1990 Gmc C1500 Replaced Coolant Sensor On 1500 Now Temp Gauge Max Out Check

1990 GMC C1500
240,000 MILES
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HANSENFL
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i replaced my coolant sensor on 1990 gmc 1500 and now the temp gauge max out and the check engine is on.
Dec 29, 2012 at 2:05 AM
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ASEMASTER6371
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check coolant level.

what is the code for the light??

Roy
Dec 29, 2012 at 2:55 AM
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HANSENFL
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Correction it was the Coolant Temp Sender. it controls my gauge. the coolant level is full and I have not yet gotten it tested for a light code. After i replaced the Sender unit I drove it for about 2 miles when the temp gauge maxed out and the light came on. Could it be my thermostat or could the new sending unit be faulty?

thanks
Dec 30, 2012 at 2:40 AM
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