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 MANUALSCHEVROLET2019EXPRESS 2500 BASE, VAN CARGO EXTENDED, 6.0L ENG VIN GREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 15 (DRIVER ASSISTANCE SYSTEMS)DIAGNOSTIC INFORMATION AND PROCEDURESSIDE BLIND ZONE ALERT SYSTEM MALFUNCTIONCIRCUIT/SYSTEM VERIFICATION
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G
Circuit/System Verification
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION Circuit/System Verification
WARNING: This page is about a different car, the 2018 GMC Savana 3500, 2018 GMC Savana 2500, 2018 Chevrolet Express 3500, and 2018 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition/Vehicle - Off
- Ignition - On / Vehicle - In Service Mode
- Verify the component turns On and Off:
- Side Blind Zone Alert Indicator@A9A Outside Rearview Mirror - Driver
- Side Blind Zone Alert Indicator@A9B Outside Rearview Mirror - Passenger
- If the component does not turn On and Off
Refer to:DTC B094D or B094E
- Go to next step: If the component turns On and Off
- Verify that no DTCs are set.
- If any DTC is set
Refer to:Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code DTC List - Vehicle
- Go to next step: If no DTC is set
- If any DTC is set
- Verify the following control modules contain the latest software:B218L Side Object Sensor Module - Left
- If not the latest software is contained
Program the control module:B218L Side Object Sensor Module - Left
- Go to next step: If the latest software is contained
- If not the latest software is contained
- All OK.
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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.