Chevrolet 2013 Sonic Owner's Manual page 326

11-4 Service and Maintenance
Check accelerator pedal for
damage, high effort, or binding.
Replace if needed.
Visually inspect gas strut for
signs of wear, cracks, or other
damage. Check the hold open
ability of the strut. See your
dealer if service is required.
Check tire sealant expiration
date, if equipped. See Tire
Sealant and Compressor Kit on
page 10 61.
Inspect sunroof track and seal,
if equipped. See Sunroof on
page 2 17.