1996 GMC Sonoma won't start till dash lights come on

About half the time I try to start my truck the engine will turn over but won't start, i've noticed that when it doesn't start the dash lights (check engine, abs, brake.)Are not on. Sometimes after cranking over for awhile the dash lights will suddenly come on and instantly the truck starts and runs great. Most of the time I have to turn the key several times to get the lights to come on. On a couple of occasions I have been driving down the road and the truck will die and all the dash lights go off. I know i'm getting fuel because I can smell it after cranking for awhile. Any advice would be greatly appreciated. Thanx