Removal Procedure

Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
Remove the front compartment front sight shield. Refer to Front Compartment Front Sight Shield Replacement .
Lift the tab (1) on the cover (2) upward and twist the cover 90 degrees to disengage the cover from the hinge.

Fig 1: Front Compartment Fuse Block Housing Cover & Tab
Courtesy of GENERAL MOTORS COMPANY
Press the retainer tabs (1) outward and lift the pre fuse cover (2) from the pre fuse base.

Fig 2: Pre Fuse Cover & Retainer Tabs
Courtesy of GENERAL MOTORS COMPANY
Remove the pre fuse base nuts (1) and reposition the pre fuse base from the front compartment fuse block housing.

Fig 3: Pre Fuse Base Nuts
Courtesy of GENERAL MOTORS COMPANY
Release the 4 retainer tabs (1) using a suitable hook-like tool to release the locking levers (2) to allow the locking levers to be rotated to the full up position.

Fig 4: Pre Fuse Base Locking Levers & Retainer Tabs
Courtesy of GENERAL MOTORS COMPANY
Remove the front compartment fuse block housing by lifting on the locking levers (1) then with a slight shacking motion on the locking levers remove the front compartment fuse block housing from the fuse block housing base (2).

Fig 5: Fuse Block Housing Base & Locking Levers
Courtesy of GENERAL MOTORS COMPANY
Disconnect the 5 individual electrical connectors from the fuse block base, connector bases unclip from fuse block base by releasing the retainer (1) with slight pressure pushing them outward, all 5 connectors are color coded to the base.

Fig 6: Fuse Block Base Releasing Retainers
Courtesy of GENERAL MOTORS COMPANY
Undo the 3 Christmas tree fasteners holding the wiring harness to the fuse block base.
Remove the 4 nuts (1) from the fuse block housing base (2) push the wiring harness away and remove the fuse block housing base from the vehicle.

Fig 7: Fuse Block Housing Base & Mounting Nuts
Courtesy of GENERAL MOTORS COMPANY