This little quirk just started earlier today. When sitting at a stop light/sign, I noticed that my "choke" light came on. As soon as I step on the gas, or put the transmission in park, the light goes off. By the way, my truck is a '86 K5 w/ a rebuilt 305 and no special modifications. Could it be a low battery? I am thinking that because I replaced the alternator about a month ago, and the battery was drained. Any ideas? God has a hard on for Marines, because we keep Heaven chock full of fresh souls!