{"product_id":"pac-rp5-gm31-radio-replacement-interface-with-onstar-swc-retention","title":"PAC RP5-GM31 Radio Replacement Interface With OnStar \u0026 SWC Retention","description":"\u003cp\u003eIn this review the PAC RP5-GM31 is evaluated for drivers who need to replace a factory radio in select GM LAN vehicles while keeping important factory systems intact. The bottom line: this interface is for installers and technically minded owners who want to retain \u003cstrong\u003eOnStar functionality\u003c\/strong\u003e, steering wheel controls, and factory Bluetooth when swapping the head unit. It focuses on preserving vehicle features that usually disappear with a radio change, making it a practical choice for those who value retained convenience and safety systems over a simple harness adapter.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnStar retention:\u003c\/strong\u003e Keeps factory OnStar functions active after installing an aftermarket radio so emergency and roadside services remain available.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteering wheel control retention:\u003c\/strong\u003e Preserves steering wheel audio controls so drivers keep familiar control of volume and track functions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNavigation outputs:\u003c\/strong\u003e Provides navigation output wiring to integrate factory navigation prompts with a replacement head unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReverse wire output:\u003c\/strong\u003e Supplies a reverse camera trigger wire to enable aftermarket backup camera operation tied to the vehicle gear state.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual zone and rear seat audio:\u003c\/strong\u003e Retains dual zone audio control and rear seat audio controls so passengers can keep separate audio sources.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIllumination and parking brake outputs:\u003c\/strong\u003e Offers illumination output and a parking brake output for head unit dimming and safety interlocks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis interface suits professional installers and DIYers replacing the factory radio in supported GM LAN vehicles who need to keep \u003cstrong\u003efactory Bluetooth\u003c\/strong\u003e (noted for 2009+ models), OnStar, and steering wheel control operation. It is particularly useful for vehicles where preserving rear seat audio and dual zone functions is important for passenger comfort.\u003c\/p\u003e\n\n\u003cp\u003eNot every owner needs this level of integration; if the goal is a simple plug-and-play harness without retaining OnStar or navigation outputs, a basic adapter may be more economical. Also, the interface does not retain escalating parking sensor tones, so those who require full sensor audio recreation should plan for alternate solutions.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRetains OnStar and many factory systems, preserving important safety and convenience features during a radio swap.\u003c\/li\u003e\n\u003cli\u003eMaintains steering wheel controls and factory Bluetooth on compatible 2009+ vehicles, reducing setup complexity.\u003c\/li\u003e\n\u003cli\u003eIncludes navigation outputs, reverse trigger and illumination outputs for thorough integration with aftermarket radios.\u003c\/li\u003e\n\u003cli\u003eSupports rear seat audio and dual zone functionality, keeping passenger control intact.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDoes not retain escalating parking sensor proximity tones, so full parking sensor audio is not preserved.\u003c\/li\u003e\n\u003cli\u003eCompatibility is limited to select GM LAN vehicles and requires careful installation to access all functions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eRadio replacement interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKey retentions\u003c\/td\u003e\n\u003ctd\u003eOnStar, steering wheel controls, factory Bluetooth (2009+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs\u003c\/td\u003e\n\u003ctd\u003eNavigation outputs, reverse wire output, illumination output, parking brake output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio features\u003c\/td\u003e\n\u003ctd\u003eRetains rear seat audio controls and dual zone function\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChime adjustment\u003c\/td\u003e\n\u003ctd\u003eChime volume adjustment available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLimitation\u003c\/td\u003e\n\u003ctd\u003eDoes not retain escalating parking sensor tones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe PAC RP5-GM31 is a sound choice for anyone replacing a factory radio in supported GM LAN vehicles who needs to preserve OnStar, steering wheel controls and factory Bluetooth. It delivers broad feature retention and useful outputs for navigation and reverse camera integration, offering solid value to installers who want a clean, integrated result while accepting that advanced parking sensor tones are not preserved.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this keep OnStar after replacing the radio?\u003c\/strong\u003e\u003cbr\u003eYes. The interface is designed to retain OnStar functionality when the factory radio is removed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it keep factory Bluetooth?\u003c\/strong\u003e\u003cbr\u003eIt retains factory Bluetooth on compatible 2009 and newer model vehicles according to the product details.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it preserve parking sensor tones?\u003c\/strong\u003e\u003cbr\u003eNo. It does not retain escalating parking sensor proximity tones, so those alerts will not behave exactly as with the factory radio.\u003c\/p\u003e","brand":"PAC","offers":[{"title":"Default Title","offer_id":48241317118171,"sku":"B018CI0K1K","price":229.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61pGWisshfL.__AC_SX300_SY300_QL70_FMwebp.webp?v=1770967667","url":"https:\/\/gearmusthave.com\/products\/pac-rp5-gm31-radio-replacement-interface-with-onstar-swc-retention","provider":"GearMustHave","version":"1.0","type":"link"}