So after about a year or so i finally finished the engine swap on my 2003 GMC Envoy XL 4.2 I6. After hooking everything back up and reconnecting the battery my shift indicator isn't working. The indicator is a little line that lights up on the cluster under each gear so you know what gear you're in. I had replaced the Neutral safety switch and everything worked fine before I had the engine/trans problems. Now that everything is back together the indicator does NOT work on D321 but it does work on PRN. Everything seems to be working just fine except the indicator lights. What could possibly be the cause of this? Maybe a harness or neutral safety switch (even though it's practically new?). It's a very minor thing but I'd still like for it to work properly. Any help is appreciated!!