BUICK LA CROSSE INSTRUMENT CLUSTER

Last Weekend While Driving My Car, My Speed On The Speedometer Jumped From 45 To 65 With Out My Having Excelerated. Now When I Drive Down...

When I Put The Keys In The Ignition And Turn To "on", The Instrument Cluster Goes Haywire And If I Go Directly To "start" It...

The Milage And Temp Gauge Are Not Working. They Are Dark. All Other Dash Lights Work Fine. At Night They Come On, During The Day Light Hours...

How Can A Odometer Reading 129,000 Miles Just To 245,000 Klm By Itself. I Didn't Change It And Don't Even Know How To.