I have a 2020 1500 and live in an area where GMC and Chevy trucks, especially push starts, are becoming increasingly popular targets for thieves. I'm interested in putting in a killswitch via the ignition/starter, but would likely have an installer do it as I'm not experienced enough with that type of work on my truck.
My more immediate idea is to pull an ignition/starter relay when I park but I don't know which one to pull. I want to avoid anything involving the fuel system or battery and have heard that a starter relay would do the trick.
Here is the manual
for a 2020 1500. I think the one I need to pull is #36 as shown on page 368 but any help would be appreciated! I wish there was a fuse or relay in driver side fuse panel that would disable the truck but I can't find one.