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Old December 2nd, 2009, 07:46 PM   #1
07mcgeathy
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Default BRAKES keep warping

i have a 98 1/2 ton chevy ext cab short box 4x4 all stock with 265, my problem is that the front rotors keep warping every 6000 to 8000 miles. i dont stop hard or pull trailers offten, and have good quality pads and rotors already. any one know what i should do? would it be worth spending alot of money on break parts like drilled and slotted rotors. i do know these trucks are known for this problem, so theres gotta be a solition. thanks for any advice.
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Old December 2nd, 2009, 07:48 PM   #2
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are the calipers hanging up at all causing the rotors to get hot? all i can think of
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Old December 2nd, 2009, 07:58 PM   #3
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Are you torquing the lugnuts to 100 ft/lbs ( may be 120 for the trucks, not sure) I know chrysler had a bulletin about rotors warping due to uneven torquing of lugnuts. The alloy wheels would distort and cause uneven pressure on the rotor causing it warp. Also on the Chevy trucks I may actually be your rear drums that are warping or going out of round. My buddy had it happen on his 97. After a couple trips to the dealership and about 3 sets of pads and rotors on the front it was determined the rear drums were the culprit, repaced them and the shoes, problem solved.

I hope this helps
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Old December 2nd, 2009, 07:59 PM   #4
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Quote:
Originally Posted by special k View Post
are the calipers hanging up at all causing the rotors to get hot? all i can think of
I agree there is another problem, I have owned 5 of those trucks and personally put between 100-150k miles on each one and never warped a rotor.

Is one side getting hotter during normal driving?

My Jeep had an issue with the rubber lines swelling that caused the calipers to not release.

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Old December 2nd, 2009, 08:00 PM   #5
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improperly torqued lug nuts can cause warping problems sometimes
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Old December 2nd, 2009, 08:01 PM   #6
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oops someone got to it before me :)
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Old December 2nd, 2009, 08:02 PM   #7
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i'll agree with the lugnut torquing also. i know the 97-08 f150's were notorious for warping rotors due to over-torqued lug nuts.
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Old December 2nd, 2009, 08:03 PM   #8
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Quote:
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oops someone got to it before me :)
It's all good, some people don't read big paragraphs from a possible know it all
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Old December 2nd, 2009, 08:06 PM   #9
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How are the rear brakes? I tend to wonder if the caliper slides locked up if they are discs and are forcing the fronts to work harder?
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Old December 2nd, 2009, 08:09 PM   #10
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did they offer rear disc's on 98 silverado's???
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Old December 2nd, 2009, 08:09 PM   #11
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Make sure the rear brakes are working and adjusted properly, if the fronts are doing all the work it will cause problems.
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Old December 2nd, 2009, 08:12 PM   #12
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Quote:
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did they offer rear disc's on 98 silverado's???
not that I remember
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Old December 2nd, 2009, 08:28 PM   #13
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the calipers are not hanging up already went through that, and the rear breaks are tight i keep them adjusted trying to keep as much stress off the front as i could but that did not seem to help

the rear are drums and i am prett sure they are not out of round

impropper torque on the lugs could be but i havent had any trouble with any of the other cars i have worked on but i will try re torquing them
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Old December 2nd, 2009, 08:56 PM   #14
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driving habits.... My exwife went thru pads and rotors like crazy. She thought she had to stomp on the brakes everytime she stopped and always at the last minute. It played havok on the antilock also.
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Old December 3rd, 2009, 03:46 AM   #15
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Make sure the rear drums are kept properly adjusted, the self-adjusters are known to suck on these trucks.
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Old December 3rd, 2009, 05:44 AM   #16
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does this truck have stock tire size on it? make sure that the front hub where the rotor goes up against is clean, and the rim is clean so there is no debris between them.
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