Chevrolet Sonic Repair Manual: Brake Rotor Thickness Measurement
Warning:
Refer to Brake Dust Warning.
- If the inboard friction surface of the brake rotor is not accessible, reposition and support the caliper with the brake pads. Refer to Front Disc Brake Pads Replacement.
- Clean the friction surfaces of the brake rotor with denatured alcohol, or an equivalent approved brake cleaner.
- Using a micrometer (1) calibrated in thousandths-of-a-millimeter, or ten-thousandths-of-an-inch,
measure and record the thickness of the brake rotor at four or more points,
evenly spaced around the brake rotor.
Make sure that the measurements are only taken within the friction surfaces and that the micrometer is positioned the same distance from the outer edge of the brake rotor, about 13 mm (1/2 in), for each measurement.
- Compare the lowest thickness measurement recorded to the specifications. Refer to Disc Brake Component Specifications.
- If the lowest thickness measurement of the brake rotor is above the minimum allowable thickness after refinishing specification, the brake rotor may be able to be refinished, depending upon surface and wear conditions which may be present.
- If the lowest thickness measurement of the brake rotor is at or below the discard thickness specification, the brake rotor requires replacement.
Brake Rotor Surface and Wear Inspection
Warning: Refer to Brake Dust Warning.
If the inboard friction surface of the brake rotor is not accessible, reposition
and support the caliper with the brake pads. Refer to Front Disc Bra ...
Brake Rotor Thickness Variation Measurement
Warning: Refer to Brake Dust Warning.
Note: Any disc brake rotor that exhibits thickness variation exceeding
the maximum acceptable level must be refinished or replaced. Thickness variati ...
Other materials:
Personalization Menu (Radio with Touchscreen)
Settings can be made with the ignition ON and the vehicle not moving.
Use the audio system controls to access the personalization menus for customizing
vehicle features.
The following are all possible personalization features. Depending on the vehicle,
some may not be available.
(Home): Pres ...
Power Door Locks Description and Operation
Door Lock System Components
The power door lock system consists of the following components:
Driver door lock switch
Child door lockout switch
Door lock actuators in each of the doors
Body control module (BCM)
Underhood fuse block (Contains door lock PCB relay)
...
Repairs and Inspections Required After a Collision
Accident With or Without Air Bag Deployment ?€“ Component Inspections
Warning: Proper operation of the Supplemental Inflatable Restraint
(SIR) sensing system requires that any repairs to the vehicle structure
return the vehicle structure to the original production configur ...
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