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 MANUALSCHEVROLET2011SILVERADO 1500 4WD V8-6.2LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTECHNICAL SERVICE BULLETINS
2011 Chevrolet Silverado 1500 4WD V8-6.2L
Computers and Control Systems: Technical Service Bulletins
2011 Chevrolet Silverado 1500 4WD V8-6.2LSECTION Technical Service Bulletins
- Customer Interest
- Engine Controls - MIL ON, DTC P2135, Reduced Engine Power
- Engine Controls - MIL ON/DTC P2135 Set
- Restraint System - Repeat DTC's/Air Bag Warning Lamp On
- Engine - MIL ON P0116/P1400 Set In Very Cold Temps
- Electrical - Electrical Malfunction/Multiple DTCs
- Electrical - MIL ON/DTC's Set By Various Control Modules
- Wheels/Tires - Module Programming For 20/22 Inch Wheels
- Electrical - Intermittent MIL/DTC P2138/Reduced Power
- Body Controls - BCM Update For Bulb Outage Detection
- By Symptom
- Abnormal wear/deterioration
- Customer Interest
- Engine Controls - MIL ON, DTC P2135, Reduced Engine Power
- Engine Controls - MIL ON/DTC P2135 Set
- Restraint System - Repeat DTC's/Air Bag Warning Lamp On
- Engine - MIL ON P0116/P1400 Set In Very Cold Temps
- Electrical - Electrical Malfunction/Multiple DTCs
- Electrical - MIL ON/DTC's Set By Various Control Modules
- Wheels/Tires - Module Programming For 20/22 Inch Wheels
- Electrical - Intermittent MIL/DTC P2138/Reduced Power
- Body Controls - BCM Update For Bulb Outage Detection
- All Technical Service Bulletins
- Electrical - Aftermarket Interface Devices Causing Issues
- Engine Controls - Non-GM Engine/Transmission Calibration ID
- Engine Controls - MIL ON, DTC P2135, Reduced Engine Power
- Engine Controls - MIL ON/DTC P2135 Set
- Engine - THIS BULLETIN HAS BEEN CANCELED
- Restraint System - Repeat DTC's/Air Bag Warning Lamp On
- Audio - Personal Audio Link (PAL) Charging of iPod
- A/T Controls - Snapshot Data With Tech2(R) Information
- Engine - Sound Change In 3 or 4 Cylinder Mode
- Engine - MIL ON P0116/P1400 Set In Very Cold Temps
- Electrical - Electrical Malfunction/Multiple DTCs
- Electrical - MIL ON/DTC's Set By Various Control Modules
- Wheels/Tires - Module Programming For 20/22 Inch Wheels
- Electrical - Intermittent MIL/DTC P2138/Reduced Power
- Body Controls - Body Control Module (BCM) Grounds
- Body Controls - BCM Update For Bulb Outage Detection
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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.