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Suburban LTZ Power Running Boards

12 messages,  Last post on Jun 25, 2012 at 1:00 PM

You are in the Chevrolet Suburban & Tahoe Forum.

What is this discussion about? Chevrolet Suburban, Chevrolet Tahoe, Chevrolet Tahoe Limited/Z71, SUV

Messages Page 2 of 2

#3 of 12 Re: 2007 Suburban LTZ Power Running Boards [kiawah] by joeykb

Oct 10, 2009 (5:59 pm)

Replying to: kiawah (Oct 10, 2009 4:22 pm)
Yes, Sorry I did forget to mention that I replaced the 30A fuse.

#4 of 12 Re: 2007 Suburban LTZ Power Running Boards [joeykb] by kiawah

Oct 10, 2009 (6:29 pm)

Replying to: joeykb (Oct 10, 2009 5:59 pm)
Make sure the ASC (assist step control) disable switch is not pressed.
 
The ASC has an error condition fault detector, and if it detects an error, it will disable the ASC until it has had 50 error free ignition cycles. I'd go try that first, before going much further. I'm wondering if changing the battery created an error fault for you.
 
If that doesn't resolve the problem, check under the vehicle, under the running boards. One side will have just a motor. The drivers side would have a motor and the assist step control module.
 
It'll have two plugs, one plug is a 6 prong plug, the other a 10 prong plug.
 
On the 6 prong plug, two rows of 3 pins. The pin #5 (a middle pin in one of the rows and a RD/BK wire), is the battery voltage. See if you have 13 volts there. If you don't, then you have a power feed problem to the control module. If you do, then you can choose to either take it to the dealer to see if they have a tool to run diagostics on the controller, replace the controller on the possibility that it has blown somehow, or live without the power steps.
 
Good luck, let me know how it goes.
 
I didn't get steps with mine, more to go wrong

#5 of 12 Re: 2007 Suburban LTZ Power Running Boards [kiawah] by joeykb

Oct 11, 2009 (8:41 am)

Replying to: kiawah (Oct 10, 2009 6:29 pm)
Ok, I cycled the ignition 50 times, by that I mean, I started and stopped the engine 50 times, removing the key between every cycle. I also checked the voltage on the #5 pin and it did in-fact have about 13 volts. I guess I will need to bring this to a dealer to get fixed. Thanks for your input.

#6 of 12 Re: 2007 Suburban LTZ Power Running Boards [joeykb] by kiawah

Oct 11, 2009 (9:02 am)

Replying to: joeykb (Oct 11, 2009 8:41 am)
Rats....that is unfortunate. Might want to do a price check on the price of a ASC controller, to know that prior to going to the dealership.....just so you aren't surprised if that is what they recommend.

#7 of 12 Re: 2007 Suburban LTZ Power Running Boards [kiawah] by jboudreau

Nov 24, 2009 (8:17 am)

Replying to: kiawah (Oct 11, 2009 9:02 am)
Well, after a few weeks of searching, I found the answer to the problem. After the battery has been replaced, the ASC controller goes into storage mode. To get them out of that mode, simply open all 4 doors and press the ASC controller disable button on and off 4 times. The running boards open and function properly. Thanks for everyone's reply.

#8 of 12 Re: 2007 Suburban LTZ Power Running Boards [joeykb] by brian_r

Aug 15, 2011 (10:38 am)

Replying to: joeykb (Oct 10, 2009 2:29 pm)
I also have a 2007 LTZ with Power Running Board issues. For about a week the driver and passenger side took turns on with board was going to work. Now for past couple of weeks only the driver side functions properly. The passenger side does not work when you open the door. Sometimes after starting to drive the vehicle the passenger side tries to do something, you can hear it trying to lower and retract.?? Could this be a aging battery issue? Or is there a more likely cause.

#9 of 12 2007 Suburban LTZ Power Running Boards [brian_r] by was55555

Aug 26, 2011 (8:47 am)

Replying to: brian_r (Aug 15, 2011 10:38 am)
Same issue here. 2007 LTZ. Passenger side is fine. Driver's side was inconsistent for about two weeks, and now is stuck in the up position. Any easy fix? If the dealer needs to fix this, any idea as to the cost? Thanks.

#10 of 12 Re: 2007 Suburban LTZ Power Running Boards [was55555] by brian_r

Aug 26, 2011 (9:12 am)

Replying to: was55555 (Aug 26, 2011 8:47 am)
I still have not fixed this yet. To be honest, I'm a little afraid to see how much the dealer will stick me for this. I'm not really sure what I want to do with these boards yet. I've had the truck for just over 1 year, and really wasn't too pleased with how the boards performed in the slush and snow. I'm thinking of maybe locking them in the down position for the winter, but I really don't like how that looks either! ?? Please let me know if you come up with anything, I'll do the same.

#11 of 12 Re: 2007 Suburban LTZ Power Running Boards [brian_r] by sbradbury

Jun 25, 2012 (12:46 pm)

Replying to: brian_r (Aug 26, 2011 9:12 am)
Did you ever get this looked at? I am having the same issue with my 08 Tahoe. My passenger side was working on and off, then all of a sudden started working great and my drivers side stopped. It is stuck in the out position. I can hear the motor click on to try and retract it but it doesn't move. I can't hear it try and move when i open the door, so it seems it alreadys knows it is out. When i close the door, it seems to try and retract it twice then i stop hearing the noise.

#12 of 12 Re: 2007 Suburban LTZ Power Running Boards [sbradbury] by brian_r

Jun 25, 2012 (1:00 pm)

Replying to: sbradbury (Jun 25, 2012 12:46 pm)
This is what I did. Last fall my wife had ACL surgury so I opened the doors to get them to drop, then I pulled the fuse. I ran it all winter with them down so I wouldn't have to deal with it. This spring I decided to take another run at it. I put the fuse back in, opened the doors and flooded both hinged joints with WD40 several times. This didn't clear it up right away, but I continued to open and close the doors, re-appling WD40 until they ran smoothly. They have worked fine ever since. It's unfortunate that there are no grease zerks on these. My guess is that I will need to continue to do this as they get sticky.

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