just bought my '08 HHR a month ago and as of last night my tail lights are not working...
brake lights and signal lights work fine but no tail lights.
any ideas?

 

Welcome to the site, check the under hood fuse box and the ground for the tail lights.
Also try turning the multi switch to turn the lights from auto to headlights.
It could be the Auto headlights light sensor

https://www.chevyhhr.net/forums/how-...cations-56504/

 

Just about the only thing it could be is both bulbs. I have had that happen a few times. Unless, it was dark enough for the headlights to turn on; DRL is low beam headlights/no tail lights.

Online Owner Manual via the link in my sig.

 

I went out to my HHR, looked at the console fuse panel by the passenger footwell, there is a fuse for stop lamps #9

 

Post #1 says tail lights, so start here.

 

Good catch George, thank you.

 

It was a blown fuse and a bad relay

 

Which fuse and which relay for future reference.

 

Relay # 68 and fuse # 69