How do you drain radiator coolant in Chevy Silverado?

After reattaching the lower hose, remove the upper hose and start the truck. While in the cab, turn on your heater to hot. Run water from the garden hose into the coolant reservoir tank, and run the engine until clear water begins to run from the top hose.

Why does coolant drain from the engine block?

Those engines are designed to hold coolant in the block in case there is a catastrophic leak in the coolant system. They probably don’t recommend it since you can get air pockets in the block (unless you apply a vacuum to the system to pull out the air).

How much coolant do I need to drain and Flush my radiator?

You should have between 1 1/2 and 2 gallons in the fluid bucket or catch basin. Be sure the radiator cap has been removed which will help you get most of the coolant out if the system. Then tighten the drain plug or reinstall the lower radiator hose. 4.

What kind of car has coolant drain plugs?

Drives:2011 “Sheer Silver” Silverado 4X4 LTZ CC 6.2L/3.73 “max trailer pack” with a Black Bear tune, baby! Rocko, your Corvette does have those drain plugs “for your convenience”.

Where is the drain valve for radiator coolant?

Draining the Coolant Most car’s have a radiator drain valve that will be visible at the bottom tank or on either side tank. If a valve is not available loosen the lower radiator hose and slowly remove it from the radiator to initiate the draining process. Open the drain valve by turning the it counter clockwise.

What should I put in my coolant block drain plugs?

As an added precaution, as I stated before, I add the GM coolant supplement, made by Barsleaks for GM, #12378255. This additive has been put in virtually every new car for at least 20 years. Not only is it a stopleak, but it contains rust inhibitors and soluble oil. I also add Kool-it to the mix.

Can You flush coolant out of an engine block?

First, no matter how much coolant has drain out of the system there will always be some left in the engine block which will be difficult to remove just by draining the system for the first time. A flush machine can be used but the problem is most states have outlawed these machines do to their waste coolant expulsion into the environment.

What happens when coolant drains into the radiator?

As the coolant drains from the reservoir, pour the remaining full-strength coolant into the reservoir and allow it to drain into the radiator before adding more 50/50 mixture. A higher content of anti-freeze in the system than intended is not a benefit! Often times, this can reduce the efficiency of the cooling system to dispel heat. Figure 3.

How do you remove a radiator hose from a truck?

Figure 1. Squeeze the spring clamp together with your pliers, and then pull off the hose. Removing the cap from your coolant reservoir will allow air in, which helps smooth the flow of coolant from the radiator and hose. After reattaching the lower hose, remove the upper hose and start the truck. While in the cab, turn on your heater to hot.