GM Common Option Codes (GM Common Option Codes — OnStar, WiFi, Technology Package)

RPO 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).

Several frequently-encountered GM option RPO codes determine a vehicle’s telematics and connectivity hardware. These appear on the SPID label alongside the audio (UQx), cluster (UDx), and infotainment (IOx) codes.

UE1 — OnStar Equipped

GM’s official definition: “Communication System-Vehicle, OnStar.” Indicates the vehicle has the full OnStar telematics hardware — VCIM module, cellular antenna, and OnStar service capability. Most GM vehicles from approximately 2000 onward have UE1.

UE0 — OnStar Delete

Indicates the vehicle was specifically built without OnStar hardware. Less common; sometimes appears on export-market vehicles or fleet builds. UE0 vehicles do not have a VCIM module installed. Worth flagging when ordering a CarPlay/Android Auto retrofit because some kits assume OnStar hardware is present.

VV4 — WiFi Hotspot Capability

Indicates the vehicle’s VCIM has the in-vehicle 4G LTE WiFi hotspot capability. Requires an active data subscription (separate from OnStar emergency service). Common on most GM vehicles from approximately 2015 onward.

CWM — Technology Package

Indicates the vehicle was built with GM’s Technology Package option, the specific contents of which vary significantly by vehicle. The Technology Package typically includes the 12.3-inch UDV digital cluster, additional driver-assist features, and often Super Cruise. Where CWM appears varies by model:

  • Cadillac CT4, CT5, CT4-V, XT4
  • Silverado 1500 2022+ (Global B refresh)
  • Sierra 1500 2022+ (Global B refresh)
  • Colorado 2023+
  • Yukon 2023+
  • Bolt EV 2027

The exact features bundled into CWM vary by vehicle — check the vehicle’s full RPO list to determine what’s actually included on a specific build.

Why these codes matter:

For module replacement and retrofit work, knowing whether a vehicle has UE1 vs. UE0 (OnStar present or not) and what’s in CWM (cluster type, driver-assist hardware) is required for correct VIN programming. Send your VIN to WAMS and we’ll pull the complete RPO list before recommending parts.

Vehicle Applicability

All GM vehicles. Specific codes' inclusion varies by trim, package, and model year.

Also known as: UE1, UE0, VV4, CWM, OnStar Delete, OnStar Equipped, GM Option Codes

Related Terms

  • VCIM — The OnStar/telematics module that connects a GM vehicle to OnStar's cellular network and provides GPS, hands-free calling, and the WiFi hotspot.
  • RPO — GM's three-character codes identifying every factory-installed option, package, and feature on a vehicle. Critical for module matching and parts ordering.
  • SPID label — 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.
  • UDV — The GM RPO code for the 12.3-inch full digital instrument cluster found on premium Cadillac and select Chevrolet/GMC trims.
  • 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).

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