Hey guys,
My girlfriends truck (01 4.3 silverado auto) has been kicking codes about both cats having low efficiency since we started getting ethanol blended fuels at all the stations around here. its up for emissions, and i want to put a set of o2 sims in it to get it by. Are the o2s the same as in any other gm for that year? Woud o2 sims for an 01 SS camaro work?

Thanks!