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2005 gmc envoy_slt
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Discussion Starter #1
I've got a 2005 Envoy with the typical low compression (cylinder #1) issue. I'd like to swap the '05 4.2L I6 with an '03 4.2L I6 from a wrecked TB. My question is: where there any changes between the '05 4.2L and '03 4.2L's that would prevent a direct swap? Any minor component changes or issues?
Thanks!
 
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