Last post on May 02, 2013 at 2:21 PM
You are in the Pontiac Bonneville
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Pontiac Bonneville, Transmission, Sedan
#70 of 74 1997 Bonneville
Aug 07, 2012 (3:16 pm)
I'm having a issue with my car. When it warms up it begins to shift weird, mainly between 3 and OD. it will shift in to OD and the the revs will bounce. also wile going up hills in OD it will bounce the revs as little a 600 and as much as 1500 RPMs it seems like it wants to down shift but can't. If I let off the gas and then ease back in to it it shifts it self down to 3 and will cont with no problem. Any ideas?
#71 of 74 Re: 1997 Bonneville [buddy0310]
Aug 18, 2012 (2:59 pm)
Buddy: We had a 1998 B'ville that started slamming and missing shifts. The first symptom only occurred when turning right AND going slightly uphill. Sounds strange but as it got worse it slammed and shifted very hard after over revving the engine. Took a very bright service foreman at the Pontiac dealer (Same as Buick, Chevy, Caddy) to diagnose the external shift solenoid on the AT. The screens clog up after some time and even a trans fluid change does not always get it. They replaced the external solenoid w/o dropping the trans so it was relatively cheap (vs. $2000 or more for exchange trans).
If you get a good trans guy he will know about it. Yours may be an internal problem, that is more complicated. Good luck.
Aug 22, 2012 (4:45 pm)
Last week, my car gave no warning & quit working! The motor locked up...there is no coolant in the oil. Someone thinks it might be the 'torque converter', any suggestions?
#73 of 74 Re: 2003 Bonneville SE - Transmission Slipping/Banging into gear [emeacham]
Feb 10, 2013 (6:06 pm)
Hi i was having the same problem as you described did you ever find out what the problem was ? ive took it to 3 shops and they dont know what is wrong plz help
2002 pontiac bonneville
May 02, 2013 (2:21 pm)
I have a 2003 Pontiac Bonneville..today it didn't want to go into reverse..i finally got it to go but lunges everytime I take off from a complete stop.its never done this before.could it simply be in need of fluid or such?