# PAC RP4-GM31 Radiopro4 Stereo Replacement Interface with Steering Wheel Controls for Select GM Vehicles with Canbus — resale value

Source: JunkPal price guide — https://junkpal.ai/products/pac-rp4-gm31-radiopro4-stereo-replacement-interface-with-steering-whee-b0072lcxim

**PAC RP4-GM31 Radiopro4 Stereo Replacement Interface with Steering Wheel Controls for Select GM Vehicles with Canbus** sells for about **$169.95** new or sealed, based on real closed eBay sales.

Live listings and the full sold-price history are on the page: https://junkpal.ai/products/pac-rp4-gm31-radiopro4-stereo-replacement-interface-with-steering-whee-b0072lcxim

## Value

| Condition | Value (USD) |
| --- | --- |
| New / Sealed | $169.95 |

Values are medians of real closed eBay sales, updated 2026-07-16. They are estimates for reference, not offers or appraisals — condition, completeness and edition move them a lot, so compare against the sold listings before pricing anything.

## Check the market

- [Sold listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DPAC%2520RP4%2520GM31%2520Radiopro4%2520stereo%2520interface%2520steering%2520wheel%2520controls%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-sold&p=md-sold) — the closed sales these medians are computed from
- [Live listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DPAC%2520RP4%2520GM31%2520Radiopro4%2520stereo%2520interface%2520steering%2520wheel%2520controls%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-live&p=md-live) — what sellers are asking right now

eBay links are affiliate links: JunkPal may earn a commission at no cost to you.

## Details

| Field | Value |
| --- | --- |
| Brand | PAC |
| Category | Car Electronics |

## About

The PAC RP4-GM31 is a stereo replacement interface designed specifically for select GM vehicles. It allows for the integration of aftermarket head units while retaining factory features like steering wheel controls.

This interface is sought after by owners looking to upgrade their car's audio system without losing essential factory functionalities.

Resale value is influenced by the unit's physical condition, whether all components are present, and its specific edition or compatibility.

## FAQ

**What is the PAC RP4-GM31 used for?**

It is a stereo replacement interface that allows aftermarket head units to work with select GM vehicles.

**What factors affect the resale value of this interface?**

The resale value is determined by the unit's condition, completeness, and edition.

**Is this interface compatible with all GM vehicles?**

No, this interface is designed for select GM vehicles.

---

Full price guide: https://junkpal.ai/products/pac-rp4-gm31-radiopro4-stereo-replacement-interface-with-steering-whee-b0072lcxim
How these values are computed: https://junkpal.ai/methodology
Cite as: "JunkPal price guide value as of 2026-07-16, based on real sold listings (junkpal.ai)"