https://www.chevyhhr.net/forums/brak...age-nut-61942/

https://www.chevyhhr.net/forums/brak...says-no-51562/


look from post #27 on for cage nut information and pictures in here

https://www.chevyhhr.net/forums/driv...n-62353/page3/

 

I changed the struts and Left side control arm myself no problems and right side control arm had same bolt seize up an captive nut broke free as described. Didn't want to work out in snow so I took it to the dealer on Monday. Got it back today all done, about $250 for the repair after I provided the control arm.