Battery Positive Cable Replacement 4.8L, 5.3L, 6.0L, and 6.2L

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
2. Remove the under hood junction block cover.



3. Lift the junction block retainers from the locked position (3) and rotate the retainers to the open position (1).
4. Remove the junction block.



5. Remove the positive battery cable connector (1) from the underhood bussed electrical center (UBEC).



6. Remove the mega fuse cover.



7. Remove the generator battery jumper cable to mega fuse nut (3).
8. Remove the generator battery jumper cable terminal (4) from the mega fuse stud.



9. Remove the positive battery cable channel from the studs on the plenum front panel.
10. Remove the positive battery cable clips from the studs on the plenum front panel.



11. Remove the positive battery cable terminal from the mega fuse stud.
12. Remove the positive battery cable channel from the studs.
13. Remove the positive battery cable from the vehicle.

1. Install the positive battery cable to the vehicle.
2. Install the positive battery cable terminal to the mega fuse stud.



3. Install the positive battery cable channel at the plenum front panel.
4. Install the positive battery cable clips to the studs on the plenum front panel.



5. Install the generator battery jumper cable terminal (4) to the mega fuse stud.

Notice: Refer to Fastener Notice in the Preface section.

6. Install the generator battery jumper cable to mega fuse nut (3).

Tighten
Tighten the nuts to 9 N·m (80 lb in).




7. Install the mega fuse cover.



8. Install the positive battery cable connector (1) to the UBEC.



9. Ensure the junction block retainers are in the open position (1).
10. Position and align the junction block to the 4 bracket pivots (2), once the pivots are engaged, push the retainer down into the locked position (3).



11. Install the under hood junction block cover.
12. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .

Battery Positive Cable Replacement 6.6L

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
2. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
3. Remove the underhood junction block cover.



4. Lift the junction block retainers from the locked position (3) and rotate the retainers to the open position (1).
5. Reposition the junction block.



6. Remove the positive battery cable connector (1) from the underhood bussed electrical center (UBEC).



7. Disconnect the positive battery cable (1) from the glow plug control module.



8. Remove the mega fuse cover.



9. Remove the positive battery cable to mega fuse nuts (1).
10. Remove the positive battery cable terminals from the mega fuse studs.



11. Remove the positive battery cable clip nuts (2) from the studs on the plenum front panel.
12. Remove the positive battery cable clip (1) from the stud on the plenum front panel.



13. Remove the positive battery cable clips (1) from the studs on the plenum front panel.
14. Remove the positive battery cable from the vehicle.

1. Install the positive battery cable to the vehicle.
2. Install the positive battery cable clips (1) onto the studs on the plenum front panel.



3. Install the positive battery cable clip (1) onto the stud on the plenum front panel.

Notice: Refer to Fastener Notice in the Preface section.

4. Install the positive battery cable clip nuts (2) to the studs on the plenum front panel.

Tighten
Tighten the nuts to 3 N·m (27 lb in).




5. Install the positive battery cable terminals onto the mega fuse studs.
6. Install the positive battery cable to mega fuse nuts (1).

Tighten
Tighten the nuts to 7.5 N·m (66 lb in).




7. Install the mega fuse cover.



8. Connect the positive battery cable (1) to the glow plug control module.



9. Install the positive battery cable connector (1) to the UBEC.



10. Ensure that the junction block retainers are in the open position (1).
11. Position and align the junction block to the 4 bracket pivots (2), once the pivots are engaged, push the retainers down into the locked position (3).



12. Install the underhood junction block cover.
13. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .
14. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .

Battery Positive Cable Replacement 4.3L

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
2. Remove the under hood junction block cover.



3. Lift the junction block retainers from the locked position (3) and rotate the retainers to the open position (1).
4. Remove the junction block.



5. Remove the positive battery cable connector (1) from the underhood bussed electrical center (UBEC).



6. Remove the mega fuse cover.



7. Remove the starter solenoid cable nut (2) from the mega fuse.
8. Remove the starter solenoid cable (1) terminal from the mega fuse stud.



9. Remove the positive battery cable channel from the studs on the plenum front panel.
10. Remove the positive battery cable clips from the studs on the plenum front panel.



11. Remove the positive battery cable terminal from the mega fuse stud.
12. Remove the positive battery cable channel from the studs.
13. Remove the positive battery cable from the vehicle.

1. Install the positive battery cable to the vehicle.
2. Install the positive battery cable terminal to the mega fuse stud.



3. Install the positive battery cable channel at the plenum front panel.
4. Install the positive battery cable clips to the studs on the plenum front panel.



5. Install the starter solenoid cable (1) terminal to the mega fuse stud.

Notice: Refer to Fastener Notice in the Preface section.

6. Install the starter solenoid cable nut (2) to the mega fuse.

Tighten
Tighten the nut to 9 N·m (80 lb in).




7. Install the mega fuse cover.



8. Install the positive battery cable connector (1) to the UBEC.



9. Ensure the junction block retainers are in the open position (1).
10. Position and align the junction block to the 4 bracket pivots (2), once the pivots are engaged, push the retainer down into the locked position (3).



11. Install the under hood junction block cover.
12. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .