 80k miles! CHEVY SUX AND SO DOES GM! ill be spreading this along BTW
I am currently having problems with my 2004 impala transmission. It slips two to three times every time I'm driving up a hill. I've been having this problem for a while now, especially since I moved to Atlanta. I know I have about a good year or so before it goes out completely. I was thinking about getting a used transmission put in my vehicle, until I called around and realize the part and labor for this transaction was too expensive. Especially since my vehicle is ten years old. However, my vehicle only has 80,000 miles on it. I was thinking about maybe getting the old fluids flush and replacing them with new fluids. This transaction will only run me a few hundred bucks at the most which is much cheaper than getting a new, rebuilt, or used transmission. Would anyone mine sharing with me there past experience of getting there fluids flush? Did it help or at least minimize the transmission slips when driving your vehicle?
By "slips" do you mean the car stops moving and the engine races away, or are you suggesting more of a hesitation and jerkiness?
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just to let you know what i found . i lowered the tranny down and pulled the side cover off that faces the left front wheel and i replaced the presure control solenoid . and while i was in there i replaced the torque convertor bandwith solenoid just because these go bad often also but the problem was the pc solenoid , it now works great and i have no problems
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Same problem, '07 SS. Slips then grabs.Started about 2 months ago around 72K. My local dealership claims to know nothing about Impala Transmission problems. Told me to just watch to see if gets any worse. The worst thing is not knowing. Sounds like the actual problem is uncertain. Do I just drop 4K for a new trans? Drove beaters most of my life and finally bought a car I thought would give me ten years of reliable service so I could do a little traveling. Now I hate to go more than 50 miles from home because I don't know when it might fail.
Wow! I thought it was just my 05 Impla! I purchased the car with 40k miles on it in 07. The car's transmission seemed to slip between 1st & 2nd gears about a year ago. This mainly occurred while at a stop light. I had the transmission flushed and the filter replaced and now with 160k miles it slips or shifts really hard in all gears. This is the 1st car I've had that does this. I was told that I could have the transmission rebuilt but it will occur over and over again, that GM has had "issues" with this model's transmission. I really enjoy the car over all, but the I'm afaid to go any real distance with it fearing the transmission will just fall out of the car! My wife just purchased a new car 3 weeks ago and she really wanted to get an Impla but with the issues we've had, we purchased a VW. I still use the Impla as my daily driver, but wonder how much longer the transmission will last. And an very odd thing happened this morning when I went to leave this morning for work, my car wouldn't start. Light came on just fine, was in park, steering wheel was locked, but the car wouldn't turn over. Thinking it was the battery I had planned on jumping it when I got home. So when I got home today I tried it again and got the same results. I had to push the car about 25' so I could get it to where I could jump it. I tried to start it one last time and the car turned over just fine....odd. I took the car in to get the battery tested at a local auto parts store and the battery tested just fine! I'm totally stumped! And so was the guy at the auto parts store who's been working on cars for 30 years. Not too sure that I'm going to purchase another GM. This was the first GM I've purchased. Sad.
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