Last post on Aug 22, 2013 at 12:43 PM
You are in the Pontiac Grand Prix
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Pontiac Grand Prix, Transmission, Sedan
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#206 of 498 1997 grand prix se Transmission problems
Jul 13, 2009 (4:42 am)
My car a 1997 Pontiac Grand Prix SE 3800, when started and in drive will not move like its in neutral. It has shifted just fine up until about a week ago when checking the fluids i noticed that the tran fluid was low, I put the correct type of fluid and did not over fill it (I might have caught it so late?) . After that time when i would be driving for an extend period it would what i would call shift like someone who is learning to drive a manual.
#207 of 498 NO OVERDRIVE
Jul 20, 2009 (7:46 pm)
Just bought 99 grand prix GT and i like it a lot.....BUT i just noticed that when im driving on the highway my RPMs are pretty hight....70 mph little over 3000 which is way too much for overdrive....also if i put it in 3 the rpms are very similar....another simptom is when you let of the gas the rpms drop to idle...it seems like it shift in neutral and when you hit the gas again it has to come up to 3000 for it to start going again....
other than that the car shift and drive smooth and fast....
Someone please tell me there is a cheap way to fix it....
PS Love this site very informational.....:o))))
Jul 22, 2009 (12:28 pm)
Hey guys/gals. I bought a 2000 GP GT with 141k a couple weeks ago. I recently went on a small road trip (about 60 miles) and my friend and I noticed that my car was running high RPMs. Around 4000 80mph. My friend said that my overdrive might be out. Luckily I got a 18/18000 power train warranty with the car. I'm going to bring it into the shop tomorrow. I've been reading on here that a few have mentioned a hub assembly. To me I don't think that would cause the overdrive to go out. I'll let you all know what they find out tomorrow, if anything.
#209 of 498 Re: NO OVERDRIVE [redclownn]
Jul 22, 2009 (5:13 pm)
I have a GP GT 99 and my overdrive is also not working i am very interested in what you find out....I am taking my car to a pontiac place friday....im hoping its not gonna be too expensive....:o)))
Jul 23, 2009 (1:32 am)
I found this website that might help a lot of us that have the 4T65E transmission. I list a lot of problems people have listed on here.
4T65E Transmission Info..
Some things it lists are:
Neutrals at stops, Shudders on take off
Tach bounces up and down a few hundered rpm while cruising in lockup
No 4th Gear
and a few others.
Hope this helps a lot of us!
#211 of 498 EGR leaking hot air through EGR valves
Jul 29, 2009 (10:28 am)
have a Pontiac GrandPrix 1995 SE V6 3.1 VIN M. The EGR is leaking exhaust air through EGR valves. I changed the EGR with 2 used one and got the same issue. I installed a new one and I got the same issue. This hot air is causing cables and vacuum lines to burn. I changed the EGR gasket too and is not leaking hot air at the gasket. I verified any burned cables and there are no cables burned.
I changed the vacuum lines that goes to MAP sensor, PCV, and intake air tube.
This occurs when I push the throttle up to 1500 - 2000 rpms. This issue is annoying. Please help. I am thinking to change the TPS and the MAP sensors because these sensors usually controls the EGR but I am not sure.
#212 of 498 Re: NO OVERDRIVE [pohodar]
Aug 01, 2009 (6:25 pm)
just got my car fixed....it was the overdrive (or 4th gear) rod....at GM easy fix for 1300 dollars....!#$#%$% not very happy about that but works fine now...
#213 of 498 Re: 2001 Grand Prix GT won't shift into Park [bcarson1]
Aug 31, 2009 (8:39 am)
I have the same issues with my GP - now progressed to failing in Drive, 3 and 2 last week and now this morning Drive and 3 acting like reverse and 2 working...and locks not working except manually...
Did you come to any solution?
#214 of 498 Re: NO OVERDRIVE [redclownn]
Oct 05, 2009 (2:07 pm)
what did they find out? (why wasn't it going to overdrive?)
#215 of 498 Re: 2001 Grand Prix GT won't shift into Park [gp1998]
Oct 05, 2009 (3:11 pm)
I had a similar problem...come to find out my shift cable was the wrong one....so might wanna check out if your shift cable is connected properly.