SPID label (Service Parts Identification Label)

Concepts

The physical sticker on a GM vehicle that lists all of its RPO option codes. Typically located in the glove box, trunk floor, or door jamb.

The SPID (Service Parts Identification) label is the physical sticker on a GM vehicle that lists every RPO option code installed at the factory. It is the authoritative source for determining a vehicle’s exact build configuration — what infotainment hardware it has, what audio system, what cluster, what packages, what colors, what engine, and what transmission.

Where to find the SPID label:

  • Trucks — Typically inside the glove box.
  • SUVs and crossovers — Glove box or spare tire cover in the cargo area.
  • Sedans and coupes — Spare tire cover in the trunk floor, or sometimes the inside of the driver’s door panel.
  • 2018 and newer — In addition to the printed SPID label, all GM vehicles include a QR code on the driver’s door B-pillar that encodes the VIN and full RPO list. Scanning this with a smartphone QR app is the fastest way to retrieve the data.

What the SPID label contains:

  • The vehicle’s VIN
  • A complete list of three-character RPO codes
  • Color and trim codes (typically prefixed)
  • Often: assembly plant code and build date

For WAMS module work, the SPID label or the door QR code is required to ensure the replacement part is configured correctly. A wrong RPO match results in a module that physically fits but produces wrong behavior — wrong audio routing, missing features, or “LOCKED” radio.

Vehicle Applicability

All GM vehicles, all model years. Location varies by platform.

Also known as: SPID label, Service Parts Identification, RPO sticker, RPO label

Related Terms

  • RPO — GM's three-character codes identifying every factory-installed option, package, and feature on a vehicle. Critical for module matching and parts ordering.
  • VIN Programming — The process of configuring a GM electronic module to a specific vehicle's VIN and option content so it operates as if installed at the factory.
  • GM Audio RPO Codes — Reference table of GM audio system RPO codes — UQ3, UQ5, UQF, UQG, UQA, UQS, UQH — used to identify whether a vehicle has base audio, mid-tier enhanced audio, or Bose premium audio.
  • GM Cluster RPO Codes — Reference table of GM instrument cluster RPO codes — UDC, UDD, UHS, UDV — identifying which cluster hardware tier is installed (base graphic, standard color, enhanced color, full digital).
  • GM Common Option Codes — Reference for commonly-encountered GM RPO option codes that determine telematics and connectivity features: UE1 (OnStar), UE0 (OnStar Delete), VV4 (WiFi), CWM (Technology Package).
  • IO5 — The GM RPO code for the non-navigation HMI 2.0/2.5 infotainment configuration found on most 2014–2019 GM vehicles.
  • IO6 — The GM RPO code for the HMI infotainment configuration with embedded factory navigation, found on premium-trim 2014–2019 GM vehicles.
  • UDV — The GM RPO code for the 12.3-inch full digital instrument cluster found on premium Cadillac and select Chevrolet/GMC trims.