Question about 1999 GMC Jimmy
Well the check engine light ios probably on. The transmission is trying to start out in 3rd gear. You may have lost the neutral safety switch. These switches do not act like the old ones. They are mounted on the side of the 4l60E transmission. Try this first. Purchase a new neutral safety switch from GM (only). Have it installed and then clear the codes. Your tach and speedo should work and the trans should also work again. Hope this helps.
Posted on Feb 05, 2009
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