Chevrolet Sonic Owner's Manual: Brake Assist
This vehicle has a brake assist feature designed to assist the driver in stopping or decreasing vehicle speed in emergency driving conditions. This feature automatically uses the stability system hydraulic brake control module to supplement the power brake system under conditions where the driver has quickly and forcefully applied the brake pedal in an attempt to quickly stop or slow down the vehicle. The stability system hydraulic brake control module increases brake pressure at each corner of the vehicle until the ABS activates. Minor brake pedal pulsation or pedal movement during this time is normal and the driver should continue to apply the brake pedal as the driving situation dictates. The brake assist feature will automatically disengage when the brake pedal is released or brake pedal pressure is quickly decreased.
Parking Brake
To set the parking brake, hold the brake pedal down and pull up on the parking
brake lever. If the ignition is on, the brake system warning light will come on.
See Brake System Warning Light.
T ...
Hill Start Assist (HSA)
This vehicle has an HSA feature, which may be useful when the vehicle is stopped
on a grade. This feature is designed to prevent the vehicle from rolling, either
forward or rearward, during vehicl ...
Other materials:
Liftgate Window Replacement
Special Tools
BO-24402-A Glass Sealant Remover (Cold Knife)
BO-39032 Stationary Glass Removal Tool
Use an adhesive that is approved by GM
For equivalent regional tools, refer to Special Tools
Removal Procedure
Warning: Refer to Cracked Window Warning.
Note ...
Brake Pressure Modulator Valve Bracket Replacement
Removal Procedure
Remove the brake pressure modulator valve (BPMV) and bracket assembly.
Refer to Brake Pressure Modulator Valve Replacement.
Remove the BPMV bolts (1).
Remove the BPMV bracket.
Installation Procedure
Install the BPMV br ...
Lead/Pull Description
At a constant highway speed on a typical straight road, lead/pull is the amount
of effort required at the steering wheel to maintain the vehicle's straight path.
Important: Vehicles will tend to lead/pull in the direction of the
road slope as part of normal operation.
Lead/pull is ...
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