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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1628 (Wiring Systems (General Information)) >> Repair Instructions >> Underhood Electrical Center or Junction Block Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the engine electrical center bracket assembly to the front fender.
    NOTE: Refer to FASTENER NOTICE .
  2. Install the 4 retaining bolts (1).

    Tighten 

    Tighten the 4 retaining bolts (1) to 9 N.m (80 lb in).

    Fig 1: Installing Retaining Bolts
    G01576958Courtesy of GENERAL MOTORS CORP.
  3. Align the electrical center block (1) stubs in the slots so that the tabs (2) retains it in place.
    Fig 2: Aligning Electrical Center Block
    G01576959Courtesy of GENERAL MOTORS CORP.
  4. Connect the wire connectors to the lower portion of the electrical center block.
  5. Connect the wire connectors with the bolts to the electrical center block.

    Tighten 

    Tighten all connector bolts (1) to 9 N.m (80 lb in).

  6. Ensure all wire connectors are securely connected.
  7. Set the electrical center block in its resting position till the tabs (3) locks in place.
    Fig 3: Bolts, Tabs & Electrical Center Block
    G01576960Courtesy of GENERAL MOTORS CORP.
  8. Install the lower part of the cover (1).
  9. With the cover (2) off, use the fuse location information to install all fuses and relays.
  10. Install the cover.
    Fig 4: Installing Lowest Part Of Cover
    G01576961Courtesy of GENERAL MOTORS CORP.
  11. Install the fender upper brace.
  12. Instal the 4 fender upper brace bolts.

    Tighten 

    Tighten the 4 retaining bolts to 25 N.m (18 lb ft).

  13. Connect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE (SINGLE BATTERY) or BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE (AUXILIARY BATTERY) .
  14. Start vehicle and ensure all components function properly.
    Fig 5: Installing Fender Upper Brace Bolts
    G01576962Courtesy of GENERAL MOTORS CORP.
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