Pontiac Grand Prix GXP 2006

presrizd

If I remember correctly I had the same problem at about 60k. I had them replace the torque converter which helped for a while. The problem started coming back at about 110k intermittently and now at 145k it is to the point where the car is stumbling when cruising or going uphill. You can see the rpms jump up and down when this happens. I really like the car and will explore having the torque converter replaced again.

sphinxrb

lboogierox88, replace the converter quickly, before it blows, otherwise you may need a rebuilt trasmission. Read my other posts, you need to also install a transmission cooler, trust me. I had my transmission rebuilt 3 times before discovering the actual problem. Yes your trans temp is in the OK area of the gauge, but this temp is not good for the torque converter; the converter blows up when it gets too hot (again, even though the temp is ok for the transmission itself), and all those parts go flying through your transmission, ruining it.

allpontiac

I have a 2006 GXP with 40 thousand miles. No problems with transmission at this time. But I would like to install a trans cooler to play it safe. Could you please tell me what size trans cooler you installed and the location where you placed the trans cooler. Thank You

sphinxrb

lboogierox88...I don't really know. After the shop I went to rebuilt it for the 3rd time, and he had researched what was causing the issue, he discovered it needed a transmission cooler. To go back a bit, he rebuilt it the first time, lasted about 3K miles. After he rebuilt it the 2nd time (at his cost), it lasted about 3k miles. Then he was in the process of rebuilding it a 3rd time, he installed the cooler for me for free. You could try calling him, he will probably remember it I'm sure. Just tell him it was a 2005 Pontiac Grand Prix GXP V8 Maroon color he did 3 times. He can probably tell you what cooler and where it was installed. Call Wayne at Gene's Transmission (Norfolk, VA) 757-461-3530. If fact, he joked about going out for beers to celebrate the solution. He has a great shop, has a great reputation for about 30 years; but this was a manufacturer design problem, that he had to figure out; unfortunately, by trial and error, and research.

paulette1965

I have a 2007 grand prix and now mine is banging hard from 1st to 2nd...bought stop slip helped some but today I noticed it everytime I shift from 1st to second....it seems to be getting worse but does stop after sitting a day or two...how much was the torque convertor to replace and the tranny cooler??? I love my RED car it's my baby and I have been driving like a granny to save it....please let me know about what you paid.... :shades:

sphinxrb

Lboogierox88, I don't know what a torque converter costs, as I had to replace that and rebuild the entire trasmission. See my other posts on Edmunds about this, plus some at GM Inside News... http://www.gminsidenews.com/forums/f31/saying-goodbye-gm-grand-prix-gxp-junk-car- -97244/
As you will see in my other posts, there is no point in just replacing the torque converter, you need to replace that and add a transmission cooler.

gmcustsvc

paulette1965,
Let us know if we can check int anything further for you on this (even calling a dealership to get a quote - we'd be happy to help however we can). Please contact us at socialmedia@gm.com with more details (including your name and contact information, the last 8 digits of your VIN and mileage, and a summary of the situation so far with your inquiry).
Sarah, GM Customer Service

msu98

Hello, I bought my first 2006 Grand Prix GXP and had to replace the center Driver Info Center (bought one from ebay). I'm sure it may be something simple, however, how do I reset the mileage to my vehicles original. I only have 63K miles and it is reading 98K. Can someone advise? Please! Thanks in advance