Last post on Dec 11, 2013 at 9:32 AM
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Chevrolet Impala, Transmission, Sedan
#191 of 479 07' Impala Transmission Slip (pressure solenoid)
Mar 09, 2010 (11:03 am)
Iv'e read several posts on this issue w/the 2007 Impala 3LT (3.9L) and wanted to add my .02 cents We bought the Impala which was a lease my wife had for 3yrs. 40,000miles and no issues at the time we bought it. We chose NOT to by the extended warrantly as it was insanely expensive and was only 12months. Ironically enough the transmission started slipping 1 month after purchase. Usually from a dead stop the engine would wind up after pushing accelerator then it would lurch violently into 1st gear shaking the entire car. It didn't matter if the engine was cold or warm. If I was at a stop up hill and started to accelerate it would slip every time. I would also make sure I wasn't ever reversing and sliding the lever into drive without fully stopping first. The problem persisted for 2 months then I brought it into Chevy and they could not duplicate it on the 1st test drive so I told them I would drive the car and let 2 mechanics ride along...unbelievably I could not get the car to do it either! They of course were unwilling to do anything for me until they themselves observed the tranny slip. SO a couple weeks later I went on a 6 day business trip and left it w/them all 6 days. On the 3rd test drive they found the slip. During inspection they found it was the "transmission pressure control solenoid" sticking. They ended up replacing the complete second clutch assembly per bulletin #06-07-30-023C (a $1200 repair at their cost!) The car was within the 5yr/100,000mi manufacturer warranty. If any of you experience this slipping issue, write down this bulletin # and give it to the mechanic to check out, it may make your process much quicker for diagnosis and repair. When I initially told Chevy about this problem they seemed perplexed/shocked. I told them I have been to online forums and found hundreds of people with this very same problem. They insisted on the fact that the 07 Impala has no such chronic issues that they knew of. This was a load of crap in my opinion and a dealer ploy to simply offstay having to make a $1200 repair. The very fact that Chevy has mad a "Service Bulletin" for this issue signifies the fact that the problem is on a rather large scale and needed to be noticed and disseminated to all dealers. Other than that I simply love this car. It's got every ammenity I could ask for and a lot of power and acceration. I average only 19mpg as I drive mostly city. Anyone looking to by a 2005-2008 Impala simply beware of this costly fix and make sure you buy the car within the 5yr/100,000mi warranty or consider selling it right when the warranty expires. Hope this helps and may save you $1200.
#192 of 479 Re: 2003 Impala LS performance problem [sdaniel]
by MrShift@Edmunds HOST
Mar 09, 2010 (8:48 pm)
catalytic converter clogging up?
Apr 18, 2010 (9:07 am)
i have top of the 2004 impala indy ss.transmission fluid and filter change 6mnths ago at 62000 miles now have 67k.tranny is slipping sometimes any easy fixes
#194 of 479 Re: 2004 LS Vibration [02impalals]
Apr 27, 2010 (12:21 pm)
this problem could be your tie rod ends but I'm beleiving from experiance that your hubs are worn
#195 of 479 Re: 2002 LS Impala Transmission(?) Problem [hybr1d]
Apr 27, 2010 (12:29 pm)
sounds like you have a stretched out first gear belt I would go ahead and find a replacement trasmission or have yours rebuilt
#196 of 479 Re: possible transmission problem [impalachris]
Apr 27, 2010 (12:48 pm)
sound like when you had it flushed trash was lodged in the valve or lines replacesing these should fix the problem
#197 of 479 Shifter problem?!?!00 impala
Jun 24, 2010 (10:35 am)
I recently went on a trip about 600 miles and when we were almost there we went to fill up on gas and realized the key wouldn't go to the off position and keys wouldn't come out of the ignition. We drove the rest of the way and when we finally stopped the keys came out but only in the on position! So now my cars dash board stays on along with the radio/clock until the battery dies!!! We have been unplugging the battery when were not using it but we need to fix the problem but dont even know what it could be! Also the shifter will move freely through the gears without pushing the button in ( which it never used to do) Not sure if its the ignition or something to do with the gear shifter... PLEASE anyone have ne comments or suggestions let me hear em anything will help! Thank you!
#198 of 479 Re: 07' Impala Transmission Slip (pressure solenoid) [esdrvr]
Jul 01, 2010 (1:49 pm)
Unplug all the little and large electrical connectors and clean them with the electronics contact spray cleaner and put the connectors back and see what happens. My Impala had intermitent transmission jerking problems and now it is gone.
Those little and large connectors tends to be corroded and can cause contact problems. The electronically controlled car of these days can malfunction if one tiny electrical connection is bad. You can save thousands of dollars with a few bucks.
Share the success stories with others.
#199 of 479 Transmission problem with 2004 Chevy Impala LS
Jul 05, 2010 (10:05 am)
I have a 2004 Chevy Impala LS with 109,800 miles. I bought the car in 2005 with 32000 miles. I have never had any problems with the vehicle until about 6 months ago. I took the vehicle in for an oil change and they suggested I have the automatic transmission flushed with this machine because the fluid was dirty. Ever since the flush the transmission has started slipping. When I first get in the vehicle it runs great for about 15 or 20 minutes. As it gets hotter the the transmission will jump in and out of gear while at high speed. If I come to a stop the transmission seems to clunk as is trys to downshift. The other day I was sitting at a light and the car lurched and died as though I popped the clutch without giving the vehicle any gas. Another thing if I drive the car 10 or 15 minutes, shut it down, and then try and restart it it will jump and die. When I finally get it running the transmission will jump in and out gear as though the computer doesn't know what gear to put it in. Any ideas from anyone would be greatly appreciated
#200 of 479 Re: Transmission problem with 2004 Chevy Impala LS [jthais]
by MrShift@Edmunds HOST
Jul 05, 2010 (10:19 am)
Well your decision to power flush a high mileage transmission was regrettable. This is not a good thing to do in most cases.
You might scan the car's computer for transmission trouble codes and go from there. It's impossible to diagnose a modern electronic transmission from this distance.