I'm having issues with the brakes having a Hard Brake Pedal while baking up. I have read every thread I could find about this subject and as a a result changed out my vacuum pump, brake vacuum lines, replaced the crank shaft seal and did the PVC upgrade. I was also having issues with a hard brake pedal when coming off cruse control climbing hills at 70mph. Now at least I have improved the vacuum situation that is no longer a problem. However the hard brake pedal while backing persist. Can someone provide a link to any discussion that would lead me to more troubleshooting this issue? Thanks in advance.
Hard Brake Pedal while baking up
- Thread starter dsatwork
- Start date
ozonetrooper
Member
I have a 2016 ltz turbo and do not have the issue so I can only reply to what I consider hard braking by the computer when I take my foot off of the gas pedal slowing for a stop light.
It brakes really hard.
You are aware the parking brake and rear brakes are shoes not disks ?
Maybe you have a shoe dragging or some other issue with the brake itself ? (weak springs, uneven wear, etc)
It brakes really hard.
You are aware the parking brake and rear brakes are shoes not disks ?
Maybe you have a shoe dragging or some other issue with the brake itself ? (weak springs, uneven wear, etc)
Hard brake pedal issue has been resolved. I believe my issue was the brake booster vacuum pump all along. Initially it likely seized and then it likely blew the fuse, which I apparently did not test either before or after I removed and replaced the brake booster vacuum pump. To my defense I was chasing a myriad of vacuum leaks and figured until I got them all fixed, I would continue to have issues. Also on the 2015 Sonic LTZ 1.4 turbo the fuse is number the number 8 EVP jcase 20amp fuse, not the number 25 that is posted all over the internet.
