Last post on Sep 24, 2013 at 10:57 AM
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Chevrolet Suburban, Chevrolet Tahoe, Chevrolet Tahoe Limited/Z71, SUV
#1 of 15 2007 Suburban LTZ Power Running Boards
Oct 10, 2009 (1:29 pm)
I recently had my battery replaced. After it was replaced, the power running boards do not work any more. I have tried switching them on and off. When the battery was replaced, the power running board switch was in the off position.
#2 of 15 Re: 2007 Suburban LTZ Power Running Boards [joeykb]
Oct 10, 2009 (3:22 pm)
Did you check the fuse?
#3 of 15 Re: 2007 Suburban LTZ Power Running Boards [kiawah]
Oct 10, 2009 (4:59 pm)
Yes, Sorry I did forget to mention that I replaced the 30A fuse.
#4 of 15 Re: 2007 Suburban LTZ Power Running Boards [joeykb]
Oct 10, 2009 (5:29 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 15 Re: 2007 Suburban LTZ Power Running Boards [kiawah]
Oct 11, 2009 (7:41 am)
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 15 Re: 2007 Suburban LTZ Power Running Boards [joeykb]
Oct 11, 2009 (8:02 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 15 Re: 2007 Suburban LTZ Power Running Boards [kiawah]
Nov 24, 2009 (7:17 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 15 Re: 2007 Suburban LTZ Power Running Boards [joeykb]
Aug 15, 2011 (9:38 am)
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 15 2007 Suburban LTZ Power Running Boards [brian_r]
Aug 26, 2011 (7:47 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 15 Re: 2007 Suburban LTZ Power Running Boards [was55555]
Aug 26, 2011 (8:12 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.