See the short version here:
See 204k mile engine disassemble HHR engine here:
Easy engine oil change on a 2014 Chevrolet Equinox, good advice, and fun stuff.
Yes, I was wrong about the battery in the engine compartment. That was my HHR 2006. In the infinite wisdom of Chevy, they put the ECM computer over the battery, hidden from view. I had to change the battery shortly after making this video.
Video credits to J. Hunto’s Garage YouTube channel