I am looking at a new 2005 Silverado Crew Cab. Someone told me that the
5.3 in the Crew Cab only had been refined/redesigned/upgraded early in
the model year. Does anybody know the facts behind this? Also, where
From what I can see...it looks like the 5.3 in certain applications will
come with either a cast iron block or aluminum block. They've already
been running the all aluminum 5.3 in the Trailblazers. There are some
other changes, but nothing major.
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