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
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Other materials:
Tire Pressure Light
For vehicles with the Tire Pressure Monitor System (TPMS), this light comes on
briefly when the engine is started. It provides information about tire pressures
and the TPMS.
When the Light Is On Steady
This indicates that one or more of the tires are significantly underinflated.
Stop as soo ...
Storing a Flat or Spare Tire and Tools
Warning
Storing a jack, a tire, or other equipment in the passenger compartment of
the vehicle could cause injury. In a sudden stop or collision, loose equipment could
strike someone. Store all these in the proper place.
Storing the Flat Tire and Tools
1. Return the jack and tools to their or ...
Drive Range, Fifth Gear Default (Gen 2)
If the transmission encounters an electrical component malfunction, the transmission
will default to Fourth gear. All solenoids will default to their normal state. If
the torque converter clutch is applied, it will release. The transmission will remain
in Drive Range?Fourth Gear Default until ...
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