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 MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 779 (AUDIO SYSTEM)SELF-DIAGNOSTIC FUNCTIONRECEPTION LEVEL INDICATION (PUSH AND HOLD 5 SEC. FM/AM BUTTON) (EXCEPT DX MODEL)
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Reception level indication (Push and hold 5 sec. FM/AM button) (Except DX model)
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Reception level indication (Push and hold 5 sec. FM/AM button) (Except DX model)
WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic screen checks the radio reception level. This level then can be used to diagnose the radio reception quality. The reception level is displayed in decibels (dB).
Preparation:
- Park the vehicle outdoors in a location with good radio reception.
- Tune to a powerful local FM radio station, then write down the radio station number.
- Tune to a powerful local AM radio station, then write down the radio station number.
- Enter the reception level indication mode in the self-diagnostic function. The AM/FM antenna amplifier is on and the character (A) is not displayed in the audio display.
- Tune to the FM radio station you wrote down in preparation using the SEEK button ( ↔↔ ), and note the decibel level of that station.
- Press and release the RDM/A.SEL button to turn the AM/FM antenna amplifier off (A is now displayed in the audio display).
- Note the decibel level of that station.
- Press and release the RDM/A.SEL button to turn the AM/FM antenna amplifier back on (A is not displayed in the audio display).
- Press and hold the AM/FM button for more than 5 seconds to enter the AM reception mode.
- Tune to the AM radio station you wrote down in preparation using the SEEK button ( ↔↔ ), and note the decibel level of that station.
- Press and release the RDM/A.SEL button to turn the antenna amplifier off (A is now displayed in the audio display).
- Note the decibel level of that station.
- Press and release the RDM/A.SEL button to turn the AM/FM antenna amplifier back on (A is not displayed in the audio display).
- Turn the ignition switch to LOCK (0), or audio unit off to exit the test mode.
- Compare your results to a known-good vehicle, (make sure it is the same year and trim level) in the same location and direction, and under the same environmental conditions.
- If the reception level is within 10% of the known-good vehicle, no repair is needed at this time.
- If the reception level is at least 10% less than the known-good vehicle, go to Poor AM or FM Reception troubleshooting (see POOR AM OR FM RADIO RECEPTION OR INTERFERENCE (WITHOUT NAVIGATION) ).
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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.