Hey guys, no real questions yet, I have the 2001 FSM, so hopefully I don't have issues. But I was wondering for those of you that have done this, or gotten far enough to access the heater core, if you had any tips, tricks or things to avoid doing while going into this?

Thanks in advance.

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'93 SSE "Guinevere" RIP 1993 - 2019
'01 SSEi "Chloe" Mods: Intense FWI | GenV | WBS Intercooled | 3.2 MPS | 1.9 YT Rockers | SSAC Headers | N* TB | TEP Trans | 3.29 FDR | Torsen LSD
DTM Tuned | Dual AeroForce | Solid Mounts | 255 Walbro Pump | Fuel Logs | GXP STB & Sway Bars | CSS Lowering Springs | GXP Brakes | Disabled DRL
Magnaflow Mufflers | Magnaflow Cat | GXP Seats & Trim | 35 % Tint | Cleared & Tinted Tails | repinS Retrofited Morimoto Mini H1 | 19" GT500 Wheels
'09 G8 GT "Abigail" Mods: Rotofab | LS3 Heads, Intake & Cam | Kooks LT | Solo Exhaust | Tien Springs w/ GXP Struts | Whiteline Swaybars | BMR Subframe Connectors
Achievements: Guinevere - 264k mi | 16.27 @ 84.10mph | March '11 COTM :: Chloe - 223k mi | 13.85 @ 102mph | January '09 COTM :: Abigail - 192k mi | 12.85 @ 112mph

Take lots of pictures, and get baggies for all the bolts. Aside from that, nothing else....

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2012 Chevrolet Cruze Eco - Current car

1999 Buick LeSabre Custom - Former car

Learn from the mistakes of others, that way when you mess up you can do so in new and interesting ways.

I replaced my heater core about 6 months ago. It went better then I thought it would. It does get pretty cramped working on the floor but I was able to get it done in about 4 hours. The thing I had to do was remove the glove box and drill about a 1/2 inch hole in some structural plastic behind the glove box in order to see the screw that was holding up some of the ductwork that needs to be removed. Once you put the glove box back in you will not be able to see the hole. The repair manual says that you do not have to put that screw back in when reassembling the ductwork. It seems to stay in place just fine. Not sure how a person would ever get that screw back in cause it was a pain getting it out.