The APSUB-GM61 provides a 2-channel non-fading output for use with an aftermarket amplifier and subwoofer. Using the full range, fixed level head unit output, in conjunction with MOST data, the APSUB-GM61 delivers a variable 5v RMS pre-amp output with bass equalization and level control capabilities. The signal has a 350Hz / 24dB Linkwitz-Riley low pass filter applied. A data controlled remote amplifier turn on wire is also provided by the APSUB-GM61.

Compatibility Notes:

• Must have Infotainment system RPO code IO5 or IO6 to be compatible.
  
• To verify the "IO" RPO code on your vehicle, check the glove compartment or spare tire well for a silver sticker with these codes. If this sticker is not present, you must scan the QR code on the GM label found in the driver's door jamb. The RPO codes will be listed in alphabetical order in either scenario.

Important Notes:

• This interface is compatible in vehicles with or without Bose that are equipped with IO4, IO5 or IO6 model radios.
  
• In some non-Bose radios, there may be absence of audio from the left channel when in AM, FM, and XM sources. The APSUB-GM61 is capable of providing a work-around by passing the right channel audio through the left and right channels when in the AM, FM and XM sources. All other sources will still offer left and right separation. See the troubleshooting section on page 6 for additional details.
  
• If originally equipped, the factory amplifier must remain in the vehicle, and connected after the APSUB-GM61 has been installed.
  
• The remote output is rated at 2A of current. If more current is needed, an external relay must be used.
  
• When the bass level control knob is not connected to the APSUB-GM61, the output level will default to 100%.
  
• The level control knob must be connected in order to manually adjust the minimum volume settings.
  
• The minimum volume level is set to a default value. If you are happy with this level in your particular application, then additional adjustment is not required. Please refer to the Setup and Configuration section on page 2 for more details.
  
• The factory radio's speed controlled volume and surround sound mode are not supported by the APSUB-GM61 outputs.
  
• No adjustments can be made manually using the programming button or the factory SWC when the module is connected to a PC.
  
• If the vehicle is equipped with Active Noise Cancellation (ANC), the ANC can be disabled using the included ANC-GM03 harness. See page 3.

Shipping Policy

DBs Car Audio is proud to offer fast & free shipping on all items listed in our store!!

Shipping Methods and Transit Times

DBs Car Audio ships orders from our Kissimmee, Florida location. On occasion, orders will be fulfilled directly by the manufacturer or distributor in order to reduce the shipping time..

Order Tracking

Once an order has been shipped, we send our customers an email with the tracking number for the order. Click on the tracking link in the email to follow the location of the package on the carrier's website. If you did not receive a tracking number by email or need to confirm the tracking information, please contact call us at 1-800-927-9390

Signature Required

Due to the valuable contents of some shipments, DBs Car Audio will only require a signature upon delivery if the order is over $500. Such guidelines will not be overruled upon the customer's request. Please understand that this is a security measure taken by our Company to ensure the safe delivery of each package and guarantee excellent service. Many of our third-party shipping carriers and payment companies require signatures upon delivery to protect against fraud and theft. Customers may request a signature upon delivery by emailing us at dbscaraudiofl@gmail.com.

Shipping Policy Disclaimer

Delivery estimates do not apply to items shipped directly from the manufacturer, nor out-of-stock items. Some items that ship from the manufacturer can only be delivered to addresses within the 48 continental states.

Standard delivery time for domestic customers will average from 2-4 business days, but can take longer in some cases. Saturday, Sunday and national holidays are not considered business days for delivery purposes.

Our Shipping Guarantee applies only to shipments delayed due to our service failure. We will not guarantee shipments that are delayed due to an act of god (ex: weather), a catastrophic event, or failure by our delivery partners. Our guarantee is also voided if incorrect billing or shipping information is given and results in your order being delayed to its destination. Our guarantee is also void if no one is available to sign for shipment when delivery attempt is made if a signature is required.