Spongy GMC Safari Brakes Need Expert Diagnosis

After experiencing similar symptoms on my 2000 GMC Savana, it turned out to be a combination of worn brake rotors and low brake fluid. The pulsating brake pedal is typically a clear sign of warped brake rotors, while the spongy feel often indicates air in the brake lines or low brake fluid levels. In my case, the brake rotors showed significant wear patterns and required replacement. The brake pads were also worn unevenly, which was contributing to the pulsating sensation. During inspection, the brake fluid was found to be below minimum levels and had absorbed moisture over time. The complete repair involved: Replacing both front brake rotors, Installing new brake pads, Performing a full brake fluid flush, Bleeding the brake system to remove air This was a serious safety issue that required immediate attention. Neglecting these symptoms could lead to brake failure, especially during emergency braking situations. The brake system is not something to compromise on. A proper inspection should check: Brake fluid condition and level, Brake rotor thickness and surface condition, Brake pad wear, All brake line connections for leaks

Thanks for sharing your experience. The brake system issues you described match what I dealt with on my Safari. The spongy brake pedal and pulsation were exactly what led me to discover warped rotors and a leak in one of the brake calipers. Getting the entire hydraulic brake system checked definitely solved the problems. Did your repair bill include replacing the brake fluid and bleeding the lines? Curious how much the total service cost you since I might need similar work done soon. Also wondering if the metal brakes have given you any more trouble since the repairs were completed?

Good news about your Safari's brake concerns. Since having my GMC serviced, the brake system has performed flawlessly with no more spongy pedal feel or pulsating. All the hydraulic brakes are working as they should, and the brake fluid levels have remained stable. The total repair cost breakdown included: Complete brake fluid flush and bleeding, New brake rotors, Fresh brake pads, Labor for system inspection, Fixing an unexpected undervoltage issue The final bill came to 240 Euro for everything. Initially went in just for the squeaky brakes, but addressing the electrical problem was necessary too. The investment was worth it for safety and peace of mind. There have been zero brake-related issues since the service. The pedal feels firm, and the braking is smooth without any vibration. This kind of maintenance really helps prevent more serious problems down the road. Would definitely recommend getting a full system inspection done, especially with the symptoms you described.

Thanks to everyone who shared their advice. I finally took my Safari to a new mechanic last week. The diagnosis confirmed exactly what was discussed here, warped rotors and a minor leak in the brake system. The brake fluid was also contaminated and needed a complete flush. The repair included new disc brakes, fresh brake fluid, and a thorough system bleeding. Total cost was 280 Euro, which seemed fair given all the work done. The brake pedal now feels solid with no more spongy action or pulsating. The squeaky brakes are also gone completely. Much better experience with this shop compared to my last mechanic. They showed me the worn brake shoes and explained everything clearly. Really glad I got a second opinion instead of going back to the previous place. The van stops perfectly now and I feel much safer driving it.