Chevrolet Sonic Repair Manual: Tread Wear Indicators Description
The original equipment tires have tread wear indicators that show when you should replace the tires.
The location of these indicators are at 60 degree intervals around the outer diameter of the tire. The indicators appear as a 6 mm (0.25 in) wide band when the tire tread depth becomes 1.6 mm (2/32 in).
Tires and Wheels Description and Operation
There are two types of tire and wheel balancing: static and dynamic.
Static balance is the equal distribution of weight around the wheel. Assemblies
that are statically unbalanced cause a bouncing ...
Valve Stem Oil Seal and Valve Spring Replacement
Special Tools
207649 Rod Hairpin Clips
547324 Flange Screws
EN-840 Pliers / Remover
EN-958 Installer
EN-45059 Angle Meter
EN-50717 Kit
J-43649–2 Rods
For equivalent regional ...
Other materials:
Removing the Spare Tire and Tools
The compact spare tire and tools are located in the storage compartment in the
rear of the vehicle. The jack and tools are stored below the spare tire.
1. Extension
2. Jack
3. Wheel Wrench
4. Strap
To access the spare tire and tools:
1. Open the trunk or liftgate. See Trunk (Sedan) o ...
Brake Caliper Inspection
Warning: Refer to Brake Dust Warning.
Inspect the brake caliper housing (1) for cracks, excess wear, and/or damage.
If any of these conditions are present, the brake caliper requires replacement.
Inspect the caliper piston dust boot seal (2) for cracks, tears, ...
Coolant System Flushing
Note:
Do not use a chemical flush.
Store used coolant in the proper manner, such as in a used engine coolant
holding tank.
Do not pour used coolant down a drain. Ethylene glycol antifreeze is
a very toxic chemical.
Do not dispose of coolant into the sewer system or groun ...
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