Derek Daniel Posted September 30, 2021 Share Posted September 30, 2021 Driver window dont go down at all ..passenger goes down slow ..any advice ? Link to comment Share on other sites More sharing options...
Philbo Posted September 30, 2021 Share Posted September 30, 2021 Most likely your window motors are going bad. It's a common problem on most older GM cars unfortunately. You can get the motors on rock auto for pretty cheap: https://www.rockauto.com/en/catalog/buick,1990,reatta,3.8l+231cid+v6,1019911,interior,window+motor,1516 I have never done them on the reatta, but I have on other GM cars and it is usually a bit of a pain. Link to comment Share on other sites More sharing options...
Philbo Posted September 30, 2021 Share Posted September 30, 2021 Here is the instruction on removing the window regulator from my 1990 manual just to give you an idea. I have had the trim off to replace the door handle on mine and it isn't too bad of a job. Link to comment Share on other sites More sharing options...
Padgett Posted September 30, 2021 Share Posted September 30, 2021 Not too hard, always replaced the rivets with screws. Feel Siemens are better than ACDelco. Link to comment Share on other sites More sharing options...
Philbo Posted September 30, 2021 Share Posted September 30, 2021 41 minutes ago, Padgett said: Not too hard, always replaced the rivets with screws. Feel Siemens are better than ACDelco. Good to know because my passenger one is a little slow, so I am figuring that will be in my not too distant future. Link to comment Share on other sites More sharing options...
Padgett Posted September 30, 2021 Share Posted September 30, 2021 Slow is usually a dragging window. Stops is usually the motor. Link to comment Share on other sites More sharing options...
Ronnie Posted September 30, 2021 Share Posted September 30, 2021 Dragging can be helped by spraying the tracks by sticking the tube on a WD-40 between the glass and the track. Then run the window up and down. Repeat. No need to remove the door panel. Just spray with the window down. 1 Link to comment Share on other sites More sharing options...
DAVES89 Posted September 30, 2021 Share Posted September 30, 2021 If you decide to go in the door don't worry about the two lower rollers. The top roller is the one Ronnie is referring to that binds up. The track is easy to get at and remove [3 screws]. Then pop off the roller and drill it out with a 3/8" drill. It will still snap on and roll much better. I did put grease inside the roller hole that I just drilled out. Then while you are in there take a look at the door actuator rubber on the shaft that trips the lock. You will see that the rubber will have a slice in it. Take a real small diameter piece of hose and slid it inside the rubber boot hole and slid it over the actuator shaft. I did not remove the actuator to do this I just forced it off installed the hose and forced it back on. The "action" on the door lock is much more positive. 3 1 Link to comment Share on other sites More sharing options...
fun car guy Posted October 1, 2021 Share Posted October 1, 2021 19 hours ago, DAVES89 said: If you decide to go in the door don't worry about the two lower rollers. The top roller is the one Ronnie is referring to that binds up. The track is easy to get at and remove [3 screws]. Then pop off the roller and drill it out with a 3/8" drill. It will still snap on and roll much better. I did put grease inside the roller hole that I just drilled out. Then while you are in there take a look at the door actuator rubber on the shaft that trips the lock. You will see that the rubber will have a slice in it. Take a real small diameter piece of hose and slid it inside the rubber boot hole and slid it over the actuator shaft. I did not remove the actuator to do this I just forced it off installed the hose and forced it back on. The "action" on the door lock is much more positive. In the case of my '89, the driver's side is fine but the passenger side seems to be binding and the drive gear slips. Although I have a replacement purchased from Jim Finn, I'm hoping I can find the problem and fix it with some lubrication. Link to comment Share on other sites More sharing options...
DAVES89 Posted October 1, 2021 Share Posted October 1, 2021 If it slips it's probably junk 1 Link to comment Share on other sites More sharing options...
Padgett Posted October 1, 2021 Share Posted October 1, 2021 Be vary careful of the spring, it can be dangerous. Link to comment Share on other sites More sharing options...
DAVES89 Posted October 1, 2021 Share Posted October 1, 2021 My mechanic buddy, Kendall did my window motor. He had 5 vice grips on it to hold it. he also had an air powered rivet gun. Drove all the rivets in about 5 minutes. Link to comment Share on other sites More sharing options...
Philbo Posted October 2, 2021 Share Posted October 2, 2021 The manual says to drill a hole and secure the gear (and spring) with a nut and bolt. I thought that was interesting. Not sure I would trust vice grips. I feel like there would bee too much risk that they slip. Link to comment Share on other sites More sharing options...
Padgett Posted October 2, 2021 Share Posted October 2, 2021 Best to take the manual's advice, that spring is strong. Link to comment Share on other sites More sharing options...
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