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 MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISBODY & FRAMEWINDOWSDOOR SYSTEM, MIRROR SYSTEM & WINDOW SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC B3823: RIGHT REAR POWER WINDOW DOWN RELAY CIRCUITTEST DESCRIPTION
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Test Description
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Test Description
The numbers below refer to the step numbers on the diagnostic table.
- 2. Listen for an audible click when the right rear power window relay operates. Command both the ON and OFF states. Repeat the commands as necessary.
- 3. Tests for voltage at the coil side of the right rear power window down relay.
- 4. Verifies that the BCM is providing ground to the right rear power window down relay.
- 5. Tests if ground is constantly being applied to the right rear power window down relay.
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.