GM Cluster RPO Codes (GM Instrument Cluster RPO Codes (UDV, UDD, UDC, UHS))

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 uses a set of “UDx” RPO codes to identify which instrument cluster tier is installed in a vehicle. Cluster hardware varies dramatically across these tiers — from a basic monochrome display with analog gauges to a full 12.3-inch digital reconfigurable cluster.

The cluster RPO ladder:

  • UDC — Base cluster lens variant. Typically monochrome or limited-graphic driver information display.
  • UDD — “Display Instrument-Driver Info Enhanced (Multi Color Standard Graphic).” Mid-tier color driver info display. Standard on most K2XX and T1 truck trims.
  • UHS — “Display Instrument-Driver Info Enhanced (Multi Color Enhanced Graphic).” Enhanced color cluster between UDD and UDV.
  • UDV — “Display Instrument-Driver Info Enhanced, Full Cluster (Multi Color Graphic).” The top-tier 12.3-inch full digital cluster.

WAMS performs cluster retrofits across these tiers. The most common upgrade path is UDD → UDV — swapping a standard-graphic cluster for the full 12.3-inch digital cluster on platforms where the hardware is compatible. Required work:

  • Source the donor 12.3-inch cluster from a same-platform donor vehicle
  • Update the cluster’s EEPROM with the recipient vehicle’s VIN and security PIN
  • Update the BuildRecord and XMLFile configuration to enable the correct gauges and features
  • VIN-program through GM SPS or Techline Connect

WAMS offers complete cluster upgrade services for many platforms — Cadillac CTS to ATS-V cluster, CT4 and CT5 full LCD upgrades, Camaro 6th-gen uplevel cluster, Denali/High Country T1 cluster, Escalade V-style cluster, and many others. See the GM Cluster Upgrade Guide for the full platform-by-platform matrix.

WAMS also sells replacement cluster lenses for specific platforms — useful when the cluster’s protective lens is scratched or damaged but the underlying cluster is still good.

Vehicle Applicability

All GM vehicles with electronic instrument clusters. UDV is most common on Cadillac (CTS-V, CT6, CT4-V, CT5-V, Escalade) and top-trim Chevrolet/GMC (Denali, High Country) on the T1 platform, plus Corvette C8.

Also known as: Cluster RPO, UDV, UDD, UDC, UHS, GM Cluster Codes, Digital Cluster RPO

Related Terms

  • UDV — The GM RPO code for the 12.3-inch full digital instrument cluster found on premium Cadillac and select Chevrolet/GMC trims.
  • 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.
  • 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.

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