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envoy engine replacement 03-04 differences

Discussion in 'GM Powertrain' started by poison0046, Mar 2, 2010.

  1. poison0046

    poison0046 New Member

    I am doing an engine replacement for a friend of mine and I need some questions answered and hopefully this is were I can get it. The vehicle is a 2004 envoy xuv with a 5.3L v8 vin p. My question is, what Is the difference between the 2003 and the 2004 engines? I have found some good priced engines but they are for an 03 and the guy is telling me that they have to be year specific. Everything that I have found is that they are almost the same exact vehicle from 2003-2004 with only minor changes. Anyone know what these changes were and why a 03 engine won't fit in the 04?

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