Allison NSBU Switch, 2001-2004 LB7

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Fits: 2001 thru 2004 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7 Duramax Diesel One of the most common problems with the Allison transmission is failure of the Neutral Start Back Up switch. Replace it with this Genuine Allison part. Some of the symptoms of failure include but are not limited to: No start condition Gear shift indicator on dash not following properly Trans stuck in limp mode or fail safe DTC's set indicating pressure switch codes This switch easily installs with just common hand tools. Features: Genuine Allison Part Show more