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It could be one of 4 things.
1. Bad radiator cap
2. Lose hose clamps at either the heater core, radiator, intake or water pump.
3. Bad water pump
4. Blown head gasket
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∙ 14y ago
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What type of coolant goes into a 1991 Chevy truck?
Green coolant
What type of coolant does a 2001 Chevy Truck use?
It uses the ORANGE coolant.
Where is the Coolant temperature sensor on a 1991 Chevy truck?
sould be on the manifold
Why does your Chevy truck only blows heat when the truck is moving?
The heater core is stoped up / MAYBE. Are the engine is low on coolant, Check coolant level in radiator.
What coolant for1988 Chevy pickup truck?
The green color antifreeze will be just fine.
What does the coolant symbol look like and what does it mean on a 2003 Chevy truck?
it will say low coolant and it means you need to add a mix of 50/50 coolant and water to the overflow.
How do you repair a loose and sloppy steering in a 1984 Chevy truck?
replace the worn parts.
Why do the Water pump bolts coming loose on a 1996 Chevy truck?
try tread lock.
Why do i hear bubbling noises coming from the heater core on a 97 Chevy Silverado?
The coolant level is low in the truck.
Why is Chevy impala overheating and heat blows cold?
Possible causes: Insufficient/no coolant in the system; insufficient antifreeze in the coolant and the coolant is frozen: the water pump is faulty and is not circulating the coolant; the belt that drives the water pump is loose or missing.
How do you change a Chevy truck thermometer?
remove top rad hose on motor and then the coolant flange the thermostat is under the flange
Why would the temperature gauge in a 1996 Chevy truck fluctuate randomly?
Sounds like a loose connection at the coolant temperature sender. Or, the truck is low on coolant and air bubbles are passing by the sensor. This, along with a gurgling heater core, is a classic symptom of coolant that is too low before the truck overheats. Paying attention to these clues allowed me to fill up a friend's truck with coolant as it was almost a gallon low, and he didn't even know it was leaking (Dexcool). If you are losing coolant, you may have an intake leak. It is a common problem around 65 to 80 thousand miles. I would have this checked, you most likely won't see a leak, unless you look from below by the back of the intake. It ususally drips out there.
