Chevrolet Sonic Repair Manual: Cleanliness and Care
An automobile engine is a combination of many machined, honed, polished, and lapped surfaces with tolerances that are measured in ten thousandths of an inch. When any internal engine parts are serviced, care and cleanliness are important. A liberal coating of engine oil should be applied to friction areas during assembly to protect and lubricate the surfaces during initial operation. Throughout this section, it should be understood that proper cleaning and protection of machined surfaces and friction areas are part of the repair procedure. This is considered standard shop practice even if not specifically stated.
When valve train components are removed for service, they should be retained in order. At the time of installation, they should be installed in the same locations and with the same mating surfaces as when removed.
Charging System Description and Operation
Electrical Power Management Overview
The electrical power management system is designed to monitor and control
the charging system and send diagnostic messages to alert the driver of possi ...
Drive Range, First Gear Engine Braking (Gen 1)
When the gear selector lever is moved to the Drive (D) range from the Neutral
(N) position, the transmission will provide engine braking. In this operating range,
the normally-low 1234 pressure co ...
Other materials:
Adding Equipment to the Airbag-Equipped Vehicle
Adding accessories that change the vehicle's frame, bumper system, height, front
end, or side sheet metal may keep the airbag system from working properly. The operation
of the airbag system can also be affected by changing any parts of the front seats,
safety belts, the airbag sensing and ...
Hydraulic Brake Component Operation Visual Inspection
Disc Brake
With the tire and wheel assemblies removed and the brake rotors retained
by wheel lug nuts, visually inspect the brake caliper piston dust boot (2)
sealing area to ensure that there are no brake fluid leaks.
If any evidence of a brake fluid leak is p ...
Fuel Tank Fuel Pump Module Replacement (Steel Tank)
Special Tools
EN-48279 Fuel Sender Lock Ring Wrench
For equivalent regional tools, refer to Special Tools.
Removal Procedure
Relieve the fuel system pressure. Refer to Fuel Pressure Relief.
Remove the fuel tank. Refer to Fuel Tank Replacement.
Disconnect the ...
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