Three problems related to brake master cylinder have been reported for the 2004 Chevrolet Suburban. The most recently reported issues are listed below.
Driving as normal attempt to stop and pedal went to the floor. No brakes. Coasted to stop luckily not traveling at high speed. Inspection revealed rusted through brake lines. And all fluid gone from master cylinder.
The master cylinder and brake line caused a complete brake failure. All the brake lines are severely rusted, compromised, and all must be replaced. Fortunately the failure happened in a restaurant drive through. Moments before pulling into the drive through, I was driving my daughter on a busy roadway with a 50 mph speed limit. I do not feel brake lines should be made of materials that can corrode and fail without any warning whatsoever. The truck is very well maintained. With non-corrosive metals available for brake tubing it is inexcusable from a safety perspective. The government needs to address this to prevent clearly foreseeable injuries and deaths.
No incidents known. Master brake cylinder leaks. Vehicle only has 46,000 miles. I do not tow trailers, carry heavy loads, or apply heavy brake pressure when stopping. Appears to be an obvious defect in the master cylinder. Could cause accident or injury if not investigated and corrected.