11-01-2021, 11:18 AM
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#3
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Drives: 2017 2SS, 50th pkg, M6, MRC, NPP
Join Date: Jan 2016
Location: Ocean City, NJ
Posts: 3,578
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Agree, probably fuel pump.
After ignition off, the car doesn't really go to sleep until 10 minutes have passed.
See this pdf:
https://gm-techlink.com/wp-content/u...ember_2020.pdf
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