One of the codes coming up on my Xtool D7X scantool is for ABS Relay - C0201-04, but I cannot find such a thing on the HHR? Is this something like the high brake light relay that's in a different place from most of the other relays??? Or is it just a generic description for the code & something else is causing it???

 

https://fuse-box.info/chevrolet/chev...uses-and-relay

I see a fuse in the interior fuse panel

 

That code is actually "ABS Enable Relay Contact Circuit". The relay is within the EBCM.
Here is a pdf from OnDemand:
c0201.pdf

My first thought would be a pin in the commector.

 

Thanks for the PDF!!! Xtool D7X scantool just shows "ABS relay circuit". While the suggested fix is very similar to your PDF, the D7X was also talking about pulling & testing the ABS relay, and replacing if necessary. So I'm guessing that was more of just a generic repair guidance instead of being vehicle specific....

 

How old is your battery? A weak on can cause a plethora of codes.

 

Date code on it is Oct 2025, was installed new when I got the car in February. From what I've been seeing, it stays at about 12.6V with key on, engine off, headlights off.