GM TSB: Backup Camera Black Screen on Startup (Triangle + Camera Slash)
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Reset Steps for Silverado EV + Other GM Models
If you’ve ever shifted into Reverse and your center screen shows a black camera view with a triangle icon and a “camera with a slash” symbol, you’re not alone. GM has a January 2026 bulletin (PIC6566B) that calls out this exact behavior and provides dealer diagnostic/reset instructions.
The symptom (what owners see)
GM describes a condition where, on startup when shifting to Reverse, the radio display may show a black screen with the warning icons instead of the rear camera image. In some cases, you also can’t launch the camera app from the home screen.
Vehicles mentioned in the bulletin
The bulletin covers a wide range of GM vehicles and model years, including Chevrolet Silverado EV (2024–2025), plus Silverado LD/HD, Sierra LD/HD, Blazer EV, Lyriq, Colorado/Canyon, and others.
What GM thinks is causing it
GM notes this may be due to software anomalies that can sometimes be corrected by resetting the Image Processing Module (IPM) or Video Processing Module (VPM).
Trouble codes that may show up
The bulletin lists several DTCs that may be present as “Current,” including:
- U023C (loss of communication with VPM)
- B1596 (LVDS coax signal / alive sequence counter / signal invalid)
- B1A62 (rear vision camera signal / alive sequence counter / signal invalid)
What the dealer bulletin has them do (high level)
This is not written as a DIY procedure. It’s aimed at technicians and references option codes and module-specific steps (including module resets and verifying whether prior warranty labor has been performed). It also includes diagnostic paths like checking power/CAN to the VPM, checking/coax testing, and in some cases replacing components (module/cable) depending on what stays current vs history after resets/updates.
What you should do as an owner
If you hit this issue:
-
Record it
Take a quick photo/video of the screen showing the black camera view + icons. It helps the advisor/tech duplicate it. -
Write down the pattern
Does it happen only on cold start? Only first reverse after startup? Intermittent? -
Bring the bulletin number to the dealer
Tell them: “Please reference GM bulletin PIC6566B (Jan 2026) for Image/Video Processing Module reset instructions related to rear camera black screen.” -
If it’s safety-related for you, say that plainly
A reverse camera outage is a real usability/safety concern in a big truck. Ask them to prioritize diagnosis.
Important note: GM’s bulletin explicitly states these bulletins are intended for professional technicians, not DIYers, because proper tools/safety procedures matter.
My take (EV Outdoors angle)
This is one of those modern “software-defined vehicle” moments: the camera hardware may be fine, but a module hiccup can still take down your rear view until the system is reset/updated properly.
If you’ve experienced this on Silverado EV? Drop a comment with:
- Model/year/trim
- How often it happens
- Whether a dealer reset/update fixed it (and if it stayed fixed)
Got questions? Drop a comment I love hearing from all of you.
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