Question about 2005 Chevrolet Cobalt

2 Answers

Car sat for 2 months with parking brake on

Now the right rear brake is stuck on and will not unlock. How do I fix it?

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  • matthewota Aug 23, 2008

    The Cobalt has front disk brakes and rear drum brakes.
    The right rear drum brake will not release when the parking brake is released.

  • Coss May 11, 2010

    Drum brakes or Disk brakes?

    The Cobalts came with rear disk as an option.

    Depending on the brake style, changes the answer.


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Go in through the adjust hole on the backing plate, and back off the adjustment on the brakes as far as you can get it to go. This is a little tricky, because it has a level that tries to stop this. You can sometimes click it past, or you might need to use a long skinny screwdriver to move the locking lever back.
Once you have that backed off, put the wheel back on, and try rocking the car front to rear (a couple of feet in each direction should do it). Do this on a solid surface, not gravel or dirt.
Take the wheel back off, and using a metal hammer, tap on the drum (more then a light tap, but not like driving nails, you'll shatter the drum) you can hit harder on the outside corner. Repeat this procedure a few times. Then try removing the drum.
If this still doesn't work, you can try locating where the anchor pins come through the backing plate. These are the 2 little pins that hold the brake shoes in place. They look like nails with a flattened end if you hold them in your hand. Using a cutting tool, like a small grinder, cut off the flattened ends that stick through the backing plate. You will have to replace them once you finally get the drum off. Reapeat the procedure mentioned above.

You are probably going to have to have the drum turned and replace the shoes once you do get it free.

Let us know how this goes.

Posted on Aug 23, 2008

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If you have steel wheels I would remove the plastic hub cap and hit the wheel close to the center without hitting the lugs with a sledge hamer a few times to release the rusted bond.You may want to try to grab the parking brake cable near the wheel and move it around first to posibly loosen a frozen or stiff cable.

Posted on Aug 23, 2008

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