GM 200 & 200C Transmission Superior Shift Correction Kit This Shift Correction Kit from Superior will improve all Regular, Heavy Duty, and Towing applications for the 200 and 200C transmissions. This Shift Correction Kit corrects or prevents the following problems: 2nd gear starts, harsh reverse engagement, down shift bump, weak 2-3 shifts, slow reverse engagement, no passing gear above 45 MPH, and improves overall performance. This Shift Correction Kit will come with installation directions in English and Spanish, illustrations and the drill bits that the installation will require. We offer a wide range of Superior products! Be sure to check my other listings!