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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1724 (Wiring Systems (General Information)) >> Repair Instructions >> Underhood Electrical Center or Junction Block Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Battery.
    2. Fig 1: Removing/Installing Underhood Electrical Wiring
    GM934966Courtesy of GENERAL MOTORS CORP.
  2. Remove the underhood accessory wiring junction block cover.
  3. Remove the nut at the end of the fuse block and remove both the positive battery cable and the EPS cable.
    4. Fig 2: Locating Underhood Fuse Block (UHFB) Fuse Cover
    GM934982Courtesy of GENERAL MOTORS CORP.
  4. Loosen the bolts (1) on the top of the fuse block until the block can be lifted off the connectors.
  5. Remove the IP connectors (2).
    6. Fig 3: Placing Connectors Into Fuse Block Case
    GM935025Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: All 3-fuse block 68-way connectors are held into place to the fuse block case by push-in retainers.
  6. Pull up on each of the following 68-way connectors until they come out.
    1. Fuse block case (1)
    2. Forward lamp 68-way connector (2)
    3. Engine 68-way connector (3)
    4. IP 68-way connector (4)
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