I am currently stationed overseas as as my father went to start my truck to drive it a bit after replacing the alternator it fired right up. Shortly after it died. The truck will crank with no problems 9/10 times but will not fire. About 1 of 10 times it slow cranks like the battery is dead which it is not. Occasionally as well the horn honks, lights flash, and security light flashes on in the dash. It was loaded on a trailer and towed to the local dealership and they said all of the injectors went bad which seems off as the truck has only 40,000 miles on it and that to my knowledge would not set off the lights, horn, and security light. Any help would be greatly appreciated.