Radio Replacement Interface With OnStar Retention for Select GM

In this review the PAC RP5-GM11 is assessed for owners of select GM Class II vehicles who need to replace a factory radio without losing essential features. The bottom line: it is a practical, vehicle-specific radio replacement interface that preserves OnStar and factory steering wheel controls while providing navigation outputs, making it the best choice for those who value retained safety and convenience functions after an aftermarket head unit swap.

Key Features

• OnStar retention: Keeps factory OnStar functionality when the original radio is replaced so crash and SOS features remain available.
• Steering wheel control retention: Preserves factory steering wheel audio buttons so drivers do not lose hands-on control after installing an aftermarket unit.
• Navigation outputs: Provides outputs required to maintain navigation module connections, allowing existing navigation systems to keep working with a new radio.
• Factory Bluetooth retention: Retains factory Bluetooth on compatible 2009 and newer model vehicles so phone and media connectivity continue to work.
• Compatibility with BOSE systems: Designed to retain factory BOSE audio setups and rear seat audio controls in non-amplified systems for long-term audio integrity.
• Dual zone support: Supports dual zone audio functions so front and rear audio zones can continue operating as intended.

Who It's For

The RP5-GM11 is aimed at owners of the listed GM and related vehicles who want to install an aftermarket radio without sacrificing OnStar, steering controls or navigation outputs. It is especially useful for those retaining a factory BOSE system or rear seat audio controls where vehicle-specific fit and feature preservation matter.

It is not the right choice for vehicles with amplified audio systems outside the supported list, or for owners who need climate control steering wheel button retention, because the module does not preserve climate control steering inputs.

Pros & Cons

Pros

• Retains critical factory features such as OnStar and steering wheel audio controls for a seamless upgrade.
• Maintains factory Bluetooth on compatible 2009+ vehicles so phone and media use stays intact.
• Includes navigation outputs and supports dual zone audio for multi-zone vehicles.
• Works with many non-amplified and BOSE-equipped systems to preserve rear seat and audio controls.

Cons

• Does not retain climate control steering wheel buttons, which limits feature retention for some users.
• Some customers report mixed comments about sound quality after installation, including potential noise issues in rare cases.

Specifications

Our Verdict

The PAC RP5-GM11 is a pragmatic choice for GM owners who need to swap a factory radio yet keep OnStar, steering wheel controls and navigation outputs. It preserves many factory features and rear seat audio on supported vehicles, offering solid value for installations where maintaining original vehicle functions matters more than absolute aftermarket audio tuning.

Frequently Asked Questions

Will this retain my factory Bluetooth?
Yes, the unit retains factory Bluetooth on 2009 and newer compatible GM models.

Does it work with BOSE audio systems?
Yes, the module is designed to retain factory BOSE systems in supported non-amplified applications.

Are climate control steering buttons preserved?
No, the RP5-GM11 does not retain climate control steering wheel functions.