Question about 2006 Pontiac G5

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Brake Shoe Self-Over-Tightening?

I have a 2005 Pontiac Pursuit (identical to the G5) and am having trouble with the rear passenger drum brake. The brake squeals when driving slowly and if the parking brake is gently applied, the noise goes away. I had it in the shop and they put new brake shoes on and adjusting everything. I didn't have any problems for a few days, then the squeal came back.

So.... I took it back again and they replace the shoes again (stating that they were defective and under warranty) and adjusted everything.

Again, the car worked great for about 4 days and then yesterday the brake is screaming again.

It's almost like the brake is over-self-tightening over time?

Any ideas on what might cause this and suggestions on getting it fixed?


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  • Anonymous Jan 11, 2010

    Thanks for the post but what I failed to mention is that along with the noise, the brake will throw an incredible amount of heat (and smell). This gets worse with time to the point that I have to rev up the motor just to get it to a garage.



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Type of brake shoes there using, the more metallic compound on the shoe will make them Squeal and just takes time for the brake shoes and drums to wear there self to a point where they will not squeal any more. The high Metallic brake shoes will last longer but make more noise, I did a break up grade on my Jimmy with ceramic brake pads and vented rotors. At first before there were broken in, stopping distance was bad and brakes was loud, but now it's like dropping an anchor LOL. Keep me posted and give it a few miles of stop and go traffic.

Posted on Jan 11, 2010

  • Harvey N Tawatao
    Harvey N Tawatao Jan 11, 2010

    Have had the same problem on several GM cars that had rear shoes. Wheel
    cylinders can cause this and should be changed first. It is not all
    that expensive if you can do it yourself or have a friend who can help.
    Moisture can collect in the cylinders and make them stick. The other
    thing I have done to remedy the problem is to turn the drums and then
    grind the shoes to fit the drum. Many shops don't do this and assume it
    will "wear in". Lets say that you have a rear drum after it is turned
    that is 11.025 inches. The shoes need to be ground for a circle of
    11.025 inches to achieve full contact. Any really good brake shop would
    follow these procedures anyway, but finding such a shop is sometimes a
    challenge. They do exist though. The other thing also is to check the parking brake cable for being out of adjustment or binding causing the brakes to sick. I would start first with the simple and jack up the rear wheels off the ground, make sure you have the front wheels chalked to make sure the car does not move. You can jack up the rear wheels off the ground one of a time and inspect the way the wheels rotate with the parking brakes off. You should not feel any resistance at all when spinning the wheel, if you do. Inspect the parking brake cable and move it around and see if the wheel will spin easier. If it does, then your parking brake cables need to be adjusted. You need to do this to both sides cause the parking brakes work on separate cables from the back and one cable from the front of the car. The parking brake cable adjustment can be made at the hand brake. Not sure on your G5 but i think it's a 10 mm bolt and your going to need a deep socket to adjust the cable. Your going to need to remove the plastic panel around the hand brake to get to the parking brake cable connected to the hand brake, Just back it off a few turns, but to much that you don't have any parking brakes. Good luck and be safe friend. Start with the simple and inspecting the parking brakes.



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