Chevrolet Sonic Repair Manual: Brake Pedal Travel Measurement and Inspection
Special Tools
CH-28662 Brake Pedal Effort Gauge
For equivalent regional tools, refer to Special Tools.
- With the ignition OFF and the brakes cool, apply the brakes 3–5 times, or until the brake pedal becomes firm, in order to deplete the brake booster power reserve.
- Install the CH-28662 gauge (1), or equivalent, to the brake pedal (3).
- Measure and record the distance (a) from the brake pedal (3) to the rim of the steering wheel (2). Note the points of measurement.
- Apply and maintain a force of 445 N (100 lb) to the brake pedal, as indicated on the CH-28662 gauge (1), or equivalent.
- While maintaining 445 N (100 lb) of force to the brake pedal (3), measure and record the distance (b) from the same point on the brake pedal (3) to the same point on the rim of the steering wheel (2).
- Release the brake pedal (3) and repeat steps 4 and 5 to obtain a second measurement. After obtaining a second measurement, proceed to step 7.
- Average the first and second measurements recorded for the 2 applies of the brakes.
- Subtract the initial unapplied distance (a), from the average applied distance (b)
to obtain the brake pedal travel measurement (c).
Specification
Maximum brake pedal travel – measured with the ignition OFF, brake booster power assist depleted, and the brakes cool.
Brake Pedal Pushrod Inspection
Disconnect the brake pedal pushrod (2) from the brake pedal.
Reposition the pedal pushrod boot (1) toward the front of the vehicle to
expose as much of the pedal pushrodR ...
Parking Brake
...
Other materials:
Rear Window Wiper Arm Replacement
Rear Window Wiper Arm Replacement
Callout
Component Name
Preliminary Procedure
Using a small flat-bladed tool, release the locking tabs and lift the
end of the wiper arm nut cover in order to access and remove the rear wipe ...
Fuel Pressure Sensor Replacement
Fuel Pressure Sensor Replacement
Callout
Component Name
Preliminary Procedure
Relieve the fuel system pressure. Refer to
Fuel Pressure Relief.
Remove the air cleaner assembly. Refer to
Air Cleaner Assembly Replacement. ...
Reverse (Gen 1)
When the gear selector lever is moved to the Reverse (R) position (from the Park
position) the normally-high 35R pressure control solenoid 2 is commanded ON and
the following changes occur in the transmission? hydraulic and electrical systems:
3-5-Reverse Clutch Applies
Manual Valv ...
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