gmc 97 savanah temp gauge

Rita Smith

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97 savanah 1500 350 - have replaced 2 temperature sensors for unrelated proplem solved that problem, but now when we drive maybe a mile the temp. gauge starts rising until the check gauges light comes on, then the gauge backs down a little, light goes off. water is not boiling. have changed thermostats twice in 6 weeks. any suggestions appreciated
 
Replaced your water pump and flush your radiator coolant. Goodluck
 


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