hey all, just bought a blazer and the front windows are stuck in place, the drivers about 3 inches down, but i have rain guards so its not bad, but anyway, im wanting to drill out the regulator and motor and clean them up and see if i can get them unsiezed, if not, im gonna buy a new motor, any idea what bolts and how many i need for a job like this?

any input appreciated, and many thanks...

 

I can't tell you what nut/bolt size you'll need off the top of my head but make sure you use lock washers and/or lock nuts upon re-assembly. Chances are you'll need a new motor but make sure everything checks out first. Could be a bad electrical connector or the glass may be binding in the channel. Dorman is the only aftermarket manufacturer that makes a replacement motor for our trucks (that I'm aware of). I installed one in my truck about a year ago and so far so good. If you buy this kit all the mounting hardware is included.
The factory rivets that hold the motor to the door will drill out easier if you knock the center of the rivet out with a punch. Also make sure to properly secure the recoil spring and use caution when working with it. You may try searching the forum to get a better idea of how to service the window assembly.

 

This reply is a little late but when I replaced my window motors they came with all the bolts and washers needed. Just make sure you put the bolt head facing the outside.

 

I just replaced the power window motor on my 94 Blazer last week. Here's some information I wish I would have had before I started the job:

1. Tape the window up in place. That keeps it up out of the way so you can get the regulator arm wheel out of the window track easily.

2. Be sure and check the power and ground going to the window motor. That will ensure that the motor really needs to be replaced.

3. Drill out the center of the rivets that hold the regulator to the inside of the door. They will pop off easily with a chisel after that.

4. You can take the entire regulator assembly out before you have to take the motor off the regulator frame. That's when you want to install the bolt to hold the arm in place on the spring. All the instructions I saw about that step were confusing. Make sure you either install a bolt to hold everything in place or put a couple *VERY* heavy C-clamps on it. That spring is very tight and if it unloads unexpectedly it can seriously damage your hand. I used two heavy C-clamps and it was OK. Also, holding the frame in place makes it easy to reinstall the regulator in exactly the same place.

5. The Dorman kit includes all the necessary bolts and nuts to reinstall the motor to the regulator frame and the whole regulator assembly to the door. Use some thread locker on those bolts to keep everything in place on the long term.

6. I put the upper right bolt through the door and the regulator first. After that I hooked the motor up to the switch to fine-tune the position of the motor. With the regulator wheel back in the window track moving the motor back and forth allows you to line all the holes up properly to get the bolts in. Tighten everything down good and test it out before you put the door panel back on.

I hope some of this is helpful!

 

thank you, that was helpfull, i acctually broke down and bought the dorman motor yesterday and the drivers side works flawlessly now, the reason i was asking wich bolts to use though is becuase i have a motor out of a 93 comaro wich looks exactly the same from out of my truck, i deffinatly dont want to spend another $49 for another motor just so i have the right bolts/nuts to replace it... i used a grinder to grind off the ends of the rivets and then a punch to pop them out, it worked pretty good, also there is a hole in the gear and in the base of the regulator, you can put a screw driver in there to hold the two halves in place while you secure the motor, after that its just putting it in the door and moving the motor up and down to place the rollor on the track all in all it was pretty easy once i figured out what i was doing, although i did have help from someone with alot of inginuity.. with all that said, i did see the bolts that came with the kit and im hopeing i can find some similar ones for the passenger side so i dont have to buy another motor just for the bolts

 

You can definitely find the bolts at a good hardware store. It helps if you measure the bolts that you got with the replacement but there's nothing special about the bolts. Get lock washers or nuts with nylon inserts and use thread locker and you will be just fine.

 

I used 1/4" bolts about 1" long with nylon locking inserts. Always have. I put the bolt head on the inside and the nut on the outside. Couple of them are a paon but doable. Can't say enough anout locking the regulator arm. That spring can seriously hurt you. The rivet centers do knock out pretty easily with a punch then you just drill out what's left of the rivet. Done a bunch of them this way and never had a problem. Also check your window "clips" that ride in the guides. They cause more problems than you can imagine.