Mechanics

HI MY CHEVY SS 454 BRAKE LIGHT PROBLEM

1990 Chevrolet Truck • 56,000 miles

Bake light in dash is on and pedal goes to the floor. Checked e-brake light gets brighter when depressed. Brake switch is adjusted. Figured it was master cylinder changed master cylinder and brake booster (wanted chrome one) still have the same problem. I have a good pedal when truck is off when it's running pedal goes to the floor. I am open to any sugestions that might be a fix to this problem. Thank You
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Ron's ss454
February 19, 2012.



Check the brake system if its leaking externally-no leak -check brake shoes adjustment if okay-recheck the master cylinder could be leaking internally

Rasmataz
Feb 19, 2012.