Took the passenger door panel off and inspected the latch mechanism. There were 3 harness' plugged into it and all were intact to the latch, nothing felt loose but I did notice some moisture. Unplugged all 3, dried them off along with the latch with compressed air, put a little dielectric grease on each one, and reinstalled. Works like it should now. I went ahead and broke down the driver door and did the same. Interior courtesy lights now work as they should, alarm arms and sounds when door is opened, and everything is back to normal.
Thanks for the direction Nathan, greatly appreciated as usual.
2002 Silverado 2500HD LB7 CCSB LT
EFI Live by Rob at ATP, Edge CTS Insight DSP 5 control, S&B CAI, PPE boost valve, Pro Fab AIH, AirDog II 165, PPE WIF sensor delete plug, 5" stainless exhaust, Cognito braces & HD tie rods, H2's 315/70 R17 BFG's
2004 Tahoe LT
2006 Silverado Z71 LS
1971 Chevy C10