If I get a down pipe to my 2009 cobalt ss if i ever take it in for warrenty work and before i go i put the stocker back on could it void my warrenty or will they be able to tell?

come on 50 views and no post?

 

Unless the problem stems from the aftermarket dp, your warranty is fine.


https://www.cobaltss.net/forums/general-cobalt-68/your-rights-about-your-car-warranty-aftermarket-mods-7439/

 

I personally have no faith with the Magnuson-Moss Act.

If they are going to deny you with warranty work, wave the act in fornt of them with do nothing other than **** them off more. Too many people tries to scam warranty work by putting stock parts back when their mods broke their car and they know the practice very well.