My 2004 blazer 2 door has a water leak on the drivers side door coming in from the top. I can't seem to figure out why. The weather striping seems to be all intact. Any help would be appreciated.

 

Door hinge bushings.
They get worn out or mushed/mangled or something so the door is off just enough to keep the weatherstripping from sealing. Someday I need to get around and replace them on mine as well.

ETA - there are several threads around here on how to replace them. Give me a minute and I'll find a link

Here you go

That's my guess anyway, hopefully someone else will be along to correct me if I'm full of it.

 

I agree, door hinge pins and bushings are bad. Easy way to do it is with a ratchet strap over a ceiling joist, through the window opening and hang the door. Unplug the wire harness, remove the spring, remove the pins and the door, just let it hang while you replace the bushings. Piece of cake, maybe 15 minutes with one person, and no risk of scratching the door or the fender. Replace both pins and all 4 bushings... about $10 in parts.

 

Thanks! I will definitely try that.

 

Easy way to do is with a jack, a towel and a buddy. I just did mine today in less than 5 mins. Put the jack at the far end of the door. Pop out spring. Knock lower pin loose but do not remove completely. Knock upper pin out. Door will have enough play to get it out of the way to R&R upper bushings. Replace pin partially. Repeat steps for lower hinge. Finally knock pins into bushings completely.

 

Make sure you have that spring compressor. I put duck tape on the door and fender to avoid scrapes

 

yea you gotta that compressor. I did my driver door last summer. Ive still not put that spring in yet. ive tried channel locks,etc etc......that spring is a tuffy.

 

The tool need is pretty cheap, about $10 or so IIRC. Makes the jobs SO MUCH EASIER!!!