GMC C2500 INSTRUMENT CLUSTER GAUGES SPEEDOMETER

The Needle Is Bouncing When I'm Driving. At Points It Stops Bouncing But Doesn't Read The Correct Speed. I Replaced The Lower...

I Have A 2500 Chevy With 120,000 On It. Sometimes When Drive The Speedometer "sticks" Or Becomes Sort Of "jerky." Sometimes It Will Just...