More Tahoe Electrical issues

Anyone come across this problem on a 2001Tahoe? Hit a bump and the dash board shuts down. I try to duplicate it in my garage by wiggling wires and connections but can't. When it happens on the road, the speedometer, tach, fuel & temp gauges, odometer all shut down for split second then pop back on. The battery light comes on in the message center box. Oddly though, the volt meter and oil psi gauges don't seem to be affected. I've tapped on fuses, pulled and tugged and twisted every wire I can find under the dash and under the hood and can't make it happen. Any thoughts would be helpful.
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Answers
Wrong year, but here's one example.