95 S10 2.2L Completely Dies Nothing Works

95 S-10 2.2L. Sometime when i am driving down the road my S-10 will completely lose power (electrical and motor). The whole truck goes dead. i'm figuring there is a loose connection somewhere, or PCM problem. It died on me the other day and when my buddy came out with the chain and towed me home, we hit a bump and all the power came back on and it started right back up! Crazy Any idea where to start diagnosing would be helpful!!

Clean battery cable ends real good.
Start with battery cables and battery cables ends and go all of the way to fuse boxes and ign switch and check for lose of 12 volt power and also check all grounds.

Thank you my friend! I will start there and post back my findings tonight or tomorrow!