08 suburban 5.3 temp rise
#1
08 suburban 5.3 temp rise
I have a 08 suburban with a 5.3 engine. When I leave work I have about a 5-10 minute drive 35-40 mph before I get to the highway. Right before I get to the highway my temp is pushing 240. Once I get on the hwy and going 55-60 mph, it cools down to 210. After I get off the hwy, and I’m pulling into the neighborhood, it starts creeping back up on me. Anyone have any suggestions?
#4
Make sure both fans are actually moving air. Blades not slipping on the shafts, condenser or radiator fins not plugged. If thermostat was stuck closed it would never cool down. I don't know if there are water pump impeller issues on the 5.3 myself. Cooling system full and holding pressure.
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