2000 Suburban Electrical issues

[slider85]

My 2000 Suburban will occasionally have electrical issues. During normal driving, the speedo will go to zero, the battery and air bag lights comme on and there seems to be a very slight power loss. This will happen for only a very short time and then things go back to normal. I'm afraid this may be a sign of bad things to come orit could be simple. Anyone heard of this before I pay $75 just for the dealer to look at it?

[taillight]

Sounds like a bad electrical connection. Start at the battery.check and clean. Check ground connections. Check wires at terminals and at fuse box. Check under dash and at dash connector.