How can I tell what flash I have? I would assume I've had them all.

still no fix. I was having problems way before the G30 recall and I've been back several times since then. Last time in the shop was June 18
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07.5 6.7L Cummins 2500 SLT QC 4X4, Brilliant Black, Thunderroad, AIRAID stage 2, 4" H&S DPF delete w/downpipe, EGR delete, deleted factory muffler, 5" tip