Not an easy task! Dash must be removed, ac discharged, HVAC housing removed and HVAC housing separated to replace heater core. Not for the faint at heart, but easy for an experienced Technician.
The Haynes Jeep Cherokee 1984 - 1996 book has 7 different diagrams which show how to do that repair.
Not one penny. The 1996 Jeep Cherokee does not have a timing belt. It has a timing chain.
No. Too many differences between those years.
Yep
http://www.partstrain.com/
Check the vacuum operated valve at the hose going to the heater core.
I wouldn't replace it, just fix it. Check heatertreater.net for information on how.
No, the entire dash has to be removed.
this is because he was a monkey this is because he was a monkey
Yes
Have the alternator checked. It happened to me, and I had to replace it.
http://www.youtube.com/watch?v=reonxApWkVU