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Discussion Starter #1
How do I unplug the wiring harness (module?) from the under hood fuse box in a 2003 Tahoe?
 

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On some I've seen a couple of bolts/screws inside the box that pull the wire harness connectors up to the bottom of the fuse box. See if you have those. Others have tabs that lock the harness connectors into place around the outside.
 

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Discussion Starter #3
Thanks.Mine has the screw that loosens but doesn't come out.Can I pull on the wires to unplug it?
 

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It's a captive screw, won't come out; but when loose the wire plug should pull off the connector.
 

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Like Ray said. Should pull off the bottom. Check for any locking tabs too.
 
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