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Old Dec 21, 2017 | 10:44 AM
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Hello,

I am looking to see if anyone has ever had a similar problem or advice.

2000 Corvette, auto, 100k miles, headers, intake, was lowered for several years, year ago raised to stock height.

The problem.

Driving 60 MPH traffic stops I have to slam on the brakes, brakes lock up and skid for 30 feet. Ever since that incident the car feels and sounds like I am running over bumps in the road.

Thank you for any advice.

Last edited by alucero258; Dec 21, 2017 at 11:20 AM.
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Old Dec 21, 2017 | 10:48 AM
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Warped rotors? Is it only bumpy when applying brakes, or all the time?
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Old Dec 21, 2017 | 10:51 AM
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Originally Posted by c5vetteguy
Warped rotors? Is it only bumpy when applying brakes, or all the time?
Good question. If it's only when applying brakes, the rotors are probably not warped, but there is a good chance of a high spot on the rotor from the brake pads getting hot after the panic stop and resting on the rotor surface. Especially if you're using generic off the shelf cheap pads from a local supplier. A good brake bed-in procedure will likely fix that.

Unless your ABS isn't working and you flat spotted a tire, I don't see it being anything else if it's related to this 60mph stop incident.

Last edited by Quickshift_C5; Dec 21, 2017 at 05:53 PM.
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Old Dec 21, 2017 | 11:51 AM
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It is happening all the time and not just during braking.

The ABS light is on, so your suggestion that the tires have a flat spot makes sense.

Thank you for your responses.
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Old Dec 21, 2017 | 11:59 AM
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You should be able to pull up the DIC codes and see what's going on with the ABS. Check here -> http://www.stengel.net/diccodes.htm

Good luck!
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Old Dec 21, 2017 | 02:06 PM
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Moved to C5 Tech.
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Old Dec 22, 2017 | 12:21 AM
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Your braking system is HOSED!!! You need to FIRST, read and post all of the DTCs using the onboard diagnostic routine in the DIC.

You MUST read the DTCs after you have take the car for a short drive and NOT turning the ignition OFF.

You most likely have a TON of old DTCs so, I would clear ALL of them, take the car for a drive and then read the DTCs. Report ALL of what comes back

If you have warning messages in the DIC, press reset till they go away.

Cant wait to see what DTCs you have...

Bill

Last edited by Bill Curlee; Dec 22, 2017 at 12:22 AM.
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Old Dec 22, 2017 | 06:07 AM
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Originally Posted by c5vetteguy
Warped rotors? Is it only bumpy when applying brakes, or all the time?
OR, a broken shock. Get the car off the ground, high enough to check each wheel and suspension. Ball joints, tie rods out of adjustment. It could be one of many things. You have to get under it and take a look.
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