how do i get tail lights.

Do your front lights come on?

http://www.chevyhhr.net/forums/problems-service-repairs-42/2007-hhr- electrical-issue-tail-lights-35587/page2/ -- check this out. About same issue. They found a relay under hood on drivers side by windshield to be the issue. Also these cars are known for all sorts of electrical issues. Might what to check for loose wires around the fuse boxes.

http://www.justanswer.com/chevy/5dcvw-chevrolet-hhr-ls-08-chev-hhr- rear-running-lights.html

make sure they r grounded good

my problem is mty tailights r not working but all 3 lights stay on in back when car is running but when i press brake they alll disapear for 3 seconds then come back on what is the problem 2 fix thanks