Chevrolet Sonic Repair Manual: Tire and Wheel Balancing (Wheel Pilot Bore Greasing)
- Beginning with MY 2011 vehicle, pilot bore grease should be applied.
- To enable this, grease must be applied to the pilot bore to prevent the wheel from seizing onto the hub.
- Refer to Adhesives, Fluids, Lubricants, and Sealers for pilot bore lubricant part number.
- Do not use any penetrating oils, grease or other lubricants on the wheel studs to aid in removal or installation. Always install wheels to clean, dry wheel studs only.
- The dimension between the wheel and hub has been tightened in order to reduce mounting variation that results in 1st order tire variation. Only a very small amount of grease should be applied to the inner diameter of the wheel hub pilot hole of the wheel. Do not apply it to the entire pilot hole of the wheel or to the wheel bearing flange.
Tire and Wheel Balancing (Road Force Variation (RFV))
ALL wheel/tire assemblies must have a RFV within spec before being mounted
on vehicle.
Important: If a wheel/tire assembly is not within the RFV specification
after match mounting, th ...
Tire and Wheel Install Instruction
Installation Instructions Part Number
19156306
Note: Please read the following instructions carefully before mounting
the wheels on the vehicle.
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Rear Disc Brake Pads Replacement
Removal Procedure
Warning: Refer to Brake Dust Warning.
Note: Always replace disc brake pads in axle sets.
Inspect the fluid level in the brake master cylinder reservoir.
If the brake fluid level is midway between the maximum-full point and
the minimum allowab ...
Air Conditioning Compressor Oil Balancing
Draining Procedure
Note: Drain and measure as much of the refrigerant oil as
possible from the removed compressor.
Drain the oil from both the suction and discharge ports of the removed
compressor into a clean, graduated container. Rotate the compressor sha ...
Knock Sensor System Description
Circuit/System Description
The knock sensor system enables the engine control module (ECM) to control
the ignition timing for the best possible performance while protecting the engine
from potentially damaging levels of detonation. The ECM uses the knock sensor
system to test for ...
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