Brake pedal goes to the floor by itself when i start the engine
Thread Starter
CF Beginner
Joined: Dec 2017
Posts: 1
Likes: 0
Brake pedal goes to the floor by itself when i start the engine
hi There i’ve got a 04 avalanche and when i start the truck the brake pedal goes to the floor by itself and the brake is on so i cant do nothing and when i stop the truck the brake pedal come back . Does anyone have a idea of what he can be. Thx!
CF Monarch
Joined: Oct 2017
Posts: 4,605
Likes: 269
From: USA
Likely air in the system. Could be a bad master cylinder as well.