Hey Treble Hook,

Glad you brought this issue to the forums. If you'd like me to look into anything regarding your HHR's emissions warranty, I'd be more than happy to do so. PM me with your VIN and contact info and I can assist with any questions or concerns you might have.

Regards,

Geoff G.
Chevrolet Customer Care

 

Take Geoff up on this , Treble Hook your ride is 8 years old but under 80,000 miles you might get this under full warrenty

 

I think I'm having this problem now. Noticed it really bad tonight while waiting in the drive thru. I have an 06 LS with 57k miles. I assume there's no chance they'll cover it under warranty but I'll mention it when I go in for service in a couple weeks.

Hello to everyone. It's been like a hundred years since I posted here.

 

I would look at the flex pipe.

 

Yes the flex pipe, and welcome back!

 

nice, thanks guys! I already mentioned it to my service advisor.

 

At a GM dealership, they most likely will not cut the down pipe and weld in the new flexpipe as that is considered modifications to the catalytic converter

 

ok thanks Oldblue!

 

Had the exact same rattle, and it turned out to be just the resonator which cost $225 to fix.

 

His was flex pipe, not exactly the same as the resonator, but cost for parts and labour about the same

this is in CDN

https://partsavatar.ca/walker-usa-re...assembly-56248