Trailblazer ext
The digital display for mileage, trip-tic, and programming simply went dart while I was programming the door locks to activate when in gear rather than at slow speed. Nothing I have found will bring back the display. Other lighting components appear to be fine
It’s entirely possible that the BCM is failing, which wouldn’t be too surprising with a 19 year old vehicle. If your mechanic agrees that the BCM is the problem, remanufactured ones are not very expensive.
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Is this the D.I.C. display?
The rest of the instrument panel is working?