Hi,
Here are the part numbers and on the bottom gives the web site for ordering. They are cheaper than getting them at the dealer. I am placing an order today and will give it a shot.
I just realized the attachment is hard to read so here they are pasted in. The web site is
www.gmpartsdepartment.com
Part Number: 1999443 List Price Core Price Your Price
Steering wheel - Steering wheel and trim - Switch - Radio control Seek & volume - 2003-06, w/accessory control 2003 - 2006
$23.79 $0.00 $15.59
Part Number: 1999442 List Price Core Price Your Price
Steering wheel - Steering wheel and trim - Switch - Radio control Program & source - 2003-06, w/accessory control 2003 - 2006
$26.38 $0.00 $17.30
Part Number: 21997739 List Price Core Price Your Price
Steering wheel - Steering wheel and trim - Switch - Info display Select - 2003-05, w/accessory control 2003 - 2004
$27.64 $0.00 $18.12
Part Number: 21997738 List Price Core Price Your Price
Steering wheel - Steering wheel and trim - Switch - Info display Trip & fuel - 2003-05, w/accessory control 2003 - 2007
$22.89 $0.00 $15.02
Good luck.
Deb