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 MANUALSGMC2022SIERRA 1500 SLT, 6.2L ENG VIN LREPAIR AND DIAGNOSISENGINE MECHANICALSTARTERBATTERY, STARTING SYSTEM AND CHARGING SYSTEM - DIAGNOSTIC INFORMATION AND PROCEDURES (1 OF 2)
2022 GMC Sierra 1500 SLT, 6.2L Eng VIN L
Battery, Starting System And Charging System - Diagnostic Information And Procedures (1 Of 2)
2022 GMC Sierra 1500 SLT, 6.2L Eng VIN LSECTION Battery, Starting System And Charging System - Diagnostic Information And Procedures (1 Of 2)
- Diagnostic Information and Procedures
- DTC B2B11
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC P0560-P0563
- DTC P058A-P058F
- DTC P0615, P0616, or P0617 (Except LM2)
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC P0621
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Diagnostic Aids
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC P0622
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC P0E32-P0E34
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing - Starter System Test
- Circuit/System Testing - T19 Multifunction Power Supply Converter Input/Output Circuit Test
- Repair Instructions
- DTC P0E37-P0E39
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing - Starter System Test
- Circuit/System Testing - T19 Multifunction Power Supply Converter Input/Output Circuit Test
- Repair Instructions
- DTC P1002
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC P129B or P129C
- DTC P1465 or P1466
- DTC P17DD-P17DF
- DTC P26E4-P26E6
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC P3051, P3053, or P3055
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing - Starter System Test
- Circuit/System Testing - T19 Multifunction Power Supply Converter Input/Output Circuit Test
- Repair Instructions
- DTC P3052, P3054, or P3056
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing - Starter System Test
- Circuit/System Testing - T19 Multifunction Power Supply Converter Input/Output Circuit Test
- Repair Instructions
- DTC P305D or P305E
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC P31C3
- DTC U3003
- DTC U3006-U3009
- DTC U3018, U3019, or U3501-U350A
- DTC U3023
- Proactive Alert Identifier SAC001
- Proactive Alert Identifier SAC002
- Proactive Alert Identifier SAC003
- Proactive Alert Identifier SAC004
- Proactive Alert Identifier SAC005
- Symptoms - Engine Electrical
- Symptoms - Stop/Start System
- Auxiliary Battery System Malfunction (9C1)
- Battery Inspection/Test
- Battery Charging
- DTC B2B11
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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.