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Old 06-28-2018, 01:53 PM   #2
Gordo-D
 
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Drives: 2015 Camaro 2SS
Join Date: Oct 2016
Location: Manchester, England
Posts: 391
It could be your starter motor, it draws a very large amount of current on start up, also I would have your alternator tested first.
Bad ground connection, check the ground wires especially in the trunk.
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