99 s-10 acts like a security issue, starter wont crank unless hold key in start for about 3-5 seconds. starts then dies.clean wiring.new ign.swtch.known good battery.only issue i see is fuel gauge pegged.m.t. 2500 says sending unit high.and seems to be some lateral movement in the key cyl. part of the ign. 50 amp. maxi fuse for ign. was blown. replaced along with ign. swtch.a wierd thing ....truck was idling....put in drive,then released park brake,killed engine?!