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
Backup Camera Works But the Screen Is Black? Meet the HMI Bypass Module
Your GM screen is black but the backup camera still comes up — so the HMI must be fine, right? Not necessarily. GM routes rear camera video through a dedicated bypass module so the camera keeps working when infotainment fails. Here’s why that exists, and what it means for your diagnosis.
Cadillac Logo at Startup Then Black Screen: A Complete GM CSM Failure
A Cadillac emblem appearing on a Chevrolet, GMC, or Buick infotainment screen followed by a black screen is a complete CSM failure. It’s one of the few GM infotainment symptoms that points to a single module with confidence. Here’s how to confirm it and what to do next.
Can You Add Adaptive Cruise Control to a GM Vehicle? Why Having AEB Isn’t Enough
Have automatic emergency braking and assume your GM vehicle is ready for adaptive cruise? It isn’t — and here’s the technical reason why, from the radar and camera hardware that’s missing to GM’s factory programming wall, plus why it’s cheaper to buy the vehicle that came with it.
GM BCM Replacement Cost: What a Body Control Module Really Costs
A brand-new, VIN-programmed GM body control module is typically less than the dealer route — and it’s a new OEM part with full warranty, not a salvage unit. Here’s what a BCM replacement really costs, why the new-module route comes in lower, and what’s involved after it arrives.
B101E & U0028 on an HMI: the “VIN Not Programmed” Fault
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
GM’s End of CarPlay and Android Auto: What It Means by Model Year
In October 2025, GM CEO Mary Barra confirmed what had only been rumored: Apple CarPlay and Android Auto will be… Read more GM’s End of CarPlay and Android Auto: What It Means by Model Year
How to Add 2019 Track Mode & GTLM Displays to C7 Corvettes (2014–2018)
C7 Corvettes can be upgraded with 2019 Track Mode and GTLM instrument cluster displays using OEM-correct hardware. This guide explains compatibility, requirements, and how 2014–2015 models can achieve full functionality with CarPlay and steering wheel control support.
Why GM Dealerships Usually Cannot Program Retrofit or Swap Features
Many GM owners are told to “just have the dealer program it” after a retrofit or swap. In reality, dealership programming is tightly restricted to a vehicle’s original build configuration. This Tech Note explains why most retrofits fall outside dealer capabilities — and the rare exceptions where limited changes are allowed.
Why Mirror Swaps Cause Camera Issues on GM Vehicles — And Why Calibration Often Fails
Swapped mirrors on a GM vehicle and now your cameras are cropped, guidelines are wrong, or an hourglass won’t clear? This tech note explains why calibration often fails after mirror swaps and why the real cause is a camera-processing configuration mismatch—not a defective camera or HMI.