DRL is likely a 'progammable parameter' on the 2011 1/2 tons. The beauty of multiplexing and networking is that computer code takes the place of actual hard parts. As stated there is no longer a physical resistor or relay for the DRL system. Instead, the body control module (aka interior fuse box) provides a pulse width modified ground in order to reduce the on time of the headlamp. This is programmed into the BCM, and of course there's no difference between the BCM on US and Canadian units save for the programming.
The next time I have an '11 in my bay I'll hook it up to the IDS and check out what parameters I can program. For sure it's open to programming on late model Super Duties and E-Vans (I've turned on DRLs on these units entering the country), but I can't remember 100% if 1/2 tons can be modified the same way.
2003 GMC Sierra 3500 -- dually, 4x4, hasn't blown up yet and that's what i look for in a truck
Ford Doctor -- They come in broken and leave fixed. Ford of Canada Master Tech