Express 4500 V8-6.0L (2010)
7. Completely loosen the junction block caged bolts (2).
8. Release the tabs that retain the junction block (1) to the junction block base.
9. Remove the junction block (1) from the block base.
10. Remove the junction block base nuts (1, 3).
11. Remove the wiring harness (4) from the junction block base (2).
12. Remove the junction block base (4) from the floor.
Installation Procedure
1. Install the wiring harness (2) to the junction block base (3).
2. Install the junction block base (3) to the floor studs.
Ensure the remaining electrical connections (4, 5) are not captured under the junction block base after installations the floor studs.
Caution: Refer to Fastener Caution (See: Service Precautions/Vehicle Damage Warnings/Fastener Caution).
3. Install the junction block base nuts (1) to the floor studs and tighten to 5 Nm (44 lb in).
