Question about 2002 GMC Sierra 2500HD

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Rear brake pads wear out every 30000 miles on 2002 3/4 tod hd , rotors are pitted bad

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That's to be expected and is completely normal.

Rear brake shoes as fitted to drum brakes can typically last up to 60k miles with periodic adjustments, but you have rear disc brakes and the shoes will typically last half of that.

Also, modern brake pads no longer contain asbestos and are now made using harder metallic compounds; the direct result is that brake discs (US=rotors) are also considered to be consumable items as they are worn down by the harder pads. It's not unusual to have to replace front discs every other pad change and rear ones with every pad change; in both cases the mileage will typically be around 30k miles on most models.

Posted on Nov 15, 2009

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This is a very common problem with GM vehicles that have raer disc brakes it is called rotor delamination replace rear rotors and pads and check calipers are sliding correctly.

Posted on Nov 15, 2009

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Replace the rotors with good quality ones (not cheap ones), and put lifetime pads on it

Posted on Nov 15, 2009

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I have to continuously replace calipers on my jeep, what is the problem?


wonder if the rotors are too slim. If this happens the brakes get too hot as the rotor radiates away the heat. If too hot the brakes could wear out faster.

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My mechanic tells me I need rear brake pads and rotors as a cost of $ 320.00. I have 60000 miles on the car. I can't believe I need brakes so soon with low mileage.


The way in which a car has driven has a very direct impact on how long brake pads will last before they have to be replaced. For example, if you spend most of your time driving long distances on the highway, you're using your brakes much less often than in stop and go urban driving. I have seen cars that need brake jobs every 75,000 miles; I've seen similar cars, with different drivers and different driving routines, go 25,000 miles between brake jobs.

I would not be surprised at all if the front brake pads (and possibly rotors) of your Accord needed to be replaced at 60k miles of typical mixed driving. I am, however, somewhat surprised that your rear brakes need service at this point. The front brakes of a car typically provide much more of a car's stopping power than the rear brakes (it's a physics thing), and so they generally wear much more quickly than the rear brakes. All that said, I recently had to replace the rear brake pads and rotors of a 2002 Passat that had only 51,000 miles on the odometer. This car's pads were worn down to the metal, and one of the rotors was badly scored. Upon speaking with the owner of the car, though, things made slightly more sense. First, the car was equipped with a very active ABS braking system, which decreases front wheel braking and increases rear wheel braking depending on road conditions. As a result, the rear brakes of that car were used much more heavily than in the "average" car. Second, and more obviously, the owner admitted to forgetting to release her parking brake several times before driving off, sometimes going several miles before realizing her mistake. The emergency brake system on most cars engages the rear brakes, and driving off with those brakes still on will put a huge amount of wear on those pads in a very short distance.

One final, distant, thought is that it's possible that your rear calipers have gotten "sticky" and are not fully releasing after they have been engaged. Accumulated moisture on the brake pistons and piston channel walls can leave rust spots that hang up piston travel, leading to this condition. At the same time, it would be unusual for both brakes on the same axle to develop this problem at the same time--this typically happens one brake caliper at a time, and you notice the condition when you car begins pulling to one side when you brake or even after you release your brakes.

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With just over 50,000 miles on my 2008 Jeep Wrangler (mostly all highway) Both of my rear pads and rotors need to be replaced.. Does anyone know if this is normal? My front pads and rotors are...


The front brakes are good at 30000 mile intervals ,because they do most of the stopping power. 50 to 60000 miles is about normal on the rear brakes. The most common ailment with rear brakes is the emergency brake not releasing. The cables for the emergency brake run under the jeep ,along the frame and rust keeps them from releasing

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The brake pads are well within a good long life. Brake wear life depends on a number of factors, the most significant is the driver. Most people feel that they are easy on brakes and that is usually not true...

Rotors are damaged by: normal wear; waiting too long for pads and damage from metal to metal contact; and HEAT. Heat damages rotors and causes them to warp. Cars now days have less material on the rotors and therefore they have shorter life.

On some vehicles it is only slightly more to replace rotors, versus resurfacing them. A resurfaced rotor has less material, so warping happens faster.....Some shops just routinely replace rotors, rather than resurface for just this reason.

Other shops routinely replace calipers, which can be agrued either way, but a caliper that hangs slightly will cause rotor warp. My preference is to replace calipers when they need it, by leaking or binding....

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I have a 2002 Nissan Quest and the rear brakes are making grinding and squeaking noises while braking. The rear brakes were replaced a month ago and since then it's been making those noises. I have read...


Make sure the rotors (the disks that the tire rim are mounted on), are smooth. If they are rough, then they are wearing your break pads down. Even if the break pads are new, bad rotors will grind them down. Change the rotors...

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325 ci brake rotors have been replaced 4 times in 6 years


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