Is there anything that I can use to lubricate the window run channels that will allow the electric windows to raise & lower easier?
I can't remember what I used, borrowed the stuff...I'm sure one of the others can tell you. 1987 wagon,,,GM wagon to boot? I'd inspect all conections, all grounds for corotion if your windows are 'slow'. A crusty looking ground was the problem on my 83's drivers door. once fixed the window worked fine. Also, I can't remember the member but there was a post on slow tailgate window....again it proved to be conections and nothing to due with lubrication. But, IMO your on the rite track, if you have the door panels off....lube....but clean ALL conections and inspect wiring
I was having the same problem. The front passenger window even required me to bring up the RPMs a bit so it would have enough ooomph to get the window all the way up. I removed the door panels and swabbed some chassis grease into the tracks. The windows move smooth as silk now.
Frequently it is just a build up of "you name it" on the lower exterior seal. With windows all the way down clean the inside of that strip real good. On rear windows that do not roll down all the way, you will need something like a thin spatula with a lint free cloth. I use Rosonol lighter fluid and then alcohol or glass cleaner. Do NOT use lighter fluid on interior of tinted windows. You will be surprised how much effect a little tree sap has on the performance of electric windows. Another preventative maintenance tip is to roll all windows up and down at least once a week. We often forget about rear windows.
Tailgate window Ok...in going with this theme. My 1990 Custom Cruiser that I bought last year, was not used alot by a 92 y.o. The tailgate window rides back up slow, but steady and without stopping. The way DOWN however,,...requires repeat ups and downs , just to get it close, and then a small press with a hand to make it go in. It seems like it would be more a lubricant problem than a motor problem ? True ?? You guys know everything. Enlighten me ?? I 'll spray silicone spray if I can do it from above ...I'm afraid to rip anything apart yet.
Go down to your local RV store and buy yourself a can of silicone spray. Works well and doesn't change the color of the felt. Doesn't smell bad either.
