L liftedbigblock New member Joined Nov 27, 2012 Messages 1 Reaction score 0 Points 0 Location Phoenix Nov 27, 2012 #1 I have a 2003 Gmc Sierra 2500hd with the 8.1 and the allison. Looking for advice/experience on programmers. Thanks in advance.
I have a 2003 Gmc Sierra 2500hd with the 8.1 and the allison. Looking for advice/experience on programmers. Thanks in advance.
