Chevrolet Sonic Repair Manual: Drum Brake Adjustment
Special Tools
CH-21177-A Drum to Brake Shoe Clearance Gauge
For equivalent regional tools, refer to Special Tools.
- Ensure the park brake lever is in the fully released position.
- Remove the front floor console cupholder insert.
- Using ONLY HAND TOOLS, loosen the adjusting nut (1) completely to the end of the front cable threaded rod.
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
- Remove the rear tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation.
- Remove the brake drums. Refer to Brake Drum Replacement.
- Position the CH-21177-A Drum to Brake Shoe Clearance Gauge to the widest point of the brake drum inside diameter.
- Firmly hand tighten the set screw on the CH-21177-A Drum to Brake Shoe Clearance Gauge .
- Remove the CH-21177-A Drum to Brake Shoe Clearance Gauge from the brake drum and position it over the corresponding brake shoe assembly at its widest point.
- While holding the CH-21177-A Drum to Brake Shoe Clearance Gauge in position, insert a proper feeler gauge between one side of the CH-21177-A Drum to Brake Shoe Clearance Gauge , and the corresponding brake shoe lining.
- Rotate the brake shoe adjuster screw until the brake shoe linings contact the CH-21177-A Drum to Brake Shoe Clearance Gauge and the feeler gauge. Refer to Drum Brake Component Specifications.
- Repeat the above steps for the opposite brake drum and brake shoe assembly.
- Install the brake drums. Refer to Brake Drum Replacement.
- Adjust the park brake. Refer to Parking Brake Adjustment.
- Install the rear tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation.
- Lower the vehicle.
- Install the front floor console cupholder insert.
Warning:
Refer to Brake Dust Warning.
Note:
Use ONLY HAND TOOLS when loosening or tightening the adjusting nut.
Drum Brake Adjusting Hardware Replacement (J93, J94)
Removal Procedure
Warning: Refer to Brake Dust Warning.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
Remove the tire and wheel assembly. Re ...
Drum Brake Hardware Inspection
Warning: Refer to Brake Dust Warning.
Visually inspect the drum brake upper return spring (1) for the following
conditions:
Excessive corrosion
Excessive stretchin ...
Other materials:
Maintenance
Air Intake
Clear away any ice, snow, or leaves from the air intake at the base of the windshield
that can block the flow of air into the vehicle.
Passenger Compartment Air Filter
The filter removes dust, pollen, and other airborne irritants from outside air
that is pulled into the vehicle.
T ...
How the System Works
The LDW camera sensor is on the windshield ahead of the rearview mirror.
To turn LDW on and off, press the LANE DEPART button on the steering wheel. The
control indicator will light when LDW is on.
When the vehicle is started, the LDW indicator on top of the instrument panel
to the right o ...
Rear Seat Back Bolster Replacement
Rear Seat Back Bolster Replacement
Callout
Component Name
Preliminary Procedures
Disable the SIR system. Refer to SIR Disabling and Enabling
1
Rear Seat Back Cushion Bolster
Warning: Refer t ...
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