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NHTSA ID Number: 10070569
Manufacturer Communication Number: PIT4915D
Summary
Customers complain that their subwoofer is inoperative. Models with a 4 cylinder engine are equipped with an Active Noise Cancellation (ANC) system. ANC system works with the vehicle’s audio system to cancel out torque converter clutch (TCC) noise.
Condition/Concern
Some customers with a 2.4L engine and RPO UW6 may complain that their subwoofer is inoperative. Equinox and Terrain models with a 4 cylinder engine are equipped with an Active Noise Cancellation (ANC) system – which works to reduce the amount of noticeable noise at certain vehicle speeds. The ANC system works with the vehicle’s audio system to create sound waves that cancel out torque converter clutch (TCC) noise.
12 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| CHEVROLET | EQUINOX | 2010-2015 |
| GMC | TERRAIN | 2010-2015 |
1 Associated Document
Service Bulletin Document
Bulletin No.: PIT4915D
Date: December, 2014
https://www.nhtsa.gov/recalls?nhtsaId=10070569
SB-10070569-0335.pdf 221.117KB
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NHTSA ID Number: 10062894
Manufacturer Communication Number: PIT4915C
Summary
SUMMARY TO BE PROVIDED ON A FUTURE DATE.
1 Associated Document
Service Bulletin Document
Bulletin No.: PIT4915C
Date: April, 2013
https://www.nhtsa.gov/recalls?nhtsaId=10062894
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- Experience High-Quality Sounds: Complete kit for your car's sound system with the 12-inch dual loaded car subwoofer with sub enclosure
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- Low Pass Filter: 50Hz - 150Hz, Bass Boost: 0 - 12dB @ 45Hz, Built-in Sub-Acoustic Filter Load @ 20Hz, Total Harmonic Distortion (THD): < 0.4%, Rated Fuse: 25A, Peak Power: 800 Watts, RMS Power Handling: 220 Watts, Impedance: 4 Ohms
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SEOCONTENT-START
Service Bulletin File in Section: – Bulletin No.: PIT4915D Date: December, 2014 PRELIMINARY INFORMATION Subject: Normal Characteristic – Sub-woofer Is Inoperative With a 2.4L Engine With RPO UW6 Models: 2010 – 2015 Chevrolet Equinox 2010 – 2015 GMC Terrain with 6 Speaker System (RPO UW6) This PI was superseded to update Model Years. Please discard PIT4915C. The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Condition/Concern Some customers with a 2.4L engine and RPO UW6 may complain that their subwoofer is inoperative. Equinox and Terrain models with a 4 cylinder engine are equipped with an Active Noise Cancellation (ANC) system – which works to reduce the amount of noticeable noise at certain vehicle speeds. The ANC system works with the vehicle’s audio system to create sound waves that cancel out torque converter clutch (TCC) noise. Recommendation/Instructions On a vehicle with a 2.4L and RPO UW6 which is a 6 speaker system, the subwoofer is only used for the Active Noise Cancellation (ANC). This speaker is not used to play any audio from the any of the radio sources. Note: Do NOT block the cargo area speaker for optimal ANC performance. Customer Information Please communicate to the customer this condition is a normal operating characteristic of their vehicle. It will not impact the designed performance or reliability of the vehicle. Please share this information with the customer, including a copy of this message. Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
SEOCONTENT-END