Last post on Jun 13, 2013 at 1:35 PM
You are in the Pontiac Grand Prix
What is this discussion about?
Pontiac Grand Prix, Transmission, Sedan
Go to NHTSA to file a safety complaint.
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#340 of 492 Re: 2005 - 2007 Grand Prix GXP transmission Failures [ezurawek]
Nov 13, 2011 (12:51 pm)
I have contacted Pontiac several times and they don't care about this problem that is happenning to many grand prix owners. I am so sorry that this is happeing to you. I wish they would take care of this. I have to take my car in to get the transmission replace too,. and they told me is going to cost me 2,800. I hope we can all get together and do something about this...is just not right!
#341 of 492 Re: 2005 - 2007 Grand Prix GXP transmission Failures [ezurawek]
Nov 16, 2011 (6:13 am)
Thank you for your post. We can look into the situation further (see if any recalls are associated to your nephew's vehicle specifically/help you work with a dealership towards resolving this concern). Please email us with your name/user name, contact information, the last 8 of your VIN, and your involved dealership.
GM Customer Service
#342 of 492 Re: 2005 - 2007 Grand Prix GXP transmission Failures [gmcustsvcsarah]
Nov 17, 2011 (7:40 am)
Hi! I have a 2005 Grand Prix with the same transmission problem: slipping, long shift, the computer codes are a dictionary of transmission problems. Sarah, I will send you my information. Needless to say, I need a new transmission. I'm shopping for another car now. I'm 48 and since I was 16 I've owned GM vehicles. Unfortunately, it's become too much for me to continue to deal with these kinds of reliability problems.
The other day a guy in a 2005 Grand Prix pulled up next to me at a red light and asked how I liked my Grand Prix. I said it has a transmission problem and needs to be replaced. He replied "me too!".
#343 of 492 Re: grand prix 2008 [kate43]
Nov 20, 2011 (9:45 am)
I had the same issue. I ended up having the electrical hub replaced. Its the fuse box located under the hood to the left. Mine would get moisture in it from heat or humidity and the contacts were rusty and made my cars electrical systems respond with varying DBs. Had it replaced (GM part) for about $400....no problems since.
#344 of 492 GP GXP Downshifting Problems
Nov 21, 2011 (12:29 pm)
I'm on my third Grand Prix. For others with hard downshifting problems on OLDER 2000-2002 models, I found a bottle of Lucas Transmission Treatment worked pretty well.
UNTIL THIS TIME.
I own a 2008 GP GXP, and when I come to a stop sign and stop, then restart, the transmission is slow to go back into first gear. It hangs momentarily in neutral before slamming into low upon accelleration. Not real good for the transmission, and clearly leads to bigger problems. I would like to knnow specifically what controls these downshifts, and how to go about fixing it?
Also, I wish I had a dollar for all of you complaining about GM transmissions.
Safety organizations forcing recalls obviously think there is no danger in having your transmission malfunction in the middle of an intersection! Come on, GM! Where is your recall???!!!
#345 of 492 Re: 2005 - 2007 Grand Prix GXP transmission Failures [gmcustsvcsarah]
Dec 01, 2011 (11:13 am)
Surprise Surprise Another Grand Prix 2005 transmission problem ! I had mine in within 2 years and now with 79000 it's doing it every time the engine shifts as you go faster. GM should look into this problem !! Maybe this is why there are more foreign cars in America --- I have called dealership and will advise what is said..
#346 of 492 Re: 2005 - 2007 Grand Prix GXP transmission Failures [jziemer]
Dec 01, 2011 (12:15 pm)
Looking forward to the update, jzeimer. If we can be of any assistance in the meantime, please email us more information.
GM Customer Service
#347 of 492 Re: 2005 - 2007 Grand Prix GXP transmission Failures [gmcustsvcsarah]
Dec 06, 2011 (10:30 am)
05 Grand Prix here, 106k miles. Trans started shifting hard into 2nd and 3rd gears yesterday, had it looked at this morning. Trans needs to be replaced. Who can I contact about this? Thanks.
#348 of 492 Re: 2005 - 2007 Grand Prix GXP transmission Failures [copper354]
Dec 06, 2011 (11:50 am)
Just for my own information, was this diagnosis done at your dealership?
If you're planning on working with a dealership towards replacing the transmission (I understand this may not be for everybody) and would like to have Customer Assistance help in the process, please email us more information (including your name, contact information, mileage, the last 8 digits of your VIN, and the name of your involved dealership).
GM Customer Service
#349 of 492 Re: 2005 - 2007 Grand Prix GXP transmission Failures [copper354]
Dec 06, 2011 (1:21 pm)
I would get a 2nd opinion because it sound like your trans. Need a
(trans. Control module)