Sorry, had to ask

[spavinaw]

I know this doesnt belong here. Please forgive me. I am new to this forum and new to most any major mechanic issue. Here is my question, maybe you can answer or steer me in the right directions:

My wifes 2000 Chevy Suburban has toruble starting. when you get in and turn the key it cranks, cranks, cranks, cranks and cranks. Eventually it fires up evertime. It will crank for 3 to 5 seconds before starting. Sometimes after it fires up the RPM's dip real low and eventually smoothes back out to normal. Can someone help me here? It does have 220,000 miles on it but I cant trade it for a new one with a payment. I love not having a payment!

Thanks and again I apologize for bringing up the 2000 model question in a classic forum.