check gauges light

1990 GMC C1500
300,000 MILES
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NICK2586
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  • 7 POSTS
My check gauges light comes on wild the air is on and under braking conditions. What would cause this?
May 23, 2012 at 11:28 PM
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ASEMASTER6371
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is anything reading out of range on the dash gauges??

Roy
May 23, 2012 at 11:31 PM
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NICK2586
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  • 7 POSTS
Every gauge on the dash reads ok.
May 24, 2012 at 11:34 PM
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NICK2586
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  • 7 POSTS
I have recently noticed that the oil pressure gauge is reading low
May 31, 2012 at 2:41 PM