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.
Warning:
Refer to Brake Dust Warning.
- Ensure the park brake lever is in the fully released position.
- Remove the front floor console cupholder insert.
Note:
Use ONLY HAND TOOLS when loosening or tightening the adjusting
nut.
- 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.
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 ...
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:
Drunk Driving
Death and injury associated with drinking and driving is a global tragedy.
Warning
Drinking and then driving is very dangerous. Your reflexes, perceptions, attentiveness,
and judgment can be affected by even a small amount of alcohol. You can have a serious
— or even fatal — collision if y ...
Wireless Communication Interface Antenna Replacement
Wireless Communication Interface Antenna Replacement
Callout
Component Name
Preliminary Procedure
Remove the communication interface module. Refer to
Communication Interface Module Replacement
1
...
Engine Oil Pressure Indicator Switch Replacement
Engine Oil Pressure Indicator Switch Replacement
Callout
Component Name
Preliminary Procedure
Remove the air conditioning compressor. Refer to
Air Conditioning Compressor Replacement.
1
Oil Pr ...
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