avital 4113 and dball2 issue

Hey guys! I've recently learned the concept of installing a remote start system into vehicles and I did a 2004' Tahoe lastnight. Well the install was pretty straight forward, I used d2d between the dball2 and the avital (knock on wood haven't had issues with d2d). Everything went fine, install went well, fired up without any issues. Well the last thing I did before giving it off to the customer was program his factory key fob because he said he's never known how to program it. I went ahead and did that for him so that he has lock/unlock features. Well he comes to pick the vehicle up and all of sudden the remote start stops working... I hear the internal relay clicking, but not start. Would programming the factory key fob while utilizing d2d cause an issue?

Bump.