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:
Indicator/Warning Message Description and Operation
Indicator LIGHT ON
Refer to the owner's manual for the descriptions and explanations of all
indicator lights.
For diagnosis and repair information related to an indicator light, refer
to the System Diagnosis and the Description of Operation that the message relates
to.
...
Brake Drum Diameter Measurement
Warning: Refer to Brake Dust Warning.
Remove brake drum. Refer to Brake Drum Replacement
Clean the brake shoe lining contact surface of the brake drum (2) with denatured
alcohol or an equivalent approved brake cleaner.
Using a brake drum micrometer (1) calibra ...
Exhaust Manifold Heat Shield Installation
Install the exhaust manifold heat shield (2).
Caution: Refer to Fastener Caution.
Install the 3 exhaust manifold heat shield bolts (1) and the washers and
tighten to 8 Y (71 lb in).
...
0.0054