2017 C7 GS Brake soggy/idiot light
11-10-2018, 01:47 AM
#1
Pro
Thread Starter
2017 C7 GS Brake soggy/idiot light
I only have 16000 miles, never raced or tracked, 80% highway miles.
Brakes felt soggy, light has come on 3 X in the past 4 days, added fluid
I even pulled the pads off the front, they are fine...suggestions.
OH, I got the WRONG Hawk Performance replacement pads (No electric
wire for sensor) FS $ 30.
Brakes felt soggy, light has come on 3 X in the past 4 days, added fluid
I even pulled the pads off the front, they are fine...suggestions.
OH, I got the WRONG Hawk Performance replacement pads (No electric
wire for sensor) FS $ 30.
11-10-2018, 08:42 AM
#2
I only have 16000 miles, never raced or tracked, 80% highway miles.
Brakes felt soggy, light has come on 3 X in the past 4 days, added fluid
I even pulled the pads off the front, they are fine...suggestions.
OH, I got the WRONG Hawk Performance replacement pads (No electric
wire for sensor) FS $ 30.
Brakes felt soggy, light has come on 3 X in the past 4 days, added fluid
I even pulled the pads off the front, they are fine...suggestions.
OH, I got the WRONG Hawk Performance replacement pads (No electric
wire for sensor) FS $ 30.
11-10-2018, 10:39 AM
#3
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Member Since: Oct 1999
Location: Charlotte, NC (formerly Endicott, NY)
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I only have 16000 miles, never raced or tracked, 80% highway miles.
Brakes felt soggy, light has come on 3 X in the past 4 days, added fluid
I even pulled the pads off the front, they are fine...suggestions.
OH, I got the WRONG Hawk Performance replacement pads (No electric
wire for sensor) FS $ 30.
Brakes felt soggy, light has come on 3 X in the past 4 days, added fluid
I even pulled the pads off the front, they are fine...suggestions.
OH, I got the WRONG Hawk Performance replacement pads (No electric
wire for sensor) FS $ 30.
If pads were worn out you still wouldn't have a soggy pedal. Having a soggy pedal and having the brake light come on is indicative of a hydraulic problem. Either a leak, air in the brake lines or maybe a bad master cylinder. If you have a brake pad that is not moving properly in a caliper that could also cause a soggy feeling in the brake pedal but that wouldn't cause the light to light. Why didn't you check the rear?
If your car requires the electric pad wear sensors you should have a warning message in the DIC indicating you have worn pads if the sensors are missing or are broken.
Bill
11-10-2018, 12:57 PM
#4
Pro
Thread Starter
I bought the Hawk Perf. Ceramic WB649 Z.605 (D1405?), about $ 140. after seeing a how to on Ytube, a 2018 C7 GS, mist be different.
I have a Z06 GS if that make a diff. Anyway selling the Hawks, never installed. They are to replace my OE Brembo Ceramic.
I have a Z06 GS if that make a diff. Anyway selling the Hawks, never installed. They are to replace my OE Brembo Ceramic.
11-10-2018, 01:02 PM
#5
Pro
Thread Starter
I still have the OE Brembo Ceramic, (With a wire to send a signal) The fronts look brand new. From what I remember the fronts always wear faster than rears.
But will pull rears anyway. If the fronts are "New" cond. why would the rears be sending my DIC a message sooooo soon?
Now I have to go back online to by the RIGHT ONES for a 2017 C7 GS Z06 Pkg. so I have some when I do the remove and inspect....
Soggy is not that bad, but after 1-2 hours of highway driving, I'll have to pump them a short pump to get them to come alive.
But will pull rears anyway. If the fronts are "New" cond. why would the rears be sending my DIC a message sooooo soon?
Now I have to go back online to by the RIGHT ONES for a 2017 C7 GS Z06 Pkg. so I have some when I do the remove and inspect....
Soggy is not that bad, but after 1-2 hours of highway driving, I'll have to pump them a short pump to get them to come alive.
11-10-2018, 01:08 PM
#6
Take it to the dealer...
11-10-2018, 01:18 PM
#7
Are you sure they are listed as WB and not HB? I reached out to Hawk Performance and they told me the correct part number for my GS front brakes is HB649 Z.605. They are ceramic brakes. I plan on installing them next week when I get back from a trip. What gives you the impression these are the wrong parts to use?
11-10-2018, 01:20 PM
#8
I still have the OE Brembo Ceramic, (With a wire to send a signal) The fronts look brand new. From what I remember the fronts always wear faster than rears.
But will pull rears anyway. If the fronts are "New" cond. why would the rears be sending my DIC a message sooooo soon?
Now I have to go back online to by the RIGHT ONES for a 2017 C7 GS Z06 Pkg. so I have some when I do the remove and inspect....
Soggy is not that bad, but after 1-2 hours of highway driving, I'll have to pump them a short pump to get them to come alive.
But will pull rears anyway. If the fronts are "New" cond. why would the rears be sending my DIC a message sooooo soon?
Now I have to go back online to by the RIGHT ONES for a 2017 C7 GS Z06 Pkg. so I have some when I do the remove and inspect....
Soggy is not that bad, but after 1-2 hours of highway driving, I'll have to pump them a short pump to get them to come alive.
11-10-2018, 01:30 PM
#9
Pro
Thread Starter
My bad, the ones I bought are HB649 Z.605 they have no wire connector to the DIC. So you say I should have gotten WB649 Z.605 ???
If I can do the brakes myself and they feel fine, no need to waste a day at a dealer, of course brakes are not covered, master cylinder, lines etc.
If I can do the brakes myself and they feel fine, no need to waste a day at a dealer, of course brakes are not covered, master cylinder, lines etc.
11-10-2018, 01:31 PM
#10
Pro
Thread Starter
YUP, Z07, Chevy has to many ZZZZZ's
11-10-2018, 01:52 PM
#11
My bad, the ones I bought are HB649 Z.605 they have no wire connector to the DIC. So you say I should have gotten WB649 Z.605 ???
If I can do the brakes myself and they feel fine, no need to waste a day at a dealer, of course brakes are not covered, master cylinder, lines etc.
If I can do the brakes myself and they feel fine, no need to waste a day at a dealer, of course brakes are not covered, master cylinder, lines etc.
11-10-2018, 02:20 PM
#12
My bad, the ones I bought are HB649 Z.605 they have no wire connector to the DIC. So you say I should have gotten WB649 Z.605 ???
If I can do the brakes myself and they feel fine, no need to waste a day at a dealer, of course brakes are not covered, master cylinder, lines etc.
If I can do the brakes myself and they feel fine, no need to waste a day at a dealer, of course brakes are not covered, master cylinder, lines etc.
11-10-2018, 02:22 PM
#13
Safety Car
If it’s like my brothers Porsche you can just by pass that wire. Just use the old connector from your previous pads and join the two wires together. This tricks the system into thinking the pads are fine and stops the warring light.
The system is very simple: it works by completing a circuit, when the pads wear down the wire “breaks” which interrupts this circuit setting off the light. If you join the two wires together permanently (and carefully tuck them away) you can run whatever pads you want. Of course with no warning light you’ll have to check pad level yourself. Almost all pads have that squeaker that hits the rotors making a very noticeable sound which is your clue they are worn out.
The system is very simple: it works by completing a circuit, when the pads wear down the wire “breaks” which interrupts this circuit setting off the light. If you join the two wires together permanently (and carefully tuck them away) you can run whatever pads you want. Of course with no warning light you’ll have to check pad level yourself. Almost all pads have that squeaker that hits the rotors making a very noticeable sound which is your clue they are worn out.
11-10-2018, 02:39 PM
#14
Pro
Thread Starter
I don't intend to track the car, or even street race (Over 110 MPH). Just want something that fits, and has the connector wire. Car has the Z07 Perf. Pkg. with Brembo,
so I'd want something equal or better. So, the fronts (original Brembo's) have plenty of meat on them, looks like I need to find rear's, assume they would have a DIC wire as well. Can't find rear's online, seems they have 100 fronts, so that really makes me think my rear's are OK.
But willing to order replacement rears BEFORE I jack it up and dismount, equal or better than my Z07 OE.
As far as the "Dealer", I hate them. I have a few Mods that they claim would void this warranty and that warranty, which I know is total BS, but I can see the Chevy Tech running to the Service Mgr. when he can't diagnose, or is lazy and pointing out my MODS. (none really have much to due with warranty items) I don't expect my brake's to be any different. Sad.
So, in the market for Rear pads....
so I'd want something equal or better. So, the fronts (original Brembo's) have plenty of meat on them, looks like I need to find rear's, assume they would have a DIC wire as well. Can't find rear's online, seems they have 100 fronts, so that really makes me think my rear's are OK.
But willing to order replacement rears BEFORE I jack it up and dismount, equal or better than my Z07 OE.
As far as the "Dealer", I hate them. I have a few Mods that they claim would void this warranty and that warranty, which I know is total BS, but I can see the Chevy Tech running to the Service Mgr. when he can't diagnose, or is lazy and pointing out my MODS. (none really have much to due with warranty items) I don't expect my brake's to be any different. Sad.
So, in the market for Rear pads....
11-10-2018, 02:42 PM
#15
Pro
Thread Starter
Bruno, your 100% right. But to spare my pain of waiting 7-10 days for a Vette tech to be available, and sitting in
the "lounge" for 6-7 hours, I tend to do as much as possible myself.
the "lounge" for 6-7 hours, I tend to do as much as possible myself.
11-10-2018, 02:43 PM
#16
Supporting Vendor
The Z07 brakes are different than the Z06.
HB649*.605
This fits C7 Corvette Z06/Grand Sport with IRON brakes.
HB = Hawk Brakes
649 = the application which is FMSI D1405. This is as mentioned the front pad shape for the C7 Z/GS w/ iron
* = the pad compound Hawk has many. Z = Performance Ceramic which are ceramic low dust street pads. This is not to be confused with Z07 Ceramic brake setup.
.605 = the thickness of the pad in inches.
If you have the ceramic brakes the Hawk front # is HB631*.622 but these are NOT designed for ceramic rotors and I don't think that they include wear sensors.
-Ken
HB649*.605
This fits C7 Corvette Z06/Grand Sport with IRON brakes.
HB = Hawk Brakes
649 = the application which is FMSI D1405. This is as mentioned the front pad shape for the C7 Z/GS w/ iron
* = the pad compound Hawk has many. Z = Performance Ceramic which are ceramic low dust street pads. This is not to be confused with Z07 Ceramic brake setup.
.605 = the thickness of the pad in inches.
If you have the ceramic brakes the Hawk front # is HB631*.622 but these are NOT designed for ceramic rotors and I don't think that they include wear sensors.
-Ken
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bankers1 (11-11-2018)
11-10-2018, 02:55 PM
#17
Supporting Vendor
The Z07 brakes are different than the Z06.
HB649*.605
This fits C7 Corvette Z06/Grand Sport with IRON brakes.
HB = Hawk Brakes
649 = the application which is FMSI D1405. This is as mentioned the front pad shape for the C7 Z/GS w/ iron
* = the pad compound Hawk has many. Z = Performance Ceramic which are ceramic low dust street pads. This is not to be confused with Z07 Ceramic brake setup.
.605 = the thickness of the pad in inches.
If you have the ceramic brakes the Hawk front # is HB631*.622 but these are NOT designed for ceramic rotors and I don't think that they include wear sensors.
-Ken
HB649*.605
This fits C7 Corvette Z06/Grand Sport with IRON brakes.
HB = Hawk Brakes
649 = the application which is FMSI D1405. This is as mentioned the front pad shape for the C7 Z/GS w/ iron
* = the pad compound Hawk has many. Z = Performance Ceramic which are ceramic low dust street pads. This is not to be confused with Z07 Ceramic brake setup.
.605 = the thickness of the pad in inches.
If you have the ceramic brakes the Hawk front # is HB631*.622 but these are NOT designed for ceramic rotors and I don't think that they include wear sensors.
-Ken
HB632Z.586
Same situation though. Not designed for ceramic rotors.
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MMD (11-10-2018)
11-10-2018, 03:05 PM
#19
The Z07 has carbon ceramic rotors. Do you know of replacement brake pads (front/back) for the carbon ceramic rotor Z07? I think this is what the poster was asking. I was surprised when he said he wound up purchasing brake pads meant for iron rotors.
11-10-2018, 03:12 PM
#20
Supporting Vendor
"Ceramic" pads does not equal made for "cermaic brakes"
I would only get the GM pads for the ceramic brakes.
There are some aftermarket race pads for those but no one has made a street pad yet. That technology is not developed in the aftermarket. Hawk makes the pad shapes because they are used in other non-ceramic applications.
I would only get the GM pads for the ceramic brakes.
There are some aftermarket race pads for those but no one has made a street pad yet. That technology is not developed in the aftermarket. Hawk makes the pad shapes because they are used in other non-ceramic applications.
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djnice (11-23-2018)