How do you take out and put in a heater core in a 92 Jetta GL?

Replacing the heater core isn't too bad AFTER you've learned how to do it. It took me quite a while to do it. If you have AC.... have fun.

I started before finding the guide. Already 1/2 way into it and was pretty lost.

Heres the guide I somewhat follow to do mine, and it helped out alot. Even though there were differences, it's a Jetta II replacement.

Use bags and clearly label them as you start pulling nuts and bolts and screws off. Theres alot, and you'll get pretty confused without doing it....

http://forums.vwvortex.com/zerothread?id=3581605

Prepare for a good weekends worth of work. Good luck