So as to not hijack the DTCs thread, I started this one. P0420 and P0430 are both set to show no SES and no error reported. Was this in your original tune?
So as to not hijack the DTCs thread, I started this one. P0420 and P0430 are both set to show no SES and no error reported. Was this in your original tune?
2000 Sierra 2500 HD. 408 (11-2007) Whipplecharged, Big (18x24x4) FMIC.
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