C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Problem.. kinda?

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Old Apr 15, 2008 | 02:30 PM
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Master__Shake_'s Avatar
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Default Problem.. kinda?

Not sure if this is normal or not, since I've never driven another C4 before, but after about 5-10 feet of driving it out of being parked it makes a whurring-hum noise from the back. Like from the rear wheel cavity. Any ideas?

Kinda makes me think of the Vette's super rocket boosters engaging.
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Old Apr 15, 2008 | 02:32 PM
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Sounds like the ABS check. Normal. Does the ABS light on the dashboard also come on for a second and then go off?

Matthew
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Old Apr 15, 2008 | 02:35 PM
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Not that I noticed, but when I drive it again I'll look. Does it every time I drive, so it isn't one of those "random occurance" things.
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Old Apr 15, 2008 | 02:43 PM
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Originally Posted by Matatk
Sounds like the ABS check. Normal. Does the ABS light on the dashboard also come on for a second and then go off?

Matthew


It happens everytime I put the car into drive after backing out of my garage.
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Old Apr 15, 2008 | 03:40 PM
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Is the ABS pump motor cycling fluid. Does it forward or reverse.

Be happpy you hear it.
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Old Apr 15, 2008 | 03:47 PM
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Originally Posted by pcolt94
Is the ABS pump motor cycling fluid. Does it forward or reverse.

Be happpy you hear it.
It's normal.
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Old Apr 15, 2008 | 09:29 PM
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Originally Posted by Master__Shake_
Not sure if this is normal or not, since I've never driven another C4 before, but after about 5-10 feet of driving it out of being parked it makes a whurring-hum noise from the back. Like from the rear wheel cavity. Any ideas?

Kinda makes me think of the Vette's super rocket boosters engaging.
Thanks for asking, I have been wondering about that.
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Old Apr 15, 2008 | 09:35 PM
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Don't remember the exact wording fromthe FSM, but the ABS unit does a self-test cycle at 5 mph after every restart.
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