Starting issues

ok i have a 98 yukon 4 wd. first thing in the morning i have no problem starting the car. can drive to work, feels like it may be running a little hard but nothing major. if i would go to start it say a few minutes to few hours later, just turns over but doesnt start. let it sit for like 5 hours then it will start again. any ideas?

I had that same problem with my 97 2 door yukon. I tried replacing the starter twice, then I was told the battery was no good so I replaced it and no problem till the past 2 days (replaced battery 4 months ago) past 2 days its been acting up again and I think its the ignition switch. What you should do is take it to an auto part store and have them test the battery for you. Might be a simple fix like that, worked for mine for awhile till yesterday.