2020 Denali power running board fix

[Glava2876]

I was having problems with the power running board on the drivers side of my 2020 Denali.

It would start out and then go back in after about an inch. I did some spray lube on the arm attachment points and could get it to work after assisting manually. But after a couple of days it did the same thing.

Googled and found the attached, which has the repairs for this problem and others that are common to the power running boards.

I did the arm removal, cleanup and lube recommendation, which required no parts and took a little over an hour.

This running board works perfect and just as smoothly and fast as the passenger side.

Thanks to the crew that posted this great help source.

https://www.camerasource.com/industry-news/gm-articulating-running-board-repair/

[repairman54]

Tri Flow lubricant worked the best for me on my old '11 Tahoe factory power boards. I just would spray the pins/bushings every few weeks or when they seemed to slow down. 

[Glava2876]

The penetrating oil spray was a temporary for me. Even when I’d work them each time, they were still slow.

When I took the arms off, I could see that seals kept much lubrication from reaching the pins. The build up was a weird film-but once fine paper cleaned up and lubed, everything worked like new.

[KMP259]

When taking the running boards apart….you should install Zerk fitting in the articulating arms so you can grease the pivot points every oil change….

[cola]

I have a pair of these boards I took off my 2019 Denali sitting in the garage I would like to get rid of.

909.380.9066

[Fltmech1]

On 6/1/2024 at 1:13 PM, cola said:

I have a pair of these boards I took off my 2019 Denali sitting in the garage I would like to get rid of.

909.380.9066

What did you replace them with and if so are they plug and play?

[Fltmech1]

I had the typical Deploy and stay deployed or not deploying at all. The stealership said it was the motor and wanted $1400 to fix it. I told them I would just replace both hem with better ones for that.

I removed cleaned and lubed the running board and motor and all worked well for several months now nothing.

I read where it could be the module or the switch on the end cap.