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2004 gmc envoy_slt_xl
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Discussion Starter · #1 · (Edited)
I'm trying to find the pinout for the C1 connector that goes into the bottom of the under hood fuse box from the pcm and the 32 pin oval connector that comes from the pcm harness that is attached to the firewall side of the fuse box (C107 connector)for a 2003 Envoy XL with the 5.3. I have a project going and cannot find any pinouts for the 2003 and the 2005 and up models are different.
 

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