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 MANUALSBUICK2006TERRAZA CXL, 3.5 L, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 252 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESNOISE COMPENSATED VOLUME INOPERATIVE
2006 Buick Terraza CXL, 3.5 L, AWD
Noise Compensated Volume Inoperative
2006 Buick Terraza CXL, 3.5 L, AWDSECTION Noise Compensated Volume Inoperative
WARNING: This page is about a different car, the 2007 Chevrolet Monte Carlo and 2007 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
Noise Compensated Volume Inoperative
| Step | Action | Value | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Radio/Navigation System Schematics Connector Reference: Entertainment/Communication Connector End Views |
||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 |
|
- | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 3 |
|
8 V | Go to Step 4 | Go to Step 5 |
| 4 | Replace the OnStar microphone.. Did you complete the replacement? |
- | Go to Step 9 | - |
| 5 | Test the noise compensation microphone supply voltage circuit for an open or short. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
- | Go to Step 9 | Go to Step 6 |
| 6 | Test the drain wire circuit for an open or short. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
- | Go to Step 9 | Go to Step 7 |
| 7 | Inspect for poor connections at the amplifier. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
- | Go to Step 9 | Go to Step 8 |
| 8 | Replace the amplifier. Refer to Control Module References
. Did you complete the repair? |
- | Go to Step 9 | - |
| 9 | Operate the system in order to verify the repair. Did you correct the condition? |
- | System OK | Go to Step 3 |
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.