If you own a 2004-2005 GM Truck or SUV you should read:
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It made a world of difference in the shifting of my 2004 Escalade. Also increased in town gas milage from 14.4. to 15.9 MPG. I haven't had a chance to see what happens towing down the road.
CD and Joyce Smith - Lily, Violet, and Rose
1999 Casita 17' SD - "The Little Egg"
2007 Escalade - 6.2L V8 - 6L80E Trans - 3.42 Diff