Tools and parts need:
New rotors and pads your choice (EBC for me
Jack, lugnut wrench
15MM socket and wrench
metal coat hang or wire
flashlight/troublelight if needed
1) Get jack and lugnut wrench out of spare tire compartment or use regualr jack with HHR adapter
2) Place jack on lift area mine had mark on running board to help me find it better
3) Loosen lugnuts on wheel while wheel/hhr is not jacked up makes it a little easier not jacked up(doesnt slide)
4) Jack the hhr up
5) Unscrew lugnuts and remove wheel
6) Unscrew the two caliper 15MM bolts around 1 and 4 oclock position on right side(wrench is one above image) and 11 and 8 position.
7)hang caliper using metal coat hanger or something similar on right side there is a nice hole to hang coat hanger(striaght above the wrench in image above)
8)My rotors had metal piece to hold rotors in place on the 11 and 2 position. Easiest way I found to remove them was using needle nose pliers and twisting the metal stoppers back and forth untill they broke
9)Rotors should slide off now
10)put the new rotors on
11)Might need to put the cyclinder that pushes pad against rotor back in so pads will slide on the rotors. I used a big adjustable wrench with the old pad on and squeezed the wrench to depress the cylinder(may not be the correct method but it worked for me, no problems)
12)Pads will slide out of the groves and new ones will slide in. I removed the clip on the old inside pad and put it in the new pad.
13)Put caliper with new pads on rotor and tighten bolts back up. Make sure they are on there very tight.
I decided to paint mine
14)Put wheel back on and tighten lugnuts to 100lbs of torque(GM recommendation)
15)Remove jack and do other side
Light from above
Sorry about quality of pics used camcorder