Hey guys, looking for some help. I have a 2002 Grand Prix GT. it's currently Throwing code P1811 and I'm just looking for a way to fix it. Is this something that is going to kill my transmission? Ive noticed it happens between 3rd and 4th gear. Car seems to hold around 3000 rpms a little to long and eventually you will feel it shift to correct gear. I've checked Fluid and I'm good there.
I read on here someone sells a shift kit that fixes this issue. Just looking for someone to point me in the right direction.