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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1561 (Wiring Systems And Power Management - Repair Instructions) >> Repair Instructions >> Underhood Electrical Center or Junction Block Replacement

Underhood Electrical Center or Junction Block Replacement

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: View Of Underhood Electrical Center/Junction Block
GM1827690Courtesy of GENERAL MOTORS CORP.
Callout Component Name
Preliminary Procedure: 
Disconnect the battery. Refer to Battery Negative Cable Disconnection and Connection (Single Battery) or Battery Negative Cable Disconnection and Connection (Dual Batteries) or Battery Negative Cable Disconnection and Connection (Auxiliary Battery) .
1 Underhood Electrical Center/Junction Block
Tip: 
  • Remove the cover.
  • Release the retainers securing the junction block to the bracket.
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