Hello all. I have a 1996 Pontiac Grand Am 3.1 6cyl. I'm having problems with the engine rpm indicator, specifically the engine rpm indicator goes erratic intermittently, It just keeps going back and forth then it goes back to normal then a few minutes later it happens again.. It also effects the other panel cluster indicators such as the gas gauge, speedometer and gas gauge. I don't know what it could be. If anybody know what it could be and what to look for please respond to this post. Your prompt replies will be appreciated.
Thanks