water disappearing

5

Asked by Nov 23, 2016 at 04:34 PM about the 1996 GMC Sierra 1500 C1500 SLT Extended Cab Stepside SB

Question type: Maintenance & Repair

Water in radiator has to be refilled every couple of
days with no leaks found anywhere and it's not
overheating

4 Answers

86,775

Could be a couple of things, the intake gaskets are a known problem with this engine, it could be sucking coolant right into the combustion chambers when running and the other is blown headgaskets also a common failure, you should look at the engine oil if it is milky colored then it is very likely that the headgaskets are blown, a block check will verify this. If the oil is milky and the block check says the headgaskets are fine then it is the intake gaskets.

1 out of 1 people think this is helpful.
5,695

Need to get it checked because it sounds like it's leaking into the combustion. Cracked head, block or bad head gasket

1 out of 1 people think this is helpful.
61,075

With the engine cold, pressurize the cooling system with a pressure tester. The system should hole the pressure for 15 minutes, minimum. While you're waiting, especially if the pressure is dropping, carefully look and listen for the leak. Is the coolant level going down in the radiator or just the plastic recovery tank? HTH. -Jim

1 out of 1 people think this is helpful.
40,135

It's done, have it crushed.

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