Skip the auto shop - Our mechanics make house calls

Q: Truck overheating coolant not cycling throughout engine. 2002 Chevrolet Silverado

asked by on

Just put in a brand new water pump and thermostat. Over heating wasn't an issue before I replaced waterpump & thermostat. Prior my only issue was a leak from a wobbly waterpump pulley (no longer a problem).

My car has 193675 miles.
My car has an automatic transmission.

A: Hey there, thanks for writing in. You need ...

Hey there, thanks for writing in. You need to make sure all the air was purged out of the cooling system. If you did not get at least 2 gallons of coolant mix in the engine, then you may have excess air in the system. Check that the cooling fan clutch is locking and radiator is getting hot - not just the engine. If the top radiator hose is cold and the engine is hot, then your new thermostat is stuck closed. If you need assistance with this, I recommend having all of these items checked for you in order to have the overheating issue diagnosed and repaired correctly.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: If I accelerate my heat blows hot....idle speed blows cool and overheats if at an idle

The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater...

Q: Motor warm up takes too long

If you are in an extreme cold climate then your engine will take longer to get to operating temperature if you get on the highway right away. If you before you leave your driveway hold your engine at 2000 rpms...

Q: Engine die when get hot

If your engine is shutting off when it gets hot it is possible that it could be overheating. Many vehicles have a feature built into the engine that will kill the engine if it reaches a certain temperature. For an...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...