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08-17-2021, 08:27 PM
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#15 |
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Loves Camaros
Drives: Red '79 Z28, '24 Blk A10 ZL-1 Vert Join Date: Sep 2012
Location: Corpus Christi, TX
Posts: 1,626
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Hell, splice another catch can in the vacuum line to the brake booster and see what happens!
Tara
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Old and new, sharing space!
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08-28-2021, 07:21 PM
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#16 |
 
Drives: 2017 ZL1 Join Date: Jun 2018
Location: Randolph
Posts: 317
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I have it back at
The dealer. They are talking with GMs Perfnrmance group. So They tell me. So far it’s been there almost two weeks and nothing. GM says they have never heard of this happening. The service manager has been on different forums and found other postings about it but no answers on why
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Kooks full exhaust, Roto Fab, Whipple,Williams 103, Fore innovation, JRE cam and tuning
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10-16-2021, 09:09 PM
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#17 |
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Drives: 2017 ZL1 Join Date: Jun 2018
Location: Randolph
Posts: 317
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So after replacing the entire brake system I still get the service brake assist warning. We have been talking to GM performance and is all they can come up with is add a vacuum canister. They are saying the lack of vacuum is causing the warning but the vacuum is 15 pounds as it should be.
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Kooks full exhaust, Roto Fab, Whipple,Williams 103, Fore innovation, JRE cam and tuning
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