Question about Chevrolet Silverado 1500

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What is the most common cause for coolant leaking on a Chevrolet Silverado 1500 5.3l vortec

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  • 182 Answers

Both Heater hoses,, check both ends,, made of plastic ,,they will crack and leak with engine running and not leak when it's off sometimes

Posted on Jul 21, 2019

  • taterhead 3e Jul 21, 2019

    Both Heater hoses,, check both ends,, made of plastic ,,they will crack and leak with engine running and not leak when it's off sometimes



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6ya staff

  • 2 Answers


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Posted on Jan 02, 2017


Marc Podeszek

  • 840 Answers

SOURCE: engine coolant leak

no there is not but take in to a gm dealer right away/Please rate my response thank you very much

Posted on Feb 02, 2009


Onifade Adewunmi

  • 2004 Answers

SOURCE: coolant leak on chevy silverado. what is the

Check you return/ coolant bottle to see if the hose is not well fitted. Else you might need to change your radiator.

Rate this.

Good luck

Posted on Apr 06, 2009


  • 295 Answers

SOURCE: 1997 subaru legacy 2.5l coolant leaking from

Known head gasket problems on those cars. Suburu dealership have a good product called stop leak. Use that first add a bottle into the radiator run the car to operating temp. Recheck the belly pan for leaks. hope this helps.

Posted on Jul 08, 2009


T Moss

  • 265 Answers

SOURCE: I have a coolant leak on my 2001 chevrolet

You need to pressure test the system to determine exactly where the leak is coming from...Because it could be any hose, pipe, or even the intake manifold gasket...But just pressure test it, and that will save you alot of time and money...

Posted on Dec 12, 2009

Ted Schore

  • 7353 Answers

SOURCE: How to pull the EGR Valve off of a 1994 Chevrolet

it should just bolt on with 2 bolts.

Posted on Sep 07, 2010

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I have a slow coolant leak, gallon every two weeks. at first it was the radiator - had it replaced, then hose connectors on top of engine - had them replaced, then bad connection on radiator hose - had it...

Hi, there are 2 common locations for a coolant leak on a vortec engine. The water pump, and the intake gasket. A coolant pressure test may show the leak better. There is a weep hole , or a vent hole, at the bottom of the water pump. This should be checked, as well as the edgesnof the intake, and the front and rear of the intake. Chances are you will find the problem in these areas. Good luck...Coop

Sep 21, 2011 | 1999 Chevrolet K1500

1 Answer

Need best way to clean coolant from crank in 5.7 chevy

Not good my friend most or all of the coolant should be gone by now. sounds like you might have a hairline crack alowing antifreeze to newly enter your crankcase. Antifreeze in an engine for more than 100 miles turns into a creamy foam that exits your drain plug. and if the engine overheated and stalled out definitly. sorry Man.

May 27, 2010 | 1999 Chevrolet Silverado 1500

2 Answers

1999 5.3 vortec silverado 4x4. Engine intermitient hard start.

Pull the plug and inspect the color, are any of them whitish, could be coolant leaking into the combustion chamber,

May 13, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

I'm having overheating problems with my 2004 chevy silverado two wheel drive ext cab. I'm frequently havining to add coolant. I have not found any leaks and have not smelled any anti-freeze.

Check your transmission dip stick to make sure it's not going in to your transmission from a bad transmission cooler which is incorporated with the radiator.
The only other thing that i can think of, which is common is the intake gasket may have failed and your losing your coolant from there and being burnt through your engine. If it's a slow enough leak, your not going to see any coolant cause it's going through your engine's combustion chamber with the intake air.
Thank you for using fixya and good luck.

Apr 16, 2010 | 2004 Chevrolet Silverado 1500 Crew Cab

1 Answer

Where is the #6 spark plug on a 5.3 liter vortec silverado 2000?

third back pass side the coil is probably bad if you have a miss code common problem

Jun 01, 2009 | 2000 Chevrolet Silverado 1500

1 Answer

Water in oil

Hello, it seems that you have intake gaskets leaking. I'll bet you have the vortec 350. This is a common problem with the vortec, Gm uses plastic intake gaskets and they blow out over time usually to the externally but yours is internally.It is a pretty easy fix for the average mechanic to do. Thank you

Feb 28, 2009 | 2004 Chevrolet Silverado 1500 Crew Cab

2 Answers

Water in the oil? 96 Chevy Silverado 350 vortec?

Hello, it seems that you have a blown intake gasket. These are made of plastic and over time they crack they usually leak externally instead of internally. Thank you

Feb 28, 2009 | 1999 Chevrolet Silverado 1500

2 Answers

Cooling leaking inside engine

If it does there may be a recall on it. Always check with the dealer before doing a big repair. Even though the truck is old they may still do it for free.

Nov 26, 2008 | 1999 Chevrolet Silverado 1500

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