excessive oil burn,is it a chevy glitch or what

What is your question?

changing my oil every other month due to excessive oil burn,i even use lucas just in case I run over my time to keep my engine good,its woeking but the cost of a oil change every other month is abnormal what year doesn't have this issue ive seen a 2007 suburban with the same issue What seems to make the problem better or worse? excessive oil burn How long have you had this problem? since i bought it