2019 GMC 2500HD RF641 no lock or unlock but start function works

Question

2019 GMC Sierra 2500HD diesel WT 3x lock and factory remote works fine.  Installed the RF641 kit and remote start works but lock and unlock do not from the RF kit key fobs.

 

EVO-GMT7 installed with T-harness.

Answer 1

If i recall you might want to check your settings. i myself have the rfk912 for my 2500. Make sure you have checked your adavced settings in the fortin. I don't recall having to change the settings as i went with the GM-5 and the harness connected to the datalink via t harness and had no issues

Comments

I acutally checked the settings and they are selected.  I added the RF kit to my 2008 with no issue but this newer truck is a bit "smarter" than my older one.