The vehicle brake system consists of two hydraulic circuits. If one circuit is not working, the remaining circuit can still work to stop the vehicle. For normal braking performance, both circuits need to be working
If the warning light comes on, there is a brake problem. Have the brake system inspected right away.
Warning
The brake system might not be working properly if the brake system warning light is on. Driving with the brake system warning light on can lead to a crash. If the light is still on after the vehicle has been pulled off the road and carefully stopped, have the vehicle towed for service.

This light should come on briefly when the ignition is turned to ON. If it does not come on then, have it fixed so it will be ready to warn if there is a problem.
When the ignition is on, the brake system warning light will also come on when the parking brake is set. The light will stay on if the parking brake does not fully release. If it stays on after the parking brake is fully released, it means there is a brake problem.
If the light comes on while driving, carefully pull off the road and stop. The pedal may be harder to push or may go closer to the floor. It may take longer to stop. If the light is still on, have the vehicle towed for service. See Towing the Vehicle.
Service Vehicle Soon Light
Antilock Brake System (ABS) Warning LightDriving with the Blind Spot Mirror
Actual Mirror View
1. When the approaching vehicle is a long distance away, the image in the main
mirror is small and near the inboard edge of the mirror.
2. As the vehicle gets closer, the image in the main mirror gets larger and moves
outboard.
3. As the vehicle enters the blind zone, the ...
Eliminating Unwanted Odors in Vehicles
GM Vehicle Care Odor Eliminator, Refer to Adhesives, Fluids, Lubricants, and
Sealers, may control or eliminate odors in the interior and luggage compartment
areas of GM vehicles. This non-toxic, biodegradable, odorless product has been shown
to greatly reduce or remove the following types of o ...
Automatic Transmission Flex Plate Replacement
Automatic Transmission Flex Plate Replacement
Callout
Component Name
Preliminary Procedure
Remove the transmission. Refer to Transmission
Replacement.
Special Tools
EN-470-B Angular Torque Wrench
EN-49979 Crank ...