I don't believe so. I have a '99 Trooper and I just had my 4L30e rebuilt. I had 80,000 miles on the tranny before it let go. I only had first gear. I had my tranny rebuilt at a fairly well respected shop. I asked if they could "strengthen" the 4L30E. This particular shop was not aware of any options specific to this model. They were able to add an "update kit" to the tranny (not exactly sure what that means). Including a new torque converter, my total bill was $1897.00. Apparently this was not one of chevrolets better trannys.