WARNING: An extremely long and somewhat incoherent post. Read at your own risk.

Vehicle: 97 Chevy 2500 truck, 8600 lb GVW, 5.7L, auto. a/c, CNG (not used), 21426 miles

Problem: MIL on, code P0430- bank 2 catalyst low efficiency …Ya, I know... Login to read more.

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