Does lowering the HHR void the warranty at dealers?????

 

Unless they can prove that the modifaction led to the failure of any item then the warranty is still intact.

https://www.chevyhhr.net/forums/problems-service-repairs-42/warranty-magnuson-moss-warranty-act-2751/

 

Correct, but remember that lowering a vehicle changes a lot in the ways of ground clearance also. So that can lead to any chassis damage also. 2" is a lot on a vehicle that is already so low it won't clear most parking blocks.

Plus the lowering components themselves won't be covered.