1. Киришүү
The PAC OS-2X Radio Replacement Interface is designed to allow the installation of an aftermarket radio into select General Motors (GM) Class II vehicles while retaining essential factory features. This interface ensures the continued functionality of OnStar, warning chimes, and other vehicle-specific features that would otherwise be lost when replacing the factory radio.
This manual provides detailed instructions for the proper installation, operation, and maintenance of your PAC OS-2X interface. Please read all instructions thoroughly before beginning installation.

Figure 1: PAC OS-2X Radio Replacement Interface module and associated wiring harness. This image shows the main components included in the package, highlighting the interface module and the various connectors for vehicle and aftermarket radio integration.
2. Коопсуздук маалыматы
- Кыска туташуулардын жана бузулуулардын алдын алуу үчүн, ар дайым электр жабдууларын орнотууну баштоодон мурун, унаанын терс батарея терминалын сууруп салыңыз.
- Электр зымдарынын кыска туташуусунун алдын алуу үчүн бардык туташуулардын бекем жана тийиштүү түрдө изоляцияланганын текшериңиз.
- Белгилүү электр схемаларын жана демонтаждоо нускамаларын алуу үчүн унааңыздын тейлөө нускамасынан караңыз.
- If you are unsure about any part of the installation process, consult a qualified car audio technician.
- Do not modify the interface module or wiring harness. Unauthorized modifications can void the warranty and cause damage.
- Keep the interface module away from moisture and extreme temperatures.
3. Пакеттин мазмуну
Орнотууну улантуудан мурун, бардык элементтердин бар экендигин текшериңиз:
- PAC OS-2X Interface Module
- Унаага тиешелүү зым байламтасы
- Aftermarket Radio Connection Harness
- Колдонуучунун Колдонмосу (бул документ)
4. Орнотуу жана алдын ала орнотуу
- Колдонмону окуу: Thoroughly read this instruction manual and your aftermarket radio's manual before starting.
- Куралдар чогултуу: Collect necessary tools such as wire strippers, crimpers, electrical tape, multimeter, and panel removal tools.
- Батареяны ажыратыңыз: Унаанын аккумуляторунун терс терминалын ажыратыңыз.
- Завод радиосун алып салуу: Carefully remove the factory radio from the dashboard. Refer to your vehicle's service manual for specific instructions.
- Унаанын зымдарын аныктоо: Familiarize yourself with the vehicle's factory wiring harness.
5. Орнотуу боюнча нускамалар
Follow these steps carefully to install the PAC OS-2X interface:
- Connect Aftermarket Radio Harness: Connect the wires from the aftermarket radio's harness to the corresponding wires on the PAC Aftermarket Radio Connection Harness. Match wire colors and functions (e.g., constant 12V, accessory 12V, ground, speaker wires). Solder and heat shrink, or use high-quality crimp connectors for secure connections.
- Connect Vehicle Specific Harness: Plug the PAC Vehicle Specific Wiring Harness into the factory radio harness connectors in the vehicle's dashboard.
- Connect Interface Module: Plug the Aftermarket Radio Connection Harness and the Vehicle Specific Wiring Harness into the PAC OS-2X Interface Module. Ensure all connectors are fully seated.
- Connect Antenna Adapter (if required): If your aftermarket radio requires an antenna adapter, connect it now.
- Connect Steering Wheel Control (SWC) (if applicable): If your aftermarket radio supports steering wheel controls and you wish to retain them, connect the SWC output wire from the PAC module to the SWC input of your aftermarket radio. Refer to your radio's manual for specific SWC wiring.
- Сыноо функциясы: Before reassembling the dashboard, temporarily reconnect the vehicle's negative battery terminal. Turn on the ignition and test the aftermarket radio's basic functions (power, sound, fader/balance). Verify that OnStar functionality and all warning chimes are working correctly.
- Коопсуз компоненттер: Once all functions are verified, disconnect the battery again. Secure the PAC OS-2X module and all wiring harnesses behind the dashboard, ensuring they do not interfere with any moving parts or pinch points.
- Башкаруу панелин кайра чогултуу: Reinstall the aftermarket radio and reassemble the dashboard components.
- Батареяны акыркы туташтыруу: Терс батарея терминалын кайра туташтырыңыз.
6. Операция
The PAC OS-2X interface operates automatically once installed. Its primary function is to translate vehicle data signals for the aftermarket radio and maintain factory features.
6.1 OnStar Retention
The interface retains full OnStar functionality. When an OnStar call is initiated or received, the audio will be routed through the vehicle's speakers, and the aftermarket radio will mute or switch to the OnStar audio source, depending on the radio's capabilities.
6.2 Warning Chimes
All factory warning chimes (e.g., door ajar, seatbelt, key in ignition) are retained and will sound through the vehicle's speakers as they did with the factory radio.
6.3 Steering Wheel Controls (Optional)
If connected and configured, the interface allows the factory steering wheel audio controls to operate the aftermarket radio. Refer to your aftermarket radio's manual for programming instructions if necessary.
7. Техникалык тейлөө
The PAC OS-2X interface is designed for maintenance-free operation. No user-serviceable parts are inside the module.
- Ensure all wiring connections remain secure. Loose connections can lead to intermittent functionality.
- Keep the area around the interface module free from excessive dust or moisture.
- Do not attempt to open or repair the module.
8. Кыйынчылыктарды
If you experience issues with your PAC OS-2X interface, refer to the following table:
| Көйгөй | Мүмкүн себеп | Чечим |
|---|---|---|
| Aftermarket radio has no power. |
|
|
| No sound from aftermarket radio. |
|
|
| OnStar not working or no audio. |
|
|
| Warning chimes are missing or incorrect. |
|
|
| Steering Wheel Controls not functioning. |
|
|
9. Техникалык шарттар
| Өзгөчөлүк | Деталь |
|---|---|
| Модель номери | OS-2X (Item model number: OS2X-SL) |
| Бренд | PAC |
| Шайкештик | Select GM Class II Vehicles |
| Сакталган өзгөчөлүктөр | OnStar, Warning Chimes, Retained Accessory Power (RAP), Steering Wheel Controls (with compatible radio) |
| Материал | Жез, поливинилхлорид (ПВХ) |
| Элементтин өлчөмдөрү (L x W x Y) | 9 x 9 x 2 дюйм |
| Элемент Салмагы | 0.96 фунт (болжол менен 15.4 унция) |
| Туташтыргыч түрү | OEM/Deutsch DT |
| UPC | 609098814478, 606523105729 |
10. Кепилдик жана колдоо
10.1 Кепилдик маалыматы
The PAC OS-2X interface comes with a 1 жылдык Өндүрүүчүнүн Кепилдиги from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from improper installation, accident, misuse, abuse, neglect, or unauthorized modification.
For warranty claims, please retain your proof of purchase and contact PAC customer support.
10.2 Техникалык колдоо
If you require technical assistance or have questions regarding the installation or operation of your PAC OS-2X interface, please contact PAC technical support. Before contacting support, please ensure you have read this manual thoroughly and performed basic troubleshooting steps.
Contact information for PAC can typically be found on their official webсайтында же продуктунун таңгагында.





