Removal Procedure

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

Battery Negative Cable - Disconnect - Battery Negative Cable Disconnection and Connection (Single Battery) , or Battery Negative Cable Disconnection and Connection (Dual Battery)
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Remove the left hand seat (2). Front Seat Removal and Installation
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Fuse Block Cover(1) - Remove
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Instrument Panel Wiring Harness Junction Block Nut (1) - Remove
Instrument Panel Wiring Harness Terminal (2) - Reposition
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Disconnect all electrical connectors.(1)
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Unclip the wiring harness.(1)
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Body Wiring Harness Terminal Bolt (1) - Loosen[2x]
Release the tabs that retain the body wiring junction block (2) to the junction block base.