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<blockquote data-quote="JMcCourt" data-source="post: 23712" data-attributes="member: 8764">Well we think we have an answer: fuel pump drivers module. Appears that water had gotten into the pins and corroded the connection, causing it to short out and continually run the fuel pump, drawing enough power throughout the day/night to drain the battery. Our clue was a “hissing” sound in between the two rear tires after the vehicle was shut off and locked after about 30-40 seconds. The sound, coupled with the checking the error code led the group of determined mechanics to check this module. On my 2019 Equinox Premier, it is tucked into a small competent in the far back on the drivers side. It not only requires that cover to be removed, but also the rear cover over the spare tire. Quite the job to get there but once they pulled the module, the issue was pretty evident with all the corrosion. Replaced the module (couple of hundred dollars) and replaced the fuses and so far all is good. They kept the vehicle overnight to double check but are confident that this was the cause of the issue. If anything changes, I’ll follow up.</blockquote>

[QUOTE="JMcCourt, post: 23712, member: 8764"] Well we think we have an answer: fuel pump drivers module. Appears that water had gotten into the pins and corroded the connection, causing it to short out and continually run the fuel pump, drawing enough power throughout the day/night to drain the battery. Our clue was a “hissing” sound in between the two rear tires after the vehicle was shut off and locked after about 30-40 seconds. The sound, coupled with the checking the error code led the group of determined mechanics to check this module. On my 2019 Equinox Premier, it is tucked into a small competent in the far back on the drivers side. It not only requires that cover to be removed, but also the rear cover over the spare tire. Quite the job to get there but once they pulled the module, the issue was pretty evident with all the corrosion. Replaced the module (couple of hundred dollars) and replaced the fuses and so far all is good. They kept the vehicle overnight to double check but are confident that this was the cause of the issue. If anything changes, I’ll follow up. [/QUOTE]

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