p0053 and p0059
i am using a 07 hummer tune and need to get this vehicle past emissions testing so i cannot disable.
so far i have verified that there is power at the 02's, and i have also plugged into the harness with an old sensor and the heater circuit is working as i verified a 0.8A draw when the heater is activated. (cut heater wire and put meter inline)
is it possible to relax the heater testing in the tune without disabling?
should i purchase new ac delco sensors? rock auto shows these to have less openings.
the harness is from a 06 savana, i purchased sensors to match the harness, 07 hummer shows a different part number for the 02's it looks like only the wire is longer.
sensors are within 6in of manifold, using a cast manifold.

