# PAC AOEM-GM21A System Interface Kit (Add or Replace an Amplifier in Select GM/Chevrolet Vehicles) — resale value

Source: JunkPal price guide — https://junkpal.ai/products/pac-aoem-gm21a-system-interface-kit-add-or-replace-an-amplifier-in-sel-b000k50nc0

**PAC AOEM-GM21A System Interface Kit (Add or Replace an Amplifier in Select GM/Chevrolet Vehicles)** sells for about **$42.95** 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-aoem-gm21a-system-interface-kit-add-or-replace-an-amplifier-in-sel-b000k50nc0

## Value

| Condition | Value (USD) |
| --- | --- |
| New / Sealed | $42.95 |

Values are medians of real closed eBay sales, updated 2026-07-22. 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%2520AOEM%2520GM21A%2520System%2520Interface%2520Kit%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%2520AOEM%2520GM21A%2520System%2520Interface%2520Kit%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 & Vehicle Electronics |

## About

The PAC AOEM-GM21A System Interface Kit is an electronic component designed to allow for the addition or replacement of an amplifier in select GM and Chevrolet vehicles.

This kit is sought after by automotive enthusiasts, installers, and vehicle owners looking to upgrade or modify their car audio systems in compatible GM/Chevrolet models.

Resale value is influenced by the kit's condition, ensuring all components are present and functional for proper system integration.

## FAQ

**What is the PAC AOEM-GM21A used for?**

This system interface kit allows users to add or replace an amplifier in specific GM and Chevrolet vehicles.

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

The resale value is determined by the kit's condition and whether it is complete.

**Is this kit for all GM/Chevrolet vehicles?**

No, this kit is specifically designed for select GM and Chevrolet vehicles.

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Full price guide: https://junkpal.ai/products/pac-aoem-gm21a-system-interface-kit-add-or-replace-an-amplifier-in-sel-b000k50nc0
How these values are computed: https://junkpal.ai/methodology
Cite as: "JunkPal price guide value as of 2026-07-22, based on real sold listings (junkpal.ai)"