2005 Grand Prix Shifting Problems


Asked by Feb 04, 2014 at 02:51 PM about the 2005 Pontiac Grand Prix GT

Question type: Maintenance & Repair

I have a 2005 Grand Prix GT 3800 V6. I noticed the other day that it is having a hard time
shifting. Example, I will be driving 55 mph and the rpm's are at 2500. I am having the
transmission solenoid replace and a transmission service done on Monday and was just
curious if it is the same problem or if it is something different.

8 Answers


Have them add a qt of lucas transmission treatment to it when they service it.

2 of 2 people found this helpful.

Yep, he said that he was also going to do that. Hoping I don't need a rebuild! Would you have any idea why my trac off light comes on intermittently as well? When the light is on my cruise doesn't work either.


When the ECM sees a problem with the transmission it disables the traction control and cruise.

1 of 1 people found this helpful.

Interesting. The Trac off light just started coming on last week.


Let me know how it goes. My Grand Prix has been having shifting issues too. I plan to replace the Electronic Pressure Control Solenoid soon.

1 of 1 people found this helpful.

So another weird thing happened to it today. I was driving and the the trans temp up to about 113 degrees and the trac off light turned off and the door locks worked again. I either have bunch of things wrong with this car or they are all connected. Any input would be great!

1 of 1 people found this helpful.

Check all the grounds under the hood. Sounds like it is losing contact somewhere.


I have a 2005 Grand Prix Gt. I wanted to know some of the sign that the tranmission. Strange thing transmission oil with no leaks, car will go in gear after that it will not work. I want to know about it before towing to a car company. Needy help

3 of 3 people found this helpful.

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