2008 Pontiac Grand Prix 6 cyl Automatic 50000 miles
I was driving down the road today and looked at my speedometer and it said that I was going 115mph and I was going about 55mph (Close Estimate). I pulled over and it went down to 0mph. I turned my car off and started it again, but when I took off it did the same thing, it was still saying I was going between 100mph and 120mph when I was actually going 50mph to 60mph. What could this be and is it serious?
have the same problem?
Saturday, August 21st, 2010 AT 8:42 AM