What needs to be repaired if my power windows, locks and mirrors are all out on my 2007 H3
I can only assume you checked the fuse,s,and if good,i think you may need to check the wiring to the main control switch in the driver door,if it look,s ok,then replace the main switch.
Search Hummer H3 Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Hummer H3 Experts