Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2012SUBURBAN 2WD V8-5.3LREPAIR AND DIAGNOSISSTARTING AND CHARGINGBATTERYBATTERY CABLEPOSITIVESERVICE AND REPAIRBATTERY POSITIVE CABLE REPLACEMENT
2012 Chevrolet Suburban 2WD V8-5.3L
Battery Positive Cable Replacement
2012 Chevrolet Suburban 2WD V8-5.3LSECTION Battery Positive Cable Replacement
Battery Positive Cable Replacement
Removal Procedure
1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection 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. Reposition 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 from the vehicle.
Installation Procedure
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 clips to the studs on the plenum front panel.
4. Install the generator battery jumper cable terminal (4) to the mega fuse stud.
Caution: Refer to Fastener Caution Fastener Caution.
5. Install the generator battery jumper cable to mega fuse nut (3).
Tighten the nuts to 9 Nm (80 lb in).
6. Install the mega fuse cover.
7. Install the positive battery cable connector (1) to the UBEC.
8. Ensure the junction block retainers are in the open position (1).
9. 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).
10. Install the under hood junction block cover.
11. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection Battery Negative Cable Disconnection and Connection.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.