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GM Digital EGR
Hello Tech's I have a question regarding GM's digital EGR, the one with three seperate solenoids. I was working on a 95 Lumina 3.1L VIN M the other day, it had a code 77 "EGR Solenoid 3 Fault". While testing the system I tried to actuate the solenoids with bot... Login to read more. ![]()
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