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 MANUALSCHEVROLET2011TAHOE BASE, 5.3 0, 4WDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTINFOTAINMENTCELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESVIDEO ENTERTAINMENT SYSTEM MALFUNCTION (Z75)CIRCUIT/SYSTEM TESTING
2011 Chevrolet Tahoe Base, 5.3 0, 4WD
Circuit/System Testing
2011 Chevrolet Tahoe Base, 5.3 0, 4WDSECTION Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the appropriate DVD display.
- Test for less than 5.0 ohms between the ground circuit terminals listed below and ground.
- Ground terminal 6
- Ground terminal 5 (DNU)
- If greater than specified range, test the ground circuit for an open/high resistance.
- Ignition ON, DVD playing, test for B+ between the entertainment remote enable B+ circuit terminal 8 and ground.
- If less than specified value, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio.
- Ignition ON, test for B+ between the battery positive voltage circuit terminal 7 and ground.
- If less than specified value, test the voltage supply circuit for a short to ground or an open/high resistance.
- Ignition ON, DVD playing, test for 1-8 volts between the video bright control circuit terminal 9, and ground.
- If greater then specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the radio.
- If less then specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio.
- Ignition ON, DVD playing, test for 40 mV -3.0 volts between the video mode signal circuit terminal 10, and ground.
- If greater then specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
- If less then specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio.
- Ignition OFF, disconnect the appropriate harness connector at the radio.
- Front Display - X3
- Rear Display (DNU) - X2
- Test for less than 5 ohms between the DVD display terminal 1 and the approriate radio harness connector terminal.
- Front Display -X3 terminal 7
- Rear Display (DNU) - X2 terminal 4
- If greater than specified range, test the ground circuit for an open/high resistance.
- If all circuits test normal, replace the DVD display.
- Ignition ON, DVD playing, verify the DVD display operates normally.
- If the DVD display does not operate normally, replace the radio.
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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.