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what could be wrong with my brakes?

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Old 07-04-2013, 11:16 AM
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But it looks like you got your second place back
Old 07-04-2013, 11:25 AM
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that's odd.
Old 07-04-2013, 11:26 AM
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Weird or what ^
Old 07-04-2013, 12:05 PM
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i mean yeah you have specialty shops, and i'd trust SOME dealerships maybe... but a lot of times the specialty shop is going off alldata granted i've yet to find a flaw, but i dont use it often i stick to GM Global Connect
Old 07-04-2013, 01:44 PM
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^^^ +1.

SI is far superior to Alldata on it's worst day.
Old 07-04-2013, 04:24 PM
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I wouldn't worry about not having brakes if your abs module is bad, I can almost guarnty GM engineered it to fail open, so if the module is bad then you just don't have ABS but your brakes still function. I would be surprised if the snap-on only energized half, sounds like the module is bad or at least half of it is
Old 07-05-2013, 10:56 AM
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Tom from C.E.D. is on the case now. They have never ever sold an ABS control module for my car. Kinda of makes me what to take another look before being the first. He's going to check into it and see what he can find out for me.
Old 07-08-2013, 02:30 PM
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Still in the same place. Brakes work. Not great, but they work. I drove a band new 2013 Malibu for the last few days while I was on vacation. Brakes on it felt head and shoulders better than my Brembo equipped Cobalt. Felt better, stopped better.
Old 07-08-2013, 02:36 PM
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Thinking because it's ABS is working
Old 07-08-2013, 02:39 PM
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I've had several people tell me that they think I have a speed sensor gone bad. Which makes perfect sense. Just need to find out which.
Old 07-08-2013, 02:45 PM
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That just could be the problem and should not be too hard to replace if you find out which one it is
Old 07-08-2013, 02:46 PM
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That just could be the problem and should not be too hard to replace if you find out which one it is, especially if the place you went to told you they have never sold a modulator for a Cobalt
Old 07-08-2013, 02:55 PM
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I'm betting on damaged speed sensor in a hub or the computer has just lost its cookies... I'm still betting its defaulted into some sort of ICE mode because of that. my LNF car used to randomly throw service ECS/ABS messages at me during mountain runs... turn the car off and on and it was fine lol
Old 07-08-2013, 03:12 PM
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I agree Kyle. Tom @ CED was thinking that too. If I could get ahold of a tech2 you can, I'm told, record all for speed sensors and play them back together. if one is wrong it'll be obvious.

The other question I had was, of I go from the stock 225/30 to 235/40 do I have to somehow recalibrate them?
Old 07-10-2013, 09:02 PM
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I dont think you'd need to run a recalibration for the 235's it might just mess with your speed reading
Old 07-10-2013, 09:41 PM
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Originally Posted by Sox-Fan
I agree Kyle. Tom @ CED was thinking that too. If I could get ahold of a tech2 you can, I'm told, record all for speed sensors and play them back together. if one is wrong it'll be obvious.

The other question I had was, of I go from the stock 225/30 to 235/40 do I have to somehow recalibrate them?
If you want to keep your odometer and speedometer accurate, yes.
Old 07-10-2013, 10:26 PM
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Only just seen this thread. I suspect you have an issue with the rear brakes and with air in the system. should not need an abs bleed but a tech 2 is an easy procedure. You may need a
rear brake service and adjust rear piston height. bleed brakes rr/lf/lr/rf etc.

I noticed my RL tonight that the pedal was longer than the SAAB and I may need to look at it . If I trip over anything I will let you know but it wont be tomorrow I have too much going on. PS I got your pan, and I have a trap door ready so tell me when.
Old 07-10-2013, 11:23 PM
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Thanks john. I'll email you tomorrow about the pan. I've been thinking about the back brakes too. Even with new brakes the parking brake has a long throw. I wonder if those self adjusters are not self adjusting. I do now have the ABS working, which is good. Low pedal still. I'll have to take the rears apart Saturday.
Old 07-10-2013, 11:29 PM
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Hope you find the answer soon.
Old 07-11-2013, 12:18 AM
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Originally Posted by Sox-Fan
Thanks john. I'll email you tomorrow about the pan. I've been thinking about the back brakes too. Even with new brakes the parking brake has a long throw. I wonder if those self adjusters are not self adjusting. I do now have the ABS working, which is good. Low pedal still. I'll have to take the rears apart Saturday.
there is a screw mechanism on the hand brake acutated lever in the caliper to the piston. the piston may need to be rotated out manually. The lever adjustment is a 10 mm socket on a 6 x 1 mm nut on the handle underneath the plastic cover. under the handle is a plastic tab depress it and pull the handle cover off. adjust.

check the calipers if its a 2008 and you track it just buy a set of new calipers and put yourself out of your misery. then adjust the pistons out so its a snug fit for the caliper pad assembly to the rotor.

be good
Old 07-11-2013, 09:45 AM
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Thanks. I'll do that. I do track it. I've got an AutoX Sunday and a track day at Roebling Road in 2 weeks.
Old 07-11-2013, 03:20 PM
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This is still a mystery
Old 07-11-2013, 03:29 PM
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Hopefully on Saturday morning it will become less of a mystery.
Old 07-11-2013, 03:31 PM
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Yes it would be good to know the results ^
Old 07-11-2013, 03:32 PM
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They are 9/10ths now. I need to get them to 10/10ths.


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