guys, i have a 1990 k-1500 4x4 with factory stock 5.7 v8 with 150k miles. been running really good. yesterday i was heading down to the beach, and was stuck in stop and go, really slow traffic. it was hot outside, high 80's. with the a/c on, setting in traffic, all of a sudden the truck stalled. i noticed the red check gauges light was lit on the dash. i put the windows down and turned it over, it didnt fire up. we thought we were going to have to push it off the road, turned the key again, and it fired up and ran perfect the rest of the day/night. any thoughts on what might have happened ? can these fuel injected cars/trucks get vapor lock like the older carburetor cars did from time to time ? thanks guys.