Hello, I have a 1991 GMC Sierra extended cab 5.7L. I have a problem with my gauges, the lighting on the cluster wont turn on. The signal,check engine. and some other lights work. But my speedometer, RPM,oil,battery, temperature, fuel meters its lights wont turn on. I have replace the dimmer switch and nothing happen. Do I need to replace the whole cluster? Or do I just dont have good ground for it? Plz helppp I have no idea what can be going on
				
			 
	
