Last post on Aug 22, 2013 at 12:43 PM
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Pontiac Grand Prix, Transmission, Sedan
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#287 of 498 2006 Pontiac Grand Prix 3.1L w/trans problems
May 19, 2011 (2:38 pm)
Not sure if this will help but at my wits end. About a couple years ago the car started "surging", RPM's would fluxuate up about 200-300. Like the transmission was "slipping". It was rare in the begining, and not at any particular time. Started to get more frequent as the car was driven more. (I drive some where between 2500-3500 miles per month.) Transmission shops all said nothing was wrong. About six months ago it would "hard shift" on the initial acceleration, but be fine after wards. Two more mechanics said nothing was wrong. NO codes thrown, no metal shavings in the pan, fluid not burned or discolored. Today, the car starts "hard shifting" in each gear shift through the acceleration to traffic speed but seems to be fine after words. A friend thought it may be the pump but not really sure. The car is my job, I am an independent contractor as a courier. I have another Grand Prix, a 2001 that the trans has already been replaced on so I knew buying it that the GM transmission was tempramental. So maintenance has been done at the specified intervals since it was new. Am I really screwed? I have been reading previous posts and they are all pretty much the same thing, except for minor details. It is really frustrating to get the "don't knows" until a major part goes out that costs the consumer in the 1000's. Any help would be very appreciated.
#288 of 498 Re: 2006 Pontiac Grand Prix 3.1L w/trans problems [kmyers8]
May 20, 2011 (8:35 am)
Have you spoke with your local dealer of choice? Can you please email me with your VIN, complete contact information including address and phone number? I look forward to your response.
GM Customer Service
#289 of 498 2001 Pontiac Grand Prix 3.8
May 20, 2011 (1:51 pm)
Ok I am at my wits end with this car I am about to just get rid of it! We have changed the plugs & wires & coils, and the fuel filter, and the stupid thing is still running like garbage! It's like it's not getting any fuel but yet it's not throwing any codes. You push on the gas & the RPM"s raise but it's not going any faster & then when you let off the gas it feels like it shifts but then it jerks after that like your running out of gas can anyone help me with this?
#290 of 498 Re: 2001 Pontiac Grand Prix 3.8 [litz2001]
May 27, 2011 (1:28 pm)
I have a 2000 Pontaic Grand Prix GT that I am having the same problem. As I am driving the car and as I push on the gas the RPM gage will raise to 3 or higher but the car will not engage. I have to let off of the gas and then the car will shift. Sometimes the car will engage after I let off of the gas but sometimes I have to do that several time before the car will engage. However the check engin light is on and the codes it is reading is PO404 EGR Circuit Range/Performance & PO410 Sec. Air System Malfunction. I have noticed that the car would shift fine until the check engine light appeared. I will let you know if changing these parts will have anything to do with the shifting problem but i do not believe it will help with my problem.
#291 of 498 Re: Engine/Transmission? Surging at 45-55 mph [steve115]
May 27, 2011 (1:53 pm)
I am having the same problem. I have a 2000 Pontaic Grand Prix with 178,000 miles. I just has the transmission rebuilt because it would not go into 1st gear. Now since I recieved the car back I have noticed that sometimes when you push on the gas while driving the RPM gage will go to 3 or higher but the car will not enagage; I have to let off of the gas so the car will shift and sometimes I have to do this several time before it will engage. I was told that it is an electical problem. I have replaced the computer brain but that did not solve the probelm. I am going to replace the Speed Control sensor next. I love my car also and this seems to be the only problem I am having soI am not giving up. I will keep you updated.
#292 of 498 Re: 2001 Pontiac Grand Prix 3.8 [litz2001]
Jun 03, 2011 (5:58 am)
I have taken my car to a tranmission shop because the first gear was out and had the transmission rebuilt. Once I received the car back I noticed that the car was shifting hard and the RPM gage would rise but the car would not engage. I took the car back and they told me it was an electrical problem and they were unable to fix it. I took my car to another transmission shop and told them the RPM gage rises but the car does not engage. I was told it is the torque converter and now my car runs great. Please have your torque converter checked. I wish you luck with your car.
#293 of 498 Re: Transmission Problems? [bman64]
Jun 08, 2011 (2:54 pm)
Rubbing noise is the wheel bearings and has a sensor. That controls the trac control thats why yr trac and abs light are on
#294 of 498 Re: 2005 Pontiac Grand Prix GXP [tchesser]
Jul 13, 2011 (6:58 am)
I have a 2007 GXP with Tap shift that I have had a shifting problem with, it first started with the computer stating a engin power problem, so the dealer replaced the gas peddle sensor, but i still had some hesitation problem. this week the transmission had a wineing sound and i had no gears at all. Had to have it towed to the dealer and Im waiting to hear the out come . It only has 62,000. easy miles on it. I will be very dissapointed it it need a trans. Any ideas ???
#295 of 498 Re: grand prix 2008 [kate43]
Jul 13, 2011 (6:33 am)
Hi Kate 43 , Im hving the same issue with my GXP and replaced the sensor . as of yesterday I have no gears at all, had to have it towed to dealer and Im awaiting to hear what the problem is. It only has 62000 easy miles . I will keep you posted on the out come, friday im told
#296 of 498 2007 GXP no gears
Jul 13, 2011 (7:05 am)
I have a 2007 GXP, Two month ago or so it started with the reduced power message on the computer. got it to the shop that day and they hook up the test and it stated that the peddle sensor was in question. so he reset the computer and the throttle body was cleaned out. It still ran with hesitation. two days ago the transmission was not pulling when the gas paddle was applied and I schedule and appointment with the dealer, on my way to take it to the dealer the trans made a wining noise and I lost all gear, yep towed. It only has 62000 (easy) miles , while its a power plant of a car I dont drive it that way. Im told they will have a answer on friday. But the problem sounds near the same to most on this site . Does GM have any recalls on the transmission or this problem at this time ? The peddle sensor was replaced prior to the transmission failure