• Damaged OE shifter bracket bosses
• Early cases without shifter bracket bosses cannot be used in 1996 - 97 vehicles

In 1996 GM added bosses to the 4L60-E& 4L80-E cases for the shifter cable bracket. 1994 and 1995 cases with neutral safety switch (NSS) bosses cannot be used in 1996-97 vehicles because there are no mounting bosses for the shift cable bracket. 1996 & later cases with mounting bracket bosses may have broken or damaged bosses.

Install 1994 and 1995 transmissions or cases into 1996-97 vehicles using the Sonnax pan-mount bracket.

Additional Resources