Power Windows

[marpel]

'22 Sierra SLE 2500HD.

 

I have the power window controls on the armrest as well as the Express Window Down/Up control on the centre stack. I have had the truck for a couple months and have never used the Express Window feature.

 

However, I have found that, intermittently, I will briefly press the window down button (armrest) to crack the driver's window down an inch or so, and it will not stop when I release the button, and will fully open (at quite a quick speed). If I try to stop the window from continuing to drop, and pull the button up, it will shoot back up to fully closed, even if I again release the button before it closes.

 

As noted, this occurs intermittently, and without warning, so I find myself being surprised by the window not stopping and begin an up/down chase to get the window to stop where I want. Most of the time, after a few attempts, I just fully close it and give up. Strangely, I can try it a few minutes later and it will operate as it should and stop when I release the button.

 

I read through the appropriate section(s) in the manual and see no reference to this but just want to make sure I have not inadvertently changed something in settings or similar to cause this behaviour. 

 

If anyone can offer advise/suggestions, much appreciated.

 

Funny enough, while in getting an oil change the other day, I asked the service rep to check the 7 pin connection (having trailer brake issues and wanted to confirm the truck was not to blame). He attached a diagnostic tool and advised me it shows an issue with the brake and right side running lights. As his check was only cursory, he had me arrange an (possibly all day) appointment for next week so the tech can run a full diagnostic.

 

I also wonder if the two issues may be related to a single module, although I don't know enough about these things to know if that is even remotely possible.

 

Have had the truck for only a couple months and already......

 

Marv

[NWStever]

4 hours ago, marpel said:

'22 Sierra SLE 2500HD.

 

I have the power window controls on the armrest as well as the Express Window Down/Up control on the centre stack. I have had the truck for a couple months and have never used the Express Window feature.

 

However, I have found that, intermittently, I will briefly press the window down button (armrest) to crack the driver's window down an inch or so, and it will not stop when I release the button, and will fully open (at quite a quick speed). If I try to stop the window from continuing to drop, and pull the button up, it will shoot back up to fully closed, even if I again release the button before it closes.

 

As noted, this occurs intermittently, and without warning, so I find myself being surprised by the window not stopping and begin an up/down chase to get the window to stop where I want. Most of the time, after a few attempts, I just fully close it and give up. Strangely, I can try it a few minutes later and it will operate as it should and stop when I release the button.

 

I read through the appropriate section(s) in the manual and see no reference to this but just want to make sure I have not inadvertently changed something in settings or similar to cause this behaviour. 

 

If anyone can offer advise/suggestions, much appreciated.

 

Funny enough, while in getting an oil change the other day, I asked the service rep to check the 7 pin connection (having trailer brake issues and wanted to confirm the truck was not to blame). He attached a diagnostic tool and advised me it shows an issue with the brake and right side running lights. As his check was only cursory, he had me arrange an (possibly all day) appointment for next week so the tech can run a full diagnostic.

 

I also wonder if the two issues may be related to a single module, although I don't know enough about these things to know if that is even remotely possible.

 

Have had the truck for only a couple months and already......

 

Marv

Marv -- The secret to crack the window open is to push down twice in short succession. The first push starts the window down and the second push stops it. Much easier to crack open the window this way than to fight it as you describe. The reverse also works... start with window fully open, then pull up once to start the window up and finally pull up second time when window reaches the cracked open target. Easier to get the desired crack height this way as you'll have more time to prepare to engage the second pull.  Try it... you'll like it. 

 

Cheers

[marpel]

NWStever,

 

Thanks for the reply.

 

Is this secret the bona fide GMC instructed method or just something you have figured out?

 

The reason I ask is, as mentioned, I perused the manual and the only thing it said was to lower, push the button down and release to stop, and to raise, do the opposite.

 

And, this push/release, pull/release does work some times (that's why I mentioned that the full blast down/up surprises me at times as it often works as expected....then it doesn't).

 

And I often wish to open/close half way or so (rather than just a crack) and it will proceed full when releasing the button. Just trying to determine if what is happening is intended. If not, I will have them fix it when I take it in for the other issue.

 

Thanks again,

 

Marv

[gemarsh]

You are pushing to far of the stroke of the button, initiating the express/auto down.

 

If you push the button just a little, half or less of the total button travel, it will stop when releasing the button. It's very subtle but a person can feel where the detent is, to execute express down.

 

And the same for the up travel.

[NWStever]

Gemarsh --  Thanks for the clarification.  I too had never tumbled to the subtle procedure you described. I tried today and yes it works but it is hard to  not over-push the button. I'll continue with the procedure I described.

 

Marpel -- I'm not sure how I came to learn the procedure I described but I did learn it on  my now traded-in 2018 Canyon.  Glad it works on my new GMC 3500 HD. 

[Another JR]

The secret double push method nwstever has revealed is carefully hidden in plain sight on page 42 of the owners manual. I hadn’t picked up on it either until I saw this thread and looked at the manual. The manual says:

 

Windows Express Movement
  
 All windows can be opened without holding the window switch. Press the switch down fully and quickly release to express open the window.
 
If equipped, pull the window switch up fully and quickly release to express close the window.

 

Briefly press or pull the window switch in the same direction to stop that window’s express movement.