I recently purchased a 2000 K3500 with the 7.4 Vortec. After getting home and doing a more in depth check out of the whole truck I noticed it does not have catalytic converters, and only has two O2 sensors just aft of the manifolds on both sides.
I’m pretty sure originally the truck would have had converters, and O2 sensors post converts. Is this correct? Also there are no codes or check engine light, so would you assume there has been some kind of tune done? Thanks
I’m pretty sure originally the truck would have had converters, and O2 sensors post converts. Is this correct? Also there are no codes or check engine light, so would you assume there has been some kind of tune done? Thanks