GM electronics are genuinely complicated. A single model year can include several hardware versions, and the differences between them are… Read more Ordering GM Parts by VIN: How WAMS Makes It Simple
Tag: GM Electronics Compatibility
Why an HMI 2.5 to HMI 3.x Upgrade Was Never Feasible on Most GM Vehicles
Many GM owners have asked why an “HMI 3.x upgrade” was never offered for HMI 1.1–2.5 vehicles. This article explains, in OEM-level detail, why such an upgrade was never technically viable for most platforms—and why WAMS refuses to sell solutions that only partially work.