Chevrolet Sonic Repair Manual: Brake Rotor Assembled Lateral Runout Correction
Note:
- Brake rotor thickness variation MUST be checked BEFORE checking for assembled lateral runout (LRO). Thickness variation exceeding the maximum acceptable level can cause brake pulsation. Refer to Brake Rotor Thickness Variation Measurement.
- Brake rotor assembled lateral runout (LRO) exceeding the maximum allowable specification can cause thickness variation to develop in the brake rotor over time, usually between 4,800–11,300 km (3,000–7,000 mi). Refer to Brake Rotor Assembled Lateral Runout Measurement.
Review the following acceptable methods for bringing the brake disc assembled LRO to within specifications. Determine which method to use for the vehicle being repaired.
- The indexing method of correcting assembled LRO is most effective when the LRO specification is only exceeded by a relatively small amount: 0.025–0.127 mm (0.001–0.005 in). Indexing is used to achieve the best possible match of high spots to low spots between related components. Refer to Brake Rotor Assembled Lateral Runout Correction - Indexing.
- The on-vehicle brake lathe method is used to bring the LRO to within specifications through compensating for LRO while refinishing the brake rotor. Refer to Brake Rotor Assembled Lateral Runout Correction - On Vehicle Lathe.
If the assembled LRO cannot be corrected using these methods, then other components must be suspected as causing and/or contributing to the LRO concern.
Brake Rotors
...
Brake Rotor Assembled Lateral Runout Correction - Indexing
Special Tools
CH-45101-100 Conical Brake Rotor Washers
For equivalent regional tools, refer to Special Tools.
Warning: Refer to Brake Dust Warning.
Note:
Brake ro ...
Other materials:
Safety Function Override
If the battery on the vehicle has been recharged or disconnected, or is not working,
the windows will need to be reprogrammed for the express-up feature to work. Before
reprogramming, replace or recharge the vehicle's battery.
To program the driver window:
1. With the ignition in ACC/ ACCE ...
Remote Keyless Entry (RKE) System Operation
The RKE transmitter may work up to 60?€‰m (195?€‰ft) away from the vehicle.
Other conditions can affect the performance of the transmitter. See Remote Keyless
Entry (RKE) System.
RKE without Remote Start Shown
The following buttons are on the transmitter:
Q ...
Heated Oxygen Sensor Replacement - Sensor 2
Heated Oxygen Sensor Replacement - Sensor 2
Callout
Component Name
1
Heated Oxygen Sensor 2
Warning: In order to avoid being burned, do not service the
exhaust system while it is still hot. Service the ...
0.0053