I am grateful that i found this Forum. I am going to include very detailed pictures of the 2000 S-10 Blazer i just disassembled for a leaky heater core. Yes folks you do have to cut the heater box apart. I used my Kolbalt utility knife and it cut like butter. proceded to unbolt the 5.5mm bolts atop the heater box inside the engine compartment and used a Snap-On racheting screw driver with a Craftsman 3" X 1/4" drive extention with a Craftsman 1/4" Swivel to a 10mm 1/4" socket. Note that the screen mesh prevented my 10mm bolt from falling down in or out at all. Once inside the vehicle to pull out the internal heater box you should see a two 5.5mm bolts again atop the inside heater box? Wrench them out. Flip up the plastic lid and them grab ahold of the heater core hose tubings lift up firmly. You have in your hand. Great Thanks goes out to the original poster of this discussion forum. Sorry folks. I tried to land some great and very detailed pics attached here in? Can't figure out how to do it.
So what i am going to do is add them to my myspace account for you all to look at. I'm a welder and mechanic. Not real great at this whole internet thing just yet.
Sorry? I should have the posted in a day or two. See them at - (
www.myspace.com/Rear_West_Main_Auto)