Chevrolet Sonic Repair Manual: Brake System External Leak Inspection
Warning:
Refer to Brake Fluid Irritant Warning.
Caution:
Refer to Brake Fluid Effects on Paint and Electrical Components Caution.
- In order to inspect for external brake fluid leaks, first inspect the fluid
level in the master cylinder.
While a slight brake fluid level drop can be considered a normal condition due to brake lining wear, a very low level may indicate a brake fluid leak in the hydraulic system.
- If the fluid level is abnormally low, adjust the brake fluid level. Refer to Master Cylinder Reservoir Filling.
- Start the engine and allow it to idle.
- Apply constant, moderate foot pressure to the brake pedal.
If the brake pedal gradually falls away while under foot pressure, there may be a brake fluid leak.
- Turn the ignition OFF.
- Visually inspect the following brake system components for brake fluid leaks, excessive corrosion, and damage. Give particular attention to all brake pipe and flexible hose connections to ensure that there are not any slight brake fluid leaks – even though the brake pedal may feel firm and hold steady:
- Master cylinder brake pipe fittings
- All brake pipe connections
- Brake pipes
- Brake hoses and connections
- Brake calipers and/or wheel cylinders
Brake Pressure Modulator Valve Replacement
Removal Procedure
Warning: Refer to Brake Fluid Irritant Warning.
Caution: Refer to Brake Fluid Effects on Paint and Electrical
Components Caution.
Caution: Always ...
Brake System Warning Light
The vehicle brake system consists of two hydraulic circuits. If one circuit is
not working, the remaining circuit can still work to stop the vehicle. For normal
braking performance, both circuits ...
Other materials:
Cruise Control
: Press to turn the cruise control
system on and off.
RES/+: Move the thumbwheel up briefly to make the vehicle resume to a previously
set speed or hold upwards to accelerate. If cruise control is already active, use
to increase vehicle speed.
SET/−: Move the thumbwheel down briefly ...
Selecting the Right Engine Oil
Selecting the right engine oil depends on both the proper oil specification and
viscosity grade. See Recommended Fluids and Lubricants.
Specification
Use and ask for licensed engine oils with the dexos1® approved certification
mark. Engine oils meeting the requirements for the vehicle should ...
Engine Front Cover with Oil Pump Replacement
Removal Procedure
Disconnect the battery negative cable. Refer to Battery Negative Cable
Disconnection and Connection.
Set the engine to TDC. Refer to Camshaft Timing Chain Inspection.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
Remove ...
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