Hi all, I have a 1998 GMC K2500 with the Vortec 5700 which the previous owner rebuilt about 65k miles ago. About a month ago I noticed that it took a bit longer to start than usual (typically less than a second even when cold), and today it was the worst -- it took about 3 seconds of cranking to fire up cold. It will fire right up like normal if I start it again right away, but after sitting a few hours it will take more cranking than it used to. Also, two weeks ago it began to have a different idle on start up, now when it starts it will idle up to maybe 1200 when cold, and 1000 when hot. It used to go up to 1600 and 1800 respectively. Not sure if the two issues are related, but I figured I'd post this here to get some feedback and opinions before I tried to throw parts at it. Thanks.