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.
Circuit/System Verification
2019 Chevrolet Blazer Premier, FWDSECTION Circuit/System Verification
- Ignition - On/Vehicle - In Service Mode
- Verify no other DTCs are set.
- If other DTCs are set
- Go to next step: If no other DTCs are set
- Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
- Verify DTC B1024 is not set.
- If DTC B1024 is set
- Perform all necessary programming and setup procedures for the control module: Appropriate control module.
- Verify the DTC does not set.
- If the DTC sets
Replace the component: Appropriate control module.
- Go to next step: If the DTC does not set
- If the DTC sets
- Go to next step: If the DTC is not set
- All OK.
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.