a few weeks after having finished a quite hefty head/cam/intake mod on a customer car he is plagued with that dreaded "check gas cap" message and at same time when it comes on a bank1 and bank2 lean DTC shows up as well. He went to the dealer as there was a recall out for 2005 C6 and got a new gas cap, but message still pops up every now end then. Lines, fittings, etc. all check out.
Can I turn that stupid message off with HPtuner so that DTC and text message will disappear without any hidden issues?