Just Found Out Some Info That Might Be Useful. The Early 05 Goats Had Power Seats That Were Herky Jerky When Moved Forward Or Reverse. If This Is The Case With Your Car, Take It To Your Pontiac Dealer And They Will Install A Plastic Piece Which Will Make It Better. Later 05's Were Corrected At The Factory (these Are Still Somewhat Herky Jerky, But Are Much Better). I Found This Out Because My 05 Seats Seemed A Little Herky Jerky, I Took The Car In To The Dealer, They Checked And Said Mine Had Been Corrected At The Factory With The Plastic Piece And That This Was A Little Known Problem And That Early 05's (WITHOUT THE PLASTIC PIECE)Were Alot Worse. Basically, The Fix, Simply Makes It Much Less Noticeable.