[kenny-1907]

I had an 88 K1500 jimmy with the 5.7 in it with tb injection and it did the exact same thing to me once......well more than once. Most likely i am thinking if you get it scanned or jumper it to rerad the codes it will probably throw a code 12 which will be the ignition module. After i got rid of the truck (my brother bought it) it did the same thing a few times again over the years that he owned it, if i remember correctly it did it about 3 or 4 more times. The cost for a new ignition module is not that expensive ($60-90) depending on the make you get and it is fairly simple to change, a matter of approx 30 mins tops.