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Old 02-13-2019, 03:19 PM   #15
Zzsteve
 
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Drives: 2018 2SS
Join Date: Oct 2017
Location: Grand rapids, MI
Posts: 219
doing a little more digging on this, the 2018 uses an "E80-A" ECM, where the 16 and 17 use an "E80" which is likely the difference. the flex has likely always worked once wired/enabled on the 18 models. GM did this same thing with the LHU ECU's a few years back. (and the chevy cruze....flex doesnt work on the 11, but does on 12+even though its the 'same')

we actually have an 18 ATS here which shares the same part number ECM as the 18 Camaro. im going to try to get that in tomorrow or friday to test the theory that its an 18+ or "e80-a" fix currently. if it is, ill look into swapping the 80-A core into our 17 (if its even feasible). and if that goes well, the 18 core may just be the fix for the 16-17 models!

thanks to the OP for trying this on an 18 model! if this is the fix, this will be HUGE for this community!
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