Right Rear Brakes Locking Up - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
Suspension/Wheels/Brakes/Tires Talk about Chevy Cobalt Suspension, Brakes, Wheels, and Tires here
Sponsored by:

LinkBack Thread Tools Display Modes
post #1 of 1 (permalink) Old 09-09-2016, 04:12 PM Thread Starter
Join Date: May 2012
Location: 92563 (So Cal)
Posts: 17
Right Rear Brakes Locking Up

My son has been having an intermittent issue for the last several months with the right rear brakes locking up. At first, he thought it was the proportioning valve and we replaced it (see THIS THREAD).

This seemed to fix the problem, but a few days ago it started doing it again. At that time we replaced the proportioning valve, the two rear wheel cylinders and the two rubber brake hoses. We also blead the fronts AND the rears. We did NOT replace the brake hardware or the drums.

The symptoms are:

1. On light braking the rear end "tucks" (lowers), but both rear brakes seem to work. (No "pulling" from the front or the rear. Stays nice and true)
2. On medium braking the right rear locks up but the left rear is still spinning. Interesting enough; even though the right rear is locked up, there's still no "pulling" from the front or the rear of the car!
3. On hard braking both rears lock up. Again, no "pulling" to the left or the right. The fronts lock up too, but you really have to brake hard.

When we replaced the rear brakes, we also replaced the front calipers, both rubber brake hoses and the pads. The only major parts that HAVEN'T been replaced is what's mentioned above (the rear brake hardware and the drums), the master cylinder, the hard lines and the parking brake hardware.

We're really at a loss here, so if anyone has seen this before, or has any ideas on what it could be, we'd love to hear from you.

restoman1 is offline  
Sponsored Links
Closed Thread

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome