CHEVROLET SUBURBAN INSTRUMENT CLUSTER GAUGES TACHOMETER

I May Seem Like A Lost Cause, I Get Rpm Signal Crazy And Sometimes I Don't Get Nothing. Noticed Oil Pressure Gauge Goes Crazy Too Then...

I Have A 1995 Chevy Suburban 1/2 Ton With The 350 And 237,000 Miles. This Has Been A Great Truck With Normal Maintainance Issues Until Now...