Electrical troubleshooting

Recently got a 2011 Sierra. The cruise control and the steering wheel radio controls don't work, so I suspect a problem that affects both. Fuses are all OK. Any advice on where to start looking? Thanks...

Could be a clock spring issue. Is the airbag light on?

Could be a clock spring issue. Is the airbag light on?
No, airbag light initializes normally at startup, then goes out...

marty, even though airbag light not on, Stealthee might still be partially right;
since you mention you recently got the rig, does it have decal for the 07-14 GM
airbag recall? if so, previous owner could have taken care of that and tech when
they swapped takata, they disconnected steering lead wire for vol/etc, and said
oh well, i flagged hour for one airbag pull and it works..
might look into it; or might just be fuse..
i believe '11 GMC has inside fuse box under dash/behind steering wheel
(cover is removed by screwdriver, can't remember regular or jeweler's size)
cover has code numbers that correspond to radio controls, cruise, etc.
hope this helps..

I don't find evidence the airbag was replaced, but on the NHTSA site it does not show as an outstanding recall. So I'm guessing it's been replaced. And I also suspect something was left unplugged at that time. So there's my project for next weekend...