Quote Originally Posted by 99FormulaM6r View Post
I pulled the MAF out of my nieces 2000 Grand Prix and got another MAP sensor out of a junked engine just to see if it made any difference. Although it never threw a P1811 code over the 100 or so miles I put on the new parts, shifting still seemed hard and sloppy. I think I'm going to order the TransGo kit from Triple Edge and get some fresh fluid/pan gasket and plan on doing the install sometime this week. I don't know what else electronically I can look at, other than an 02 sensor that has an intermittent heater circuit problem (which I don't think is changing anything for my transmission).
Funny. I had a MAF issue just as the tranny issue popped up. Must be a common "series of events" with these cars.