how do you change the headlights in a 2010 hhr ?

 

First off, welcome. Second, to change the bulb, you have to either go in through the wheel well, removing for 4 pop rivets and a bolt, or you should be able to take it to the dealership and they should do it under warranty..
Guys, am I wrong?

 

Welcome and Greetings! Try a quick search on headlamp replacement and you'll find several takes on the job at hand. Its a pain compared to most other vehicles, but if it looks like more than you're prepared to get into, the dealer is the next best step.