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International Automotive Technicians Network
Re: 4.8 gm interchange
Posted to Technical Discussion Forum on 1/2/2020

Interchange says 05-06 Silverado, Tahoe and Yukon along with 07 Silverado Classic for the 4.8L.

Not sure what is different on the earlier ones but you may hunt up cam/ckp waveforms for both and see if they match and then it might just be a matter of changing... Login to read more.