Photo 1 of RY-1556 Diesel Glow Plug Controller Fit for Chevy Silverado 2500 3500 2001-2005 for GMC Sierra 2500 3500 2004-2005 for Cadillac Escalade/Chevy Tahoe 2005 Replace RY1556 97304030 97379635

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Photo 1 of RY-1556 Diesel Glow Plug Controller Fit for Chevy Silverado 2500 3500 2001-2005 for GMC Sierra 2500 3500 2004-2005 for Cadillac Escalade/Chevy Tahoe 2005 Replace RY1556 97304030 97379635Photo 2 of RY-1556 Diesel Glow Plug Controller Fit for Chevy Silverado 2500 3500 2001-2005 for GMC Sierra 2500 3500 2004-2005 for Cadillac Escalade/Chevy Tahoe 2005 Replace RY1556 97304030 97379635