Hi XXXXXX. Thank you for asking your question on Just Answer.
I know it sounds crazy, but you need to check fuse # 27 (labeled OH BATT/ONSTAR) and fuse # 29 (labeled RAIN).
These fuses are located in the REAR fuse block, which is located beneath the left rear seat. I will try to get you a diagram, but I am having trouble uploading it right now.
Take Care, Greg A.
Master Troubleshooter
Working with Electronics & Cars for 25+ Years