OEM Chevrolet Silverado 3500 Fuse Box

Chevrolet Silverado 3500 Fuse Box Parts Questions & Experts Answers

• Junction Block
  15139209
  Q: How to replace the underhood fuse box on Chevrolet Silverado 3500?

  A: The first step for replacing the underhood electrical center or junction block is to disconnect the negative Battery Cable. Open the electrical center brace cover by lifting it outwards and remove the left fender upper brace. Begin by extracting all fuses and relays then press the tab to turn the electrical center mounted on the studs at position. Remove all connectors by detaching their bolts before disconnecting them from the electrical center block. Tugging the tabs will raise the electrical center beyond the housing. The engine electrical center bracket transfer can begin after you remove its four retaining bolts and extract the assembly from the fender. Position the engine electrical center bracket assembly on the front fender and fix it with 4 retaining bolts at 9 n.m (80 lb in). Line up the electrical center block stubs into slots and let the tabs secure it in position while you fasten wire connectors to its lower portion which requires bolt tightening at 9 n.m (80 lb in). Plug all wire connectors tightly into their respective positions before letting the electrical center block rest until the tabs snugly click in. Use Fuse location information to put on all fuses and relays before applying the cover then secure the lower part of the cover. After positioning the fender upper brace correctly you should tighten its 4 bolts to 25 n.m (18 lb ft). Begin the vehicle operation after reattaching the negative Battery Cable to validate that all elements operate correctly.