I AM OVERHEATING PUM THERMOSTAT AND FAN RELAY ALL OK ,WHAT AM I MISSING?

2005 GMC Sierra

Tiny

ronjohnson1

September, 23, 2012 AT 7:06 PM

I have a 2005 gmc sierra with a 4.8 vortex engine. It recently began to overheat.I checked the water pump but it gives no sign of failure, I replaced the thermostat and the fan relay but it still is running hot. What do I try next?

FOUND 1832 RELATED QUESTIONS

Thermostat

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Thermostat

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1 Answer

Tiny

KHLow2008

September, 23, 2012 AT 7:16 PM

Do you have coolant losses?
When does the overheating occurs?
Are the cooling fans working?

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