CHEVROLET TAHOE INSTRUMENT CLUSTER GAUGES TACHOMETER

When I Start The Engine The Tachometer Pegs Out Clear Around 360° And Stays There. My Speedometer Is Bouncy Also. My Fuel Gauge Don't...

I Recently Got My Dashboard Replaced The Plastic On Top And A Few Days Later My Speedometer And Rpms Stopped Working The Other Ones Work...

Truck Was Running Fine Until I Replaced A New Flow Master Exhaust Muffler A Month Ago. Everything Was Good Until I Started Noticing Low...