Question about 1998 GMC Sierra

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Tach, speedometer, and odometer do not work. tranny dont down shift.

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The ignition switch needs to be replaced,not the key switch but the actual switch and harnes9comes together.when this is deftive you have the abive symtoms but only 3rd and reverse will work.try tapping the switch,if the tach ect. starts working so wil the tranny,repace the switch.

Posted on Jul 29, 2009

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