DTC B101E is a General Motors diagnostic trouble code in the “Electronic Control Unit Software” family. On its own it… Read more B101E & U0028 on an HMI: the “VIN Not Programmed” Fault
Category: HMI / Infotainment Systems
Technical guidance on GM HMI and infotainment systems, including HMI 2.0, 2.5, 3.x variants, IO5/IO6/IOS/IOT configurations, screen compatibility, and CarPlay/Android Auto behavior. Includes programming considerations, hardware differences, and model-year nuances essential for correct operation and retrofit success.
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.
How to Add Apple CarPlay and Android Auto to a 2014–2015 C7 Corvette (The OEM-Correct Way)
2014–2015 Chevrolet C7 Corvettes were built before Apple CarPlay and Android Auto were available from GM. This tech note explains why these vehicles lack factory smartphone projection, how CarPlay and Android Auto can be added correctly using OEM GM hardware, and why proper steering wheel control support requires more than a basic retrofit.
Why Some 2016 GM Vehicles Don’t Have Apple CarPlay or Android Auto
Some 2016 GM vehicles equipped with IO5 or IO6 infotainment systems do not support Apple CarPlay or Android Auto due to a factory hardware split identified by RPO CPO. This tech note explains why the limitation exists, how to identify affected vehicles, and when an OEM-correct upgrade is possible.
GM Discontinued HMI Map Updates — But WAMS Still Offers the Final Release
When GM ended support for map updates on HMI-based infotainment systems, it left owners of factory navigation–equipped vehicles without a… Read more GM Discontinued HMI Map Updates — But WAMS Still Offers the Final Release
Can I Add Apple CarPlay or Android Auto to My GM Vehicle?
A Complete OEM-Pattern Retrofit Guide for 2013–2015.5 HMI Systems** Many GM owners of early MyLink, IntelliLink, and Cadillac CUE systems… Read more Can I Add Apple CarPlay or Android Auto to My GM Vehicle?
Understanding GM HMI and CSM Infotainment Systems: Identification, Failures, and Replacement Guidance
Understanding which infotainment module your GM vehicle uses is essential when diagnosing failures or selecting a proper replacement. GM has… Read more Understanding GM HMI and CSM Infotainment Systems: Identification, Failures, and Replacement Guidance