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Pontiac Grand Prix Transmission Problems

217 messages,  Last post on Nov 17, 2009 at 6:18 PM

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#2 of 217 trans. issue - no joy . . by rayainsw Nov 29, 2005 (3:52 pm)
No joy.   Picked up my GXP this evening. They replaced the throttle body. They could not re-program the PCM. ( ? ) There is still an issue – an internal transmission problem. They have ordered the part – a ‘valve body’. Not available in the Southeast. Request has been forwarded to Lansing. (I am in the Metro tlanta area.) So – I was offered the ‘loaner’ (a Chevy HHR – 4 cyl.) or I could take back my car – as it was – to drive until the part arrives. Approx. 5 days = current estimate. So . . Bummer. - Ray Wondering (among several other things) how such a part could possibly not be available closer than Lansing . . . Replies to this message: chats1 (Nov 30, 2005 5:52 am) evandro (Nov 30, 2005 11:35 am) bob97 (Nov 30, 2005 12:06 pm) rayainsw (Nov 30, 2005 12:55 pm) rayainsw (Dec 14, 2005 5:07 am) and 3 more...
#3 of 217 Re: trans. issue - no joy . . [rayainsw] by chats1 Nov 30, 2005 (5:52 am)
Replying to: rayainsw (Nov 29, 2005 3:52 pm) So sorry about your transmission problem. Your car is a 2005, right? Couldn't they overnight the part? You should have insisted. Twice my dealer had a part overnighted -- once on this car and another time on a GTP. I went back the next morning and it was there. On the GXP the latch had to be replaced on the hood. Door ajar kept on coming on even though the hood was shut. I have a strong feeling that the GXP is going to be a "flop." I may sell my 2006 even though I've had no problems. But, still there are issues re this car. Good luck! I have to say one thing -- maybe my brother was right. He warned me about this going -- switching from 8 to 4 cylinders. He said this was done before and had problems. I don't remember what car though. Replies to this message: evandro (Nov 30, 2005 11:35 am) bob97 (Nov 30, 2005 12:06 pm) rayainsw (Nov 30, 2005 12:55 pm) rayainsw (Dec 14, 2005 5:07 am) evandro (Dec 14, 2005 4:02 pm) ocmike3 (Dec 15, 2005 9:10 pm) and 1 more...
#4 of 217 Re: trans. issue - no joy . . [chats1] by evandro Nov 30, 2005 (11:35 am)
Replying to: chats1 (Nov 30, 2005 5:52 am) Cadillac tried DOD in the late 70's, I believe. But then they used an 8-bit microprocessor with 2KB of memory. Now GM is trying the same with a 32-bit microprocessor with 1MB of memory. It was a good idea, but before its time.   Then again, as any unproven technology, it's likely to have a few hiccups for some years until it's debugged. Replies to this message: bob97 (Nov 30, 2005 12:06 pm)
#5 of 217 Re: trans. issue - no joy . . [evandro] by bob97 Nov 30, 2005 (12:06 pm)
Replying to: evandro (Nov 30, 2005 11:35 am) In addition to the much less powerful and less reliable microcomputer, the Caddy was also a more complicated 4-6-8 switcher and allegedly it was the middle 6 that caused the headaches. I always wished I had an 8 in my 97 Grand Prix, so I bought the GXP with my fingers crossed.   Ray, I’m sure all the regular readers on this forum have their fingers crossed for you right now.
#6 of 217 Re: trans. issue - no joy . . [chats1] by rayainsw Nov 30, 2005 (12:55 pm)
Replying to: chats1 (Nov 30, 2005 5:52 am) “So sorry about your transmission problem. Your car is a 2005, right? Couldn't they overnight the part? You should have insisted.”   Well, I suppose I could have said something more aggressive than I did. I was somewhat annoyed at the time, so I decided not to say anything until I was somewhat more calm. If the car had been either completely un-drivable – or at least somewhat more annoying to drive under my commute conditions – or if I had planned a long, outside the Metro area (cruise control safe) drive for this weekend - well, then I might have insisted more strongly.   The other factor for me here is that I have not driven a GM vehicle (except rentals) since I traded my ’97 GTP in late 2000. I am using this experience to ‘test’ the Dealer Service and the GM parts system. I do like this vehicle quite a lot – and when I approach 25K – 30K miles (typically 2 years + / -) I will need to decide if I want to extend the GM warrantee and keep it beyond 36K Miles. In addition to my perception of the reliability, the service I can obtain will be major factors in my decision whether to keep or trade at that time.   2 of my last 3 cars were Lincolns. The Dealer service and parts response (the few times required outside scheduled maintenance) were excellent.   If I do not hear anything by tomorrow AM, I plan to call the Dealer again.   Oh, and I see no indication that DoD is involved in this ‘event’. FWIW.   We’ll see. - Ray GXP Beta Tester, apparently . . . Replies to this message: rayainsw (Dec 14, 2005 5:07 am) evandro (Dec 14, 2005 4:02 pm) ocmike3 (Dec 15, 2005 9:10 pm) rayainsw (Dec 16, 2005 4:55 am)
#7 of 217 New Trans. Installed Re: trans. issue - no joy . . [rayainsw] by rayainsw Dec 14, 2005 (5:07 am)
Replying to: rayainsw (Nov 30, 2005 12:55 pm) After 2 failed attempts at repair (see above for symptoms) a new transaxle was ordered & installed.   Yesterday, I picked up my GXP, with the new transaxle installed. I have now driven it approx. 45 miles.   No more surge, buck, chuggle.   TCC lockup working as expected – and as it did previously . .   With luck, this will be the end of the saga.   - Ray Hoping every nut & bolt & connector is re-attached to spec. Replies to this message: evandro (Dec 14, 2005 4:02 pm) ocmike3 (Dec 15, 2005 9:10 pm) rayainsw (Dec 16, 2005 4:55 am)
#8 of 217 Re: New Trans. Installed Re: trans. issue - no joy . . [rayainsw] by evandro Dec 14, 2005 (4:02 pm)
Replying to: rayainsw (Dec 14, 2005 5:07 am) Sorry to hear that the tranny was indeed bad. I hope that this one lasts longer than the car.   Good luck.
#9 of 217 Re: New Trans. Installed Re: trans. issue - no joy . . [rayainsw] by ocmike3 Dec 15, 2005 (9:10 pm)
Replying to: rayainsw (Dec 14, 2005 5:07 am) Good luck with the new trans axle. How many miles did you have before it started to act funny? I have only put ~2400 on mine in 6 months (Its my weekend driver). Only complaint I have is a buzzy trim piece around the sunroof (which is why I prefer not to have them in addition to never using it) I must say that as a commuter car this car sucks!!!! but not in a bad way - its all the other drivers on the road! This car loves to kick and haul, but it was like being a rabbit stuck in a huge crowd of absent minded turtles... I drove it to work a few days and practically went crazy in the evening jaunt home. I think some of that hp transfers into the drivers seat and 70 -80 mph seems like a crawl. Replies to this message: rayainsw (Dec 16, 2005 4:55 am)
#10 of 217 Re: New Trans. Installed Re: trans. issue - no joy . . [ocmike3] by rayainsw Dec 16, 2005 (4:55 am)
Replying to: ocmike3 (Dec 15, 2005 9:10 pm) "Good luck with the new trans axle. How many miles did you have before it started to act funny?"   Approx. 7,200 miles. - on the way back from a 600+ mile drive over Thanksgiving weekend.   It went immediately and instantly from just fine to "oh, my goodness, there is a problem here". No gradual deterioration in trans. performance.   - Ray Hoping I'll turn out to be the only 1 . . .

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