What is your question?
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What is your question?
Bought it new. At 15,000 mi front rotors warped. GM turned them. Now at 30,000 mi they are warped again. Rear are fine. What is the problem? Is anyone else having this issue. I have 20" tires.
2 Replies
rotors warp from overheating. the fact that you altered the wheel size adds to the problem. it is not a fault of the car. take it easier on the brakes and pump them when long stops are involved instead of staying on them building up a ton of heat. Roy
WHen you have your GM brakes done, have them grease the caliper slides. If the calipers do not release properly, they can rub the rotors the entire time your are driving causing overheating and warping. replace the warped rotors and have the caliper slides all greased...front and rear.
I didn't change the wheel size. When odered it I tried getting smaller wheels GM would't let me. I don't ride the brakes. Normaly I let the auto decelerate before applying the brakes. We do very little driving on the hills & mountains, and live in a flat area. I will use your suggestion of pumping the brakes. I have never had to replace rotors in any auto I have ever owned. I have been driving 33 years. When I first got the auto I probably did ride the brakes until I was used to it, but after that it shouldn't of happened again. GM covered the work the first time this happened. I haven't taken it in yet this time because I wanted some feed back before I contacted them.
ok. if they are factory, then thats another issue. you need to look hard at the rears. the front may be doing more work than they are supposed to. make sure the rears are working correctly. in cases like this, rear caliper pins could be frozen not allowing the rear pads to do the work required of them. Roy