Thread: 06 Grand prix GXP rev/misfire issue???

Originally Posted by Derickgxp

So I just bought a 06 gxp with 91,000 miles and had a code for oil pressure sending unit. Went to autozone and replaced the sensor and code went away. Now I have this odd rpm rev happening. ill be driving on the highway at a constant 70mph and the rpms will go up a couple hundred like your tapping the gas. this happens on cruise and in town at slower speeds too. So I went back and got a new oil sensor to give that a shot...the revving issue disappeared....till I had it parked a few hours and fired it up later that day. issue popped back up. I figure it has something to do with that oil sensor but not positive. started happening when I changed the sensor the first time and now I have this problem.... no idea whats happening and I cannot find anybody else that has a similar issue. Hope someone has some advice/information.

Sounds like the first stages of trans failure...

yea that's funny cause thats what I thought too because we had a tcc code also. long story short got screwed when I bought the vehicle. had codes for trans, wheel bearing, and oil pressure sending unit. Just got it back from the tranny shop today cause it was shifting horrible the day after we bought it. Luckily i purchased the 24,000 mile warranty with it so it was fixed farely easily. but trans has been rebuilt and shifts like a dream. so got the new oil sensor today and the rpm issue went away for a little then came back. I was pissed at first cause I figured it was still the trans but im 99% sure its not.