Catalyst Monitor NOT Ready

[TheLazyRocket]

I have been driving forever trying to get my Catalyst Monitor to come back on, my codes and everything were erased and I have been doing the recommended GM drive cycle and someone told me to hop on the freeway and go 55mph for 30 miles. My CEL codes came back but the o2 and CAT monitors have not. I have driven 1500m since the reset. Any other recommendations, could something be preventing it from finishing its onboard tests?

[TheLazyRocket]

I found this... Blocked monitors can have different consequences depending on the situation. If a vehicle fails it’s AirCare

 

inspection with a P0300 (random misfire code), it is likely to have blocked several monitors from running. If this misfire has been happening for the last six months, this is very likely to

 

have damaged the catalyst.

 

I have p0300 and p0441.