[Zieke]

hey guys, sucks that my first post in a long time is me asking for help but here it is.

My 2000 Tahoe just started having problems the other night. When i was getting ready to leave town i noticed a few seconds after starting the car there was a quite noticeable rumble through the car ive never felt before, than i listened to the engine and it sounded abnormal as well. My rmps were lower than usual and its as if the engine is on the brink of stalling but still runs.

i was able to drive it home but have not had the time to look at anything yet. im busy with transferring out of my squadron and thats taking up most of my time.
when i was driving it home i did notice when i was at red lights the rpms were down to around 400 and there was a serious lack of power. she can still rev up but the rumble feeling remains as well as the power issue.

Any ideas as to where i should start?
Thanks for any and all help.

also. i do have the service engine soon light on as well.