This simply slides over a retaining post. The air inlet housing attaches to the throttle body via a large hose clamp and is held down to the plenum with a rubber grommet. The bottom rubber hose attaches to the intake and heater hose coolant fittings.Īnd if you have a low coolant light on the dash panel then you'll have a coolant level sensor mounted in the lower part of the coolant reservoir.īefore we disconnect the hoses and remove the 10 mm retaining bolts we have to get the air induction system out of the way. The upper recovery hose attaches to the radiator. There are two, possibly three connections, to the Chevrolet radiator surge tank. With a couple high flow fans the engine can reach ambient temperature in as little time as an hour, depending on weather conditions. We can accelerate this by placing fans blowing upwards through the engine compartment. Mechanics have a trick for removing the heat quickly from an engine. Before we begin repairs, the engine needs to be at ambient temperature. Update: If the new part comes with a 20 PSI radiator cap, reuse the original 15 PSI cap or get a new one. In some cases customers describe their first clue behind a Chevrolet radiator surge tank problem as drops of coolant in the driveway. As the coolant level begins to fall even further drivers may experience lack of heat and then eventually an overheating situation from the engine. This is what generates the surprisingly loud gurgling noises while you're driving. As the system becomes low, it pulls air into the Dex-Cool anti-freeze causing bubbles. Some of the symptoms that point towards this issue include a gurgling sound from the heating system located on the passenger side firewall. Although there are a few common areas the overflow bottle leaks from, the lower hose connection often develops hairline cracks. Remember that you check the level when the engine is cold at the cold fill line on the reservoir. The obvious sign that you have a problem with the Chevy radiator surge tank is consistently low antifreeze levels in the reservoir itself. As a professional technician we have a few tricks to remove the heat from the engine and the cooling system so that you don't have to wait 24 hours to begin.įinally, we'll talk about what kind of antifreeze mix you want to add to these General Motors cooling systems. Unfortunately our busy schedules don't always allow for these perfect conditions. Ideally, you'll walk out to the driveway after the vehicle sat overnight to perform these repairs. With that said, whenever we talk about working on a cooling system we're talking about a vehicle that is completely cooled down. In addition, we'll talk about some of the important steps that can make this fairly easy job even less complicated. In this article we'll talk about why the Chevrolet radiator surge tank is failing on these specific models from 2007 - 2014. With a cost less than $60 and the labor involved straightforward, it would appear that an ounce of prevention is worth more than a pound of cure in this situation. In fact, we'll provide an argument of why maybe you should replace it before it actually cracks and starts leaking. Of course, this coolant recovery tank problem also includes the GMC Sierra, Yukon and the Chevrolet sport-utility vehicles like the Tahoe and Suburban.ĭespite the radiator surge tank being made out of extremely thick plastic, chances are you'll find yourself replacing this at least once in the vehicles life span. The 2003 and older trucks have the same issue, but the reservoir looks different as shown below. This is especially true if you own a Chevrolet Silverado from the 2007 through 2014. No matter what you call your Chevrolet radiator surge tank, the chances of the original equipment part making it all the way through the lifespan of the truck remains small. In the old days we called it an expansion tank, but referring to it as a coolant reservoir or the radiator overflow bottle also seems like valid nomenclature. The Chevrolet radiator surge tank is one of those parts people call many different things.
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