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For sale is a set of tri-fold running boards in great shape, includes required module.
These can be retrofitted to 14-18 trucks using a harness, there is a topic on how to install these.
Retrofit harness can be purchased from
$500 local pickup, will drive to meet for the right deal
By TruckGuy 94
I have a 2011 GMC Sierra Denali with a park assist problem I’m hoping someone can help me solve. A couple months ago, I started getting a sporadic “park assist blocked” error. This is pretty common as the sensors are covered in snow in the winter. However, I then noticed the sensors began to work sporadically even if they were clear. A month or so after that, the message changed to “service park assist” and the system automatically disables itself. The button on the dash shows the system is off all the time and when I try to turn it back on, the orange light flashes for two seconds but then disables itself again. I’ve checked the fuse and unplugged the battery but have not been able to get it to reset. Does this seem like a sensor issue or a control module? Any ideas for next steps? Unfortunately since the system is disabled all the time I can’t check to see if one sensor is malfunctioning as I’ve read about on other forums.
Update: when I started my truck once this week it randomly worked for 10 seconds then disabled itself again and hasn’t worked since.
I know there are a few different forums on this topic, but they seem to have gone dead. The steering in my truck clicks and clunks especially at low speeds, and the truck wanders on the highway. I am constantly holding the wheel to the left or right to go straight. I have had the intermediate shaft replaced per the service bulletin. After it was replaced some of the noises were reduced, but not eliminated and the truck will still not track straight especially at highway speeds. It almost feels like a bad tie rod end or ball joint, but the dealership said everything is nice and tight, and I checked just for my sanity. I also added a steering stabilizer in hopes this would help. Is anyone else having these issues, and have you been able to get them fixed?
2020 Silverado LTZ with 6.6 DuPIT5809.pdframax
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