OEM 2003 Chevrolet Avalanche 1500 Fuse Box

2003 Chevrolet Avalanche 1500 Fuse Box Parts and Q&A

• Q: How to replace the underhood fuse box on 2003 Chevrolet Avalanche 1500?

  A: The first step when replacing an underhood electrical center or junction block requires disconnecting the negative Battery Cable and taking out the left fender upper brace. You must raise the electrical center brace cover from its base to expose the tabs and after that remove all fuses and relays. A grip of the tab will unlock the electrical center from its stud location at while you remove each connector through its bolt . All electrical connectors must be removed from the block while using tabs to raise the electrical center upward from the housing. The replacement of the engine electrical center bracket requires removing the 4 retaining bolts which allows extraction of the assembly from its fender position. The engine electrical center bracket assembly needs to be secured to the front fender by using 4 retaining bolts which must be tightened to 9 n.m (80 lb in). Secure the electrical center block stubs into their designated slots before the tabs catch them securely. Subsequently, connect wire connectors to the electrical center block bottom half and fasten them using bolts which need tightening to 9 n.m (80 lb in). The electrical center block must be placed correctly so that its tabs secure the block in position. The installation order requires officials to first place the lower cover section before locating fuses and relays according to the information chart to finish with the cover application. The fender upper brace installation requires you to attach it using 4 bolts which must be tightened to 25 n.m (18 lb ft). After reconnecting the negative cable verify every component works correctly by starting the vehicle.