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 MANUALSGMC2013SIERRA DENALI 2WD V8-6.2LREPAIR AND DIAGNOSISSTARTING AND CHARGINGCHARGING SYSTEMALTERNATORSERVICE AND REPAIRAUXILIARY GENERATOR REPLACEMENT (KD9)
2013 GMC Sierra Denali 2WD V8-6.2L
Auxiliary Generator Replacement (KD9)
2013 GMC Sierra Denali 2WD V8-6.2LSECTION Auxiliary Generator Replacement (KD9)
Auxiliary Generator Replacement (KD9)
Removal Procedure
Warning:
Refer to Battery Disconnect Warning Service Precautions.
1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (TP2) Battery Negative Cable Disconnection and Connection (TP2)Battery Negative Cable Disconnection and Connection (Single Battery) Battery Negative Cable Disconnection and Connection (Single Battery).
2. Remove the upper fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement (Diesel) Service and RepairEngine Coolant Fan Upper Shroud Replacement (Mechanical) Service and Repair.
3. Remove the drive belt. Refer to Drive Belt Replacement .
4. Disconnect the auxiliary generator electrical connector (1).
5. Slide the protective boot cover (2) down the positive battery cable.
6. Remove the B+ positive battery cable nut (3) and terminal (4) from the back of the auxiliary generator.
7. Remove the auxiliary generator bolts (1).
8. Remove the auxiliary generator (2).
Installation Procedure
1. Position the auxiliary generator (2).
Caution:
Refer to Fastener Caution Fastener Caution.
2. Install the auxiliary generator bolts (1) and tighten to 50 Nm (37 lb ft).
3. Install the battery positive cable terminal (4) to the auxiliary generator and tighten nut (3) to 10 Nm (89 lb in).
4. Connect the generator electrical connector (1).
5. Install the drive belt. Refer to Drive Belt Replacement .
6. Install the upper shroud. Refer to Engine Coolant Fan Upper Shroud Replacement (Diesel) Service and RepairEngine Coolant Fan Upper Shroud Replacement (Mechanical) Service and Repair.
7. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection (TP2) Battery Negative Cable Disconnection and Connection (TP2)Battery Negative Cable Disconnection and Connection (Single Battery) Battery Negative Cable Disconnection and Connection (Single Battery).
RENDER: 1.0x
NO RELATED
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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.