Last post on Aug 22, 2013 at 12:43 PM
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Pontiac Grand Prix, Transmission, Sedan
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#45 of 498 1997 Pontiac Grand Prix
Oct 14, 2006 (8:30 pm)
Just to let everyone know, I bought a 97 SE 3800 with a transmission going out. I put some Lucas transmission lube in it and got about 6mos of use out of it. I finally replaced the transmission in March. Fortunetaly, I am skilled enough I did this myself and it only cost me the $250 for the Tranny and about 12 hours pulling and 12 hours installing of my time on my back (which sucks when you don't have a lift). Right now my A/C, Heater blower motor quit working actually it only worked from settings 3 to 5, and now finally quit. I am going to replace the resistor pack and hopefully that fixes it. If anyone has any how to questions on replacing a tranny feel free to ask. Thanks,
#46 of 498 Re: 1997 Pontiac Grand Prix [justin_n_mo]
Oct 15, 2006 (9:18 pm)
Hey Justin, I don't know if you saw my posts on my Grand Prix GT 01 but I'm concerned with the transmission....it shifts hard only sometimes. I can go a few days without it happening but once it starts it won't stop until the car has been shut off for a few hours. I just flushed the tranny myself and it seems to shift smoother, but it still does it every now and then...any suggestions as to the problem??? Thank you,
#47 of 498 Re: Engine/Transmission? Surging at 45-55 mph [steve115]
Oct 18, 2006 (9:14 am)
my 02 is doing the same thing, it just started. have you found anything out on what was wrong? i have not dtc's.
#48 of 498 I've got all the problems, what's the solution?
Oct 18, 2006 (12:58 pm)
I've got a 2000 Grand Prix GT with 164K miles. I've got the whining when accelerating and turning at low speeds (power steering fluid???); I've got the tach floating when accelerating at the mid speeds (catalytic converter???); I've got the transmission slips every once in a while where it slams into gear (????).....where do I start?
#49 of 498 Re: Engine/Transmission? Surging at 45-55 mph [f350_6x6]
Nov 07, 2006 (5:07 pm)
No, I have not fixed it yet. Now that it is colder (and traffic is worse with few opportunities to accelerate) it does not seem to be as bad. I will post it here if I get it fixed.
#50 of 498 2002 Grand Prix Transmission Problems
Nov 15, 2006 (8:54 am)
I have a 2002 Grand Prix SE and when I get in the car in the morning when the engine is cold the transmission slips like I am on a piece of ice. After the car is warmed up there is no problems. What is wrong with my car? I just bought it a month ago and the day after I bought it this started Please Help me.
#51 of 498 1999 Grand Prix GT Transmission/Jerking Problems
Nov 28, 2006 (8:30 pm)
Ok. Add my car to the list of "problem children".
In reference to messages #43, 44, and 47, I am also having the surging/jerking with the tachometer jumping. It can be induced at any speed, but it especially happens when going up a long hill. If you are holding a consistent speed and then try to accelerate a little bit, the car begins to jerk and the needle does the same. My 1999 Grand Prix GT has a little over 60,000 miles on it and I am the original owner. I have had it do it between 25-30, 35-40, 45-50, 60-65, etc. It is very random. Sometimes it does it; sometimes it doesn't.
Prior to this problem, the dealership first tried replacing a throttle sensor, then the pressure control solenoid, and finally the torque converter. The car no longer shudders when it shifts between 45-55, but it will do the thing I described in the above paragraph. So, it went back to the dealership for a tune-up - had new spark plugs, fuel filter, had wires checked, and had air intake cleaned. It still jerks when I go up hills. So, today it went back and they cleaned some kind of air sensor (or something like that, can't remember) for the fuel injectors. They didn't charge me ... said to drive it a few days and see what happens. Well, I took it out tonight, drove it up a hill and the jerking began again.
I also had to have the pressure control solenoid replaced previously at the 30,000 mile mark.
Any help and suggestions of what to tell the mechanics would be appreciated.
#52 of 498 Re: 1999 Grand Prix GT Transmission/Jerking Problems [montana_cat]
Dec 11, 2006 (5:08 pm)
I have a 97 GTP with similar hesitation/jerking while climbing a hill. It feels like the tranny is slipping just a bit. Anyone found the cause of this yet?
Also-a heavy sputter/lagging occurs during heavy acceleration. Are they related?
#53 of 498 Re: 1999 Grand Prix GT Transmission/Jerking Problems [solomonsgtp]
Dec 13, 2006 (2:22 pm)
I went back to the garage last week for the second time. They said my catalytic converter was plugged. So, I had a new one put on (fortunately still under warranty!). The mechanic thought this WAS the problem.
Well, guess what? It still does the same thing. It is back at the shop today. They are going to keep it a few days and test a bunch of things. (sigh)
#54 of 498 2000 Grand Prix GT with surging problems
Dec 13, 2006 (7:26 pm)
Another follow-up to my earlier message regarding the surging/jerking with the tachometer jumping.
I took my GP-GT with 79,000 miles into the dealer and asked them to check the catalytic converter. They called me a few hours later and said the converter was fine but the ignition test showed problems and the vacuum test failed. They said I needed new ignition coils and wires and a replacment intake plentum because the old one was warped (it's plastic). Total cost about $1,200. I said no and paid the $70 minimum. I am not sure a they knew what the problem really was and I was not going to dump that kind of money in when I know it needs brakes, tires, and so on. I am seriously considering trading it in.