OEM Buick Rainier Fuse Box

Buick Rainier Fuse Box Parts and Q&A

• Fuse Box
  25925580
  Q: How to replace the underhood fuse box on Buick Rainier?

  A:

  The first step to replace the underhood electrical center or junction block requires removing the negative Battery Cable. Open the junction block cover by equally pushing tabs downward followed by lifting it off. Pull upward at the fuse relay center cover to unhinge its retainers before removal. The location of each harness end bolt needs to be noted then those bolts need to be removed so harness ends can be detached from the fuse relay center. Unbolt the fuse relay center from its position then take out the fuse relay center from the junction block bracket. Separate the wiring harness ends from the bottom of the fuse relay center by pulling downwards before you remove the retaining bolts of the junction block bracket in order to take out the bracket from the vehicle. Set the junction block bracket in position before securing bolts with a torque of 6 n.m and an amount of 53 lb in. After alignment of the wiring harnesses you should install the fuse relay center by securing it with bolts tightened at 6 n.m (53 lb in). Use the harness end bolts to attach the parts before setting the fuse relay center cover over the relay center bolts and pressing for tab engagement. Pressing down on the junction block cover will finish the installation process by engaging its tabs.
• Fuse Box
  15141559
  Q: How to replace the rear Fuse Box on Buick Rainier?

  A:

  The replacement of the rear electrical center or junction block starts with disconnecting the negative Battery Cable. The left second row seat removal procedure differs between chevrolet trailblazer ext or gmc envoy xl models where you must eliminate the seat but chevrolet trailblazer or gmc envoy models need seat adjustment to cargo position. Begin by removing the rear electrical center cover together with the battery feed terminal nut from the junction block. The Body Control Module (BCM) must be removed from the rear electrical center before using tools to loosen fully the 3 bolts that retain the junction block to electrical connectors and to release the tabs that hold the junction block to the base. All junction block connections start with removing the Instrument Panel Harness Connector and the mobile telephone harness connector and the Body Wiring Harness Connector and the headliner harness connector and finally the console harness connector . Use a socket set to remove floor stud retaining nuts from the block base until the base can be withdrawn from its position on the floor panel. To mount the block base properly position it on floor studs while securing it with retaining nuts at 10 n.m (88 lb in). The installation calls for connecting the Instrument Panel Harness Connector with the mobile telephone harness connector and Body Wiring Harness Connector and headliner harness connector and console harness connector to the block base. Place the junction block onto the block base while ensuring both retaining tabs are fully engaged and fasten it with three bolts which should be tightened to 3.5 n.m (31 lb in). Connect the battery feed terminal nut to the junction block while tightening it to 10 n.m (88 lb in). Replace the rear electrical center cover and settle the left second row seat as a passenger space for chevrolet trailblazer and gmc envoy or reattach the left second row seat for chevrolet trailblazer ext and gmc envoy xl. Finish by connecting the battery negative cable.