My wife has a 1996 GMC Savana. The battery was dead this morning but, charged up normally after about 1/2 hour. When we left to drive the van around to recharge it, she noticed that the speedometer needle was not working. When I looked at it, I saw that it appeared to have pegged past the maximum mph and was on the wrong side of the post(zero).
Any ideas what would cause this? Thanks in advance.