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07-08-2007, 02:25 PM
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#1
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Montana Master
Join Date: Jan 2006
Location: South
Posts: 2,499
M.O.C. #5140
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Squeaky brakes on '07 GMC 3500
As most of you know, I am not a mechanic. So, any ideas on how to stop the brakes from squealing? I have had the tires rotated (and while off, compressed air blown into brakes), I've used brake cleaner and plain old water. Driving me nuts!
Thanks,
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07-08-2007, 02:56 PM
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#2
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Montana Master
Join Date: Jan 2007
Location: Lobelville
Posts: 2,128
M.O.C. #6650
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snfexpress, I have the same brake squeal and I also had it on the 2005 3500. With the 2005 I took it back to have it checked and they pulled the wheels and check. Couldn't find any problem. Its just one those things that is a common thing. I don't understand why it happens, but it seems to come from the passenger side. Touch the brakes lightly and it goes away?????? But I'm sure someone might be able to help us.... GBY......
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07-08-2007, 03:17 PM
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#3
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Montana Master
Join Date: May 2006
Location:
Posts: 1,700
M.O.C. #5751
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Sorry, guys, can't help you, my brakes are quiet...at least until I made this post!
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07-08-2007, 03:42 PM
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#4
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Montana Master
Join Date: Aug 2006
Location: Texico
Posts: 1,917
M.O.C. #6150
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I'm not an expert on brakes anymore, but I will offer all I know.
Several years ago all brake pads and shoes were made mostly of asbestos. These linings didn't really have a very long life, and then asbestos was found to cause cancer. In an attempt to prolong the life of the linings, and do away with the asbestos, they started using semi-metallic, metallic, and ceramic materials for the linings. The more metal or ceramic the linings have, the more they squeal, especially when they get hot or dirty, and as the rotors and pads wear, they get a glaze on them that compounds the problem. Having the rotors turned, and scuffing the pads with very course emery cloth will stop the squeal for awhile, but in most cases, not indefinately. As I said, I'm no expert, and someone who is may have a better answer and cure for the problem.
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07-08-2007, 08:42 PM
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#5
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Montana Master
Join Date: Nov 2005
Location: Campbell River
Posts: 970
M.O.C. #4976
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Get a softer lining, I owned a fleet of school buses over the last 17 years, (all GMs) half of the buses would squeal when the drivers applied the brakes, If it got too bad we would put new lining on and the noise would go away. The hard lining that came on the buses would warp the rotors pretty quickly too. Softer lining was a lot easier on the rotors. Down side... softer lining doesn't last as long. It took a few years to find the right lining to fit the bill. To be easier on the rotors and last a decent length of time.
J&D
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07-09-2007, 02:18 AM
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#6
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Montana Master
Join Date: Jan 2003
Location: Haldimand County
Posts: 2,413
M.O.C. #122
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We have the same problem. Out dealer has talked to GM and they are going to skim the rotors and change the pads under warranty. We complained about this from Day 1, the initial response was to "run them in for a while", well they have not got any better. I pretty much agree with LonnieB. I don't have high expectations for a total cure. On ours, it seems to be the rear discs that squeal. I was somewhat surprised to see that I seem to have 4-wheel disc brakes, I had thought GM had gone back to rear drums. (BTW, our '01 did not have brake squeal anything like our '07, and it had 4 wheel discs too). Anyway, we are on our way out the door to the dealers for this work, I'll let you know how it turns out.
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07-09-2007, 05:21 AM
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#7
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Montana Master
Join Date: Nov 2005
Location: Paola
Posts: 5,739
M.O.C. #4961
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Lonnie is right. The dealer will turn the rotors and put new pads on but as soon as you break hard a few time the glaze will return and so will the squeal. I have been down that road with other units. You can do as John stated and go with a non metallic pad and the squeal will go away. However you will be changing pads more often. The squeal on my unit comes and goes so I just live with it.
__________________
Dennis & Linda Ward
Paola, Kansas
Montana 3735MK Legacy Edition
1200 watts of Solar
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07-09-2007, 07:59 AM
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#8
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Montana Master
Join Date: May 2006
Location: San Jose
Posts: 728
M.O.C. #5740
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The brakes on my 2007 3500 only squeak sometimes. I can't find any pattern as to why they squeak or why the squeak goes away. I agree just live with it.
You could turn the radio up louder and then you won't hear it.
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07-09-2007, 01:24 PM
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#9
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Montana Master
Join Date: Jan 2006
Location: South
Posts: 2,499
M.O.C. #5140
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Thanks - it looks like I'll just live with it.
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07-10-2007, 06:06 AM
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#10
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Montana Fan
Join Date: Jun 2005
Location: WARE
Posts: 393
M.O.C. #3928
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IF IT'S UNDER WARRENTY I'D HOUND THEM EVERY DAY and GOTO A DIFFERENT DEALER. [SORRY BOUT CAPS]
Between you and me ..did you glase them over while doing down grades with controller on too low a setting??? Is this a squeal from day 1 or recent?
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