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Discussion Starter · #1 ·
Can anyone make any sense of this clicking and blinking indicator light? Parking assist and Stabilitrak are erratically on, off, & flashing as well. Truck will rev and kick into next gear when shifting… then sometimes it runs like a brand new truck…

2009 GMC Sierra 2500 HD
6.6 Duramax turbodiesel w/ Allison

tune: H&S Performance Mini Max
 

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