shift indicator lights

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shift indicator lights

Unread post by Leslieas1 » Tue Jul 08, 2014 7:44 am

I have a 2005 GMC Yukon Denali with led shift indicator lights. The rest of the panel works fine but slowly, over the last year or two, the shift indicator has gone dimmer and dimmer to where now I can't see it at all but just have to count the clicks. I have read about whole clusters going bad but the rest of mine seem fine. Any suggestions?


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Re: shift indicator lights

Unread post by carriedi » Wed Jul 09, 2014 4:42 am

the PRNDL display may display blank if the PCM detects a problem with the trans range switch circuit. The IPC recieves a class 2 message indicating the park position and the column park switch shows a position other than park. The IPC sees a loss of class 2 communications with the PCM.

Or the lights could be out...
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