Just signed up after a search for a problem led me to this forum. Recently picked up an 07 LT with the 3.9 and was researching info on a minor problem when I found this site. GM guy for many years, mostly chevys. F-C was a 55 Olds if that dates me a little. ASE Master Certification. Current fleet includes the 07 Impala, 97 Sonoma, 96 Tahoe and the 59 Apache. Hope to check in from time to time. Thanks for the forum and the info it provides.