I have an 08' made in Aug 07' having problems with shift searching similar to what I have read in other postings but it is not eligible for the updated program 07217A. It has been to the dealer 3 times already. The first two time the dealer said nothing is wrong and made me to believe I was crazy. Third visit, new dealer and they did recongnize the problem HOWEVER they said GMC has not come up with a new program to fix it. Is there any info out there on the 08's not covered under the service bulltin that are experienceing the same problems?