# Grand Prix Tranny Issue **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [January 30, 2008, 9:07am UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127 "2008-01-30T09:07:30Z")\ **Posts on this page:** 20\ **Page:** 2
**Author:** ![ssdragon](https://avatars.discourse-cdn.com/v4/letter/s/3ab097/32.png) [@ssdragon](https://forums.speedlife.net/u/ssdragon)\ **Post date:** [February 1, 2008, 6:26am UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/21 "2008-02-01T06:26:06Z")
yours is an 05 right? ---
**Author:** ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA)\ **Post date:** [February 1, 2008, 6:45am UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/22 "2008-02-01T06:45:33Z")
> [@Rainbow 6 Vegas](https://forums.speedlife.net/t/rainbow-6-vegas/21420/102): > > yours is an 05 right? Yes mine is an '05 GTP. Just traded in the '02, and also had an '00, neither of which had tranny problems, but may have just been the roll of the dice. ---
**Author:** ![GNocide](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gnocide/32/5947_2.png) [@GNocide](https://forums.speedlife.net/u/GNocide)\ **Post date:** [February 1, 2008, 6:48am UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/23 "2008-02-01T06:48:08Z")
i tried a 97-98 and 99-by total chance best one was from jjs - it didn’t fail for me at all fully modded with a shift kit i got lucky i guess ---
**Author:** ![Gz21](https://avatars.discourse-cdn.com/v4/letter/g/5f8ce5/32.png) [@Gz21](https://forums.speedlife.net/u/Gz21)\ **Post date:** [February 1, 2008, 8:30pm UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/24 "2008-02-01T20:30:06Z")
Here is a page with some info on the 4T65E tranny. Not sure if it has your exact problem listed but might provide some help. I have a '00 GTP with 86k on it and I am just starting to have some problems with the torque converter unlocking and locking at low RPMs under load. Though I knew when I bought it 5 years ago there would eventually be a problem with the tranny I would have to deal with. ---
**Author:** ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA)\ **Post date:** [February 2, 2008, 5:54am UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/25 "2008-02-02T05:54:27Z")
> [@Q: Who are these wankers?](https://forums.speedlife.net/t/q-who-are-these-wankers/34682/9): > > Here is a page with some info on the 4T65E tranny. Not sure if it has your exact problem listed but might provide some help. psssst… you forgot the page 🙂 ---
**Author:** ![pruGAR](https://avatars.discourse-cdn.com/v4/letter/p/5f9b8f/32.png) [@pruGAR](https://forums.speedlife.net/u/pruGAR)\ **Post date:** [February 2, 2008, 8:04am UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/26 "2008-02-02T08:04:28Z")
> [@What a terribly phenomenal combination!](https://forums.speedlife.net/t/what-a-terribly-phenomenal-combination/34618/43): > > Did anyone have their’s serviced under warranty? Do the dealerships even do their own transmission work or farm it out? Depends on the dealer. At cochran we have 3 tranny guys. One does the trucks and the other 2 do the cars. Both of them have been doing it for years and rarely have come backs.Im not a mechanic but just from working around in the shop a shutter at low RPM in between gears sounds like a torque converter.just my $.02. also make sure you make a note that the tranny has to be hot or like you said request to ride with a tech. ---
**Author:** ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA)\ **Post date:** [February 2, 2008, 8:33am UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/27 "2008-02-02T08:33:46Z")
> [@Q: Who are these wankers?](https://forums.speedlife.net/t/q-who-are-these-wankers/34682/26): > > also make sure you make a note that the tranny has to be hot or like you said request to ride with a tech. Yeah, I never trust that they actually put the stuff in the computer correctly. Last time I printed out a detailed description of all the problems I was bringing it in for and handed them the paper. 😃 ---
**Author:** ![Gz21](https://avatars.discourse-cdn.com/v4/letter/g/5f8ce5/32.png) [@Gz21](https://forums.speedlife.net/u/Gz21)\ **Post date:** [February 2, 2008, 1:28pm UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/28 "2008-02-02T13:28:09Z")
> [@Kanye West- Graduation](https://forums.speedlife.net/t/kanye-west-graduation/34627/13): > > psssst… you forgot the page 🙂 LOL…man now I feel really dumb! Ok here it is this time. [http://www.tripleedgeperformance.com/4T65E\_Transmission\_Info.php](http://www.tripleedgeperformance.com/4T65E_Transmission_Info.php) ---
**Author:** ![Sinner6.0L](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sinner6.0l/32/6016_2.png) [@Sinner6.0L](https://forums.speedlife.net/u/Sinner6.0L)\ **Post date:** [February 2, 2008, 7:39pm UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/29 "2008-02-02T19:39:49Z")
> [@Q: Who are these wankers?](https://forums.speedlife.net/t/q-who-are-these-wankers/34682/9): > > I have a '00 GTP with 86k on it and I am just starting to have some problems with the torque converter unlocking and locking at low RPMs under load. your problem might just be the TCC ---
**Author:** ![Gz21](https://avatars.discourse-cdn.com/v4/letter/g/5f8ce5/32.png) [@Gz21](https://forums.speedlife.net/u/Gz21)\ **Post date:** [February 3, 2008, 7:21am UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/30 "2008-02-03T07:21:29Z")
> [@Modded mustang gt\< del slow](https://forums.speedlife.net/t/modded-mustang-gt-del-slow/34681/6): > > your problem might just be the TCC That is what I am hoping to. I have been trying to do alot of research to have a real good idea before I dig into fixing it. ---
**Author:** ![Sinner6.0L](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sinner6.0l/32/6016_2.png) [@Sinner6.0L](https://forums.speedlife.net/u/Sinner6.0L)\ **Post date:** [February 8, 2008, 8:51pm UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/31 "2008-02-08T20:51:27Z")
> [@Dear cell phone users,](https://forums.speedlife.net/t/dear-cell-phone-users/34664/16): > > it didn’t fail for me at all fully modded with a shift kit define fully modded. too many people have or had gtps that i never heard of ---
**Author:** ![GNocide](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gnocide/32/5947_2.png) [@GNocide](https://forums.speedlife.net/u/GNocide)\ **Post date:** [February 9, 2008, 5:49am UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/32 "2008-02-09T05:49:23Z")
pulley, gutted cat -3 in dp hybridynamics fenderwell cold air intake mechanical shift kit in the tranny- stuff this way before your time when club gp was in full force we dyno dayed/ raced/ modded once a month 99-2004- rip ---
**Author:** ![Sinner6.0L](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sinner6.0l/32/6016_2.png) [@Sinner6.0L](https://forums.speedlife.net/u/Sinner6.0L)\ **Post date:** [February 9, 2008, 6:12pm UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/33 "2008-02-09T18:12:06Z")
cool. it definitely seems i missed the boat here, oh well fuck it. I’m wanna throw some shit in the spare tranny i have now. I wanna put 3.29s in it, new input shaft and get a 3000 stall. I can’t believe my GT tranny has taken everything i threw at it. 1st gear is murder ---
**Author:** ![Shaggy](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/shaggy/32/5945_2.png) [@Shaggy](https://forums.speedlife.net/u/Shaggy)\ **Post date:** [February 9, 2008, 6:46pm UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/34 "2008-02-09T18:46:37Z")
> [@Things to show people in Buffalo](https://forums.speedlife.net/t/things-to-show-people-in-buffalo/34821/12): > > pulley, gutted cat -3 in dp > hybridynamics fenderwell cold air intake > mechanical shift kit in the tranny- stuff > > this way before your time when club gp was in full force > > we dyno dayed/ raced/ modded once a month > 99-2004- rip That’s heavily modded ??? ---
**Author:** ![HaNnIBaL64](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hannibal64/32/5954_2.png) [@HaNnIBaL64](https://forums.speedlife.net/u/HaNnIBaL64)\ **Post date:** [February 11, 2008, 6:54pm UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/35 "2008-02-11T18:54:42Z")
gonna say its a valve in the trans my blazer did the same thing and i had to change the valve body in the trans… 60 dollar fix ---
**Author:** ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA)\ **Post date:** [September 26, 2008, 5:38pm UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/36 "2008-09-26T17:38:52Z")
Took it back in again and they duplicated the problem this time. Did a rebuild and replaced 2nd gear clutch pack & valve solenoid. Also had an oil pan leak. Total cost of parts and labor was $1800. But I still had 3500 miles left on the extended warranty. 😃 ---
**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\ **Post date:** [September 26, 2008, 6:06pm UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/37 "2008-09-26T18:06:06Z")
congrats ---
**Author:** ![mtsman](https://avatars.discourse-cdn.com/v4/letter/m/71c47a/32.png) [@mtsman](https://forums.speedlife.net/u/mtsman)\ **Post date:** [September 27, 2008, 7:32am UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/38 "2008-09-27T07:32:38Z")
solenoid. I believe there are actually 2 of them that tend to go bad. never seem them start acting up at 58k but at least its fixed under warranty.:bigthumb: ---
**Author:** ![2003\_SSEi](https://avatars.discourse-cdn.com/v4/letter/2/b77776/32.png) [@2003\_SSEi](https://forums.speedlife.net/u/2003_SSEi)\ **Post date:** [September 27, 2008, 7:41am UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/39 "2008-09-27T07:41:07Z")
ya the Pressure Control Solenoid sets a DTC, that is “max adapt long shift”, very common in the 4T65’s i have seen the code appear anywhere from 20K to 120K Now its time to start Modding like us other 3800 freaks ---
**Author:** ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA)\ **Post date:** [September 27, 2008, 8:40am UTC](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127/40 "2008-09-27T08:40:39Z")
I don’t believe mine set any codes. For what it’s worth, the solenoid was part #24225825. And the 2nd gear clutch TSB was 06-07-30-23B. As far as modding, it’s staying completely stock. College starts in under 2 years and I need this thing to last! One broken toy is enough for me. 🙂 [Previous page](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127.md?page=1) [Next page](https://forums.speedlife.net/t/grand-prix-tranny-issue/195127.md?page=3)