Success! oil change went smooth (beside the spill on my driveway lol) and I was able o plug in the O2 sensors, although I need to work a little harder on one of them 'cause I don't think it is plugged in all the way thru.
The exhaust emissions are very strong, would that be because is an old car or something else might be wrong?.

I need to drive it some more and see what else comes up. Next thing on my list is the cruise control (I'll post on that).
Thanks everyone!

 

Good Job!!
With the O2's being unplugged the catalitic convertors are overloaded with unburned gas from the truck running to rich. Now that they are plugged back in they will clear themselves over time so the exhaust will smell better.

Your cruise control not working is 99% of the time a vacum leak. Follow the vacum line from the cruise control module and check every connection for cracked hoses. Check the vacum line on the brake pedal switch too.