How do I change the language on the display on my truck?

I have an '06 Silverado extended cab z71 off-road truck. The electronic display right below the speedometer is in some weird language, like it writes boucler ceinture when you dont have your seatbelt buckled and shows totilaseutur for the miles on the truck. On the owners manual it says there is a control for changing the language on the steering wheel but there isn't, so how do I change the language?