odd behavior - cold

[WAC]

This has happened twice now, and both times were in the last week. My 99 Tahoe will start up cold, then when put into drive and about 10 feet later, everything cuts out for a second. It is like all electronic power is cut for just a second, because along with the engine cutting out momentarily, I can hear all the relays behind the dash clicking, and all the idiot lights come on, like when the key is first turned. After that it runs like nothing happened. Any ideas?


Thanks

[Atomic]

Check the electrical connections underhood. Paying special attention to the ground and power connectors on the battery.