Sierra 1500 2WD V8-5.3L Hybrid (2004)
Tighten
Tighten the nuts to 10 N.m (89 lb in).
3. Connect the battery cut-off switch electrical connector (3).
4. If a NEW switch was installed, use a scan tool and command the battery cut-off switch to the closed position.
5. Install the ESB intermediate cover.
Energy Storage Box (ESB) Fan Replacement (With RPO Code HP2)
ENERGY STORAGE BOX (ESB) FAN REPLACEMENT (WITH RPO CODE HP2)
REMOVAL PROCEDURE
1. Remove the energy storage box (ESB) fuse power cable.
2. Remove the ESB power cable-battery 2 to battery 3.
3. Disconnect the outlet duct from the ESB duct.
4. Disconnect the battery vent tube from the fan duct.
5. Disconnect the fan electrical connector.
6. Remove the fan screws.
7. Remove the push pin fasteners.
8. Remove the screws attaching the air duct hose to the ESB.
9. Remove the fan and air duct hose.
10. If necessary, remove the screws (1) attaching the air duct hose (2) to the fan (3).
11. If necessary, remove the air duct hose (2) from the fan (3).
INSTALLATION PROCEDURE
