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OS-311B Radio Replacement Interface for Select 2004-09 GM with OnStar

  • $132.98
Market price: $179.95, you save $46.97
-26%
PAC OS-311B Radio replacement for GM with Bose and Onstar
Score: 4.50 (votes: 2)
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  • Net weight
    1.5 lbs
  • Part Number
    OS-311B
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PAC OS-311B (formerly Peripheral GMAHLAN2L11) (ver. 1.4.6a) is a plug-n-play OnStar® and LAN 11-bit Data-Bus interface that allows seamless integration of aftermarket radios in select 2005-09 GM Vehicles equipped with both OnStar® and Bose® factory amplified systems. Replacing the factory radio in these vehicles without the proper interface means that you will lose Onstar and other important features such as audible turn signal, warning chimes etc. The OS-311B has on board switching to allow audio from the OnStar® system to play through the two front factory speakers when OnStar® is active and will mute the aftermarket stereo. Retains all warning chimes, maintains audible blinker indicators and provides +12V R.A.P (Retained Accessory Power) output circuit. For additional vehicle integration, use the SWR-IC Steering wheel control interfaces to retain use of the steering wheel controls with the new aftermarket radio. If not retaining the OnStar system, use the OS-311 instead.

» Maintains OnStar® System.
» Mutes Radio When OnStar® is Active
» OnStar® Audio Plays through Front Factory Speakers.
» Data Controlled RAP Accessory Output
» Retains Vehicle Warning Chimes
» New radio will operate with the vehicle RAP (Retained Accessory Power) system. The radio stays on after the key is turned off.
» Retains rear audio controls and rear headphone jacks
Click here for INSTALLATION MANUAL/DIAGRAM. Click the pull-down menu below for a list of compatible vehicles.
Package Contents
» OS-311B main module x1
» CM-X Chime module x1
» OS-LAN24b harness x1
» C4 harness for center channel/subwoofer x1
» Main harness with relay x1
» BAA20 Antenna adapter x1
» installation manual and diagram x1


1. The OS-311B does not retain the factory XM receiver. You will lose this factory option.
2. Use the OS-311B even if the vehicle does not have OnStar® but need to retain factory chimes and RAP function or use the 0S-311.


DISCLAIMER: Under no circumstances shall the manufacturer or the distributors (Discount Car Stereo Inc) of the OS-311B parts be held liable for consequential damages sustained in connection with the OS-311B. The manufacture and it’s distributors (Discount Car Stereo Inc) will not, nor will they authorize any representative or any other individual to assume obligation or liability in relation to the OS-311B other than its replacement.

Defective returns:
Our return policy differs from than of other online merchants and we encourage all customer to read our Return policy page it in its entirety prior to ordering.
Defective returns are eligible for warranty repair or replacement service: Within the first 10 days, Discount Car Stereo will replace any defective or damaged part and provide a pre-paid return label (US Customers only). (Pre-paid labels are not issued for other return reasons).
After 10 days of receipt, customer covers return shipping cost, however we cover shipping cost to supplier/manufacturer, and to ship replacement back to you. If original purchase can't be replaced (discontinued etc), we reserve the right to provide a substitute part of higher or equal value. Any claims for missing parts must be made within 7 days of delivery.
We strive to avoid costly returns by providing our customer with as much product information and applications. Click to read the full return policy page.

Gone are the days when customer had to call or email to obtain shipping rates. At Discount Car Stereo.com, shipping rates are automated and calculated in real time based on cart contents, weight and destination. To get a shipping quote simply add items to cart, follow the checkout process by filling address details and in seconds the online shipping calculator provides real time rates and shipping methods. We ship throughout the USA, Canada and select international destinations (See country drop-down in checkout page for list of international countries or visit our Frequent ask questions page).
Our family owned and operated specialty store makes every effort to get your order processed and shipped at soon as possible; however any products with this logo requires assembly and additional time (usually 2-3 days) is requires to assemble and then shipped using shipping method selected at checkout. Selecting a faster shipping method does not guarantee quicker assembly process, but does speed up delivery.
90% of our products requires assembly and identified with "this logo" in image areas of the product page.
Delivery time for in stock products requiring assembly= Assembly time (1-3 days) + transit time (your shipping method).
Example: Order our very popular Corvette Bluetooth A2DIY-C5 and choose "USPS Priority Mail (2-4 days) shipping. Expect delivery 5-7 business days after order placement.
Please contact us first regarding time sensitive deliveries.
Parts not requiring assembly or customization (off-the-shelf), These usually ship within 24 hours.
Tracking information is sent to your email upon labeling. Customers accounts are also updated at the same time. All customers (with or without accounts) can check order status online which has the same details available to our staff.
Except for Priority Mail Express® (Overnight Delivery*), USPS delivery times for Priority Mail® and First-Class Mail® are estimates and are not guaranteed; however these are delivered to most states after 2-7 working days.
International orders require additional paperwork and processing time prior to shipping (usually 4 days).
Free shipping (when available); applies to US only

*with a money-back guarantee

USA/Canada: Pay with Visa, MasterCard, American Express, Discover, PayPal: PayPal, PayPal Credit, Venmo. Gift cards that display Visa, MasterCard, American Express and Discover logos are also accepted.
Customer billing information (first name, last name, billing address, and credit card information) must be entered exactly as it appears on credit card statement otherwise transaction will decline. Once order is placed a pending authorization (not a charge) will appear on your account and removed within 7-10 business days or once authorization has been charged and order shipped.
International: Select PayPal to pay with card. International credit cards are NOT accepted unless registered through PayPal. Click here to learn more about PayPal.
All prices are in U.S. dollars. The actual price charged to International customers is subject to the exchange rate applied by PayPal.

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