CG,
Here are a couple of threads to take a look at:
http://www.elcova.com/groupee/forums?a=tpc&s=2826088551&f=6706011751&m=717607575 3
http://www.elcova.com/groupee/forums?a=tpc&s=2826088551&f=5106011751&m=846606109 3
Unfortunately, it looks like a pretty hopeless cause. GM is NOT interested in helping at all. Wiring appears to be different, and a custom reprogramming of the body computer would be needed. When I called Delphi, the lady told me they tried a retrofit, but the turn signals would no longer work on the test vehicle!
Klaus
"God made some men big and some men small, but Sam Colt made them all equal."