My heater hoses were swollen and leaking a little on my '96 STS. I went to replace them and in the process of pulling the hose off the heater core, the piece the heater hose slides on snapped off. Which isn't too bad because the heater core was leaking some anyway. I planned on replacing the heater core later this week, but now it looks like a job for NOW. I was waiting until later to do it because I have a repair book on order, so now that I need the job done NOW, is there any tips on how difficult it will be to change and what steps are involved. Is it like the Deville? I've found ways to do it on this site for the Deville but not the Seville. Still have to take out the bottom of the dash and glove box? Some tips would really be nice. Thanks.