Gages on the dash quit working is this a fuse problem

If your silverado is between the years 03-06, and you are saying all your gauges quit working (I'm assuming all at once), then most likely what has happened is, one or more resistors have cracked at their solder connections to the cluster circuit board. When these solder connections crack, the only function you will see on your cluster will be hazard light/turn signal operation and backlighting. There are quit a few diy sites in the web to correct this issue, saving you a quite a bit of money in the process. If that doesn't work, then there are several gauge repair services that should be able to correct the issue at a reasonable cost. R.

fuse blew.

if they work when not driving ,then its not a fuse.
what is gages,my englich is not so good.

You have a faulty instrument cluster.Replace instrument cluster

That dash board uses ribbon connectors to connect to the wiring harnesses. Make sure the connectors haven't come free. You can pick up a used one that works from a parts yard for about $25 and replace the old one. This all assumes that the fuses for the dash are in good working order. The only reason I recommend replacing the cluster is because you lost too much at once and this could be caused by a short on the board that controls it all.

Check your fuses, most likely one or more are blown. Change the blown fuses with the same size and watt fuse.

Did you happen to hook you stereo ground to the wire that lit the lights on you factory stereo from the dash light controls? I think its a brown wire

when you pulled the top of the dash off did you check the cable connection to the insturment cluster. i had a similar problem where my gauges died individually including the spedo and tach. slapping the dash usually would cause the gauges to start working again, but that quit also and i had to tear the cluster out and check the conneciton. that fixed the problem.

you have no power coming in from one of the circuits from fusebox under hood. You will need to run new circuit line in from dash and BCM to the fuse box under hood

check the relay for the dash gauges.

Robert