CHEVROLET 2010 HHR - Manual (Page 382)

Press the button and then pull on the end of the wheel
wrench to extend the handle.
Removing the Flat Tire and
Installing the Spare Tire (All Models
Except SS)
1. Do a safety check before proceeding. See Changing
a Flat Tire on page 6-84 for more information.
2. Using the wheel wrench, loosen all the wheel nuts.
Do not remove them yet.
6-88