Service Engine Soon light along with speedomoter cable quit working..

[Aluli]

I went on a trip. 500 miles out, stayed the night and was driving home about 250 miles into the trip I pulled in for gas. Started it up and there was no light on the gear shift indictor telling me what gear I was in..no biggie. I pull into onramp and notice that the speedomotor is not working or the RPM gage or the odometor. The "Service Engine Soon" light was on at this point as well.

There seems to be a loss of power. When I go to put it into drive you can feel it. You have to really step into the gas pedal to get it to go. When idle...I can take my foot off the brake and it doesnt roll an inch and it usually crawls.

I will take it in to get the computer read to see what codes pull up.. I was wondering if this has happened to any of you and what did you have to do? I went out and checked all my fuses and everything is good there.

Thanks!!