Question about 1999 GMC Sierra

1 Answer

I lose coolant every 1000 miles , with no signs of leaks on the ground, my truck has 165000 miles on it. 5.3 vortec motor

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • GMC Master
  • 6,674 Answers

Stop at rad shop & have then add dye to your coolant, then check exhaust with black light for signs. I believe intake gaskets were problematic on those too. You may want to check a dealer for any TSB's. Either way, dye test will give you an idea if it's going out the tailpipe.

Posted on Jul 20, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I am losing about 1/2 pint coolant every 1000 miles. the vehicle does not ovrheat at all.


check sump oil color
If grey that is coolant into the sump , probably from behind the water pump impeller
because water loss is not evident the fact that there is loss means that there is a leak some where
There is a drain hole under the water pump housing and if the seal is gone the water will leak out there under pressure and when operating and the coolant is lost in the air stream
Take it to an accredited radiator shop and have the system pressure tested

Feb 27, 2016 | 2006 Chevrolet Malibu LT

1 Answer

Losing coolant with no visible leaking detected


is their steam ir white smoke coming from the exhaust if so u possible have problem with a gasket leak can be head or intake either one will allow fluid into cylinders

Mar 31, 2014 | 2005 Dodge Ram 1500

1 Answer

1998 Chevrolet Cavalier 2.4L losing coolant quickly


Stop Leak--can't get that out & it will plug the heater core
& other things --- bad move.

Why are you driving a car with any coolant leaks?

You may have ruined the motor by now

We can't find your leak from the internet or guess where it is

Mar 15, 2014 | 1998 Chevrolet Cavalier

1 Answer

Honda dealer recomended to have the water pump and drive belt changed in my Honda CRV 2004. It has 62,000 miles on it. Can someone advise if it is true?


Unless the pump is leaking i don't recommend you spend the money, but it my bet they saw coolant stains at the shaft seal, and since a coolant leak can lead to overheating the engine the pump should be replaced any time it shows signs of leaking. A new water pump is much cheaper than a new engine by $1000's. You can do this yourself, it is very easy to replace.

Oct 11, 2012 | 2004 Honda CR-V

1 Answer

Smelling coolant in cab, no apparent leak, coolant level good


Check for water laying in the heater core box.Most likely the heater core is leaking.

Jan 25, 2012 | GMC Cars & Trucks

2 Answers

92 Toyota Camry, antifreeze leaking no leak found


have you had the undercarriage inspected for white stains from coolant, rust stains if your system is corroded? How many miles? has the water pump ever been replaced, that would be my guess, water pumps leak while the eng is running and the hot engine evaporates the coolant, so in many cases none on the ground. Also have the system pressure tested by a shop and put on a rack to check for signs of leaking under the car.

Aug 25, 2009 | 1992 Toyota Camry V6

2 Answers

Losing coolant in Saturn 1998 SC2, water pump recently replaced, mechanics can't find the leak. Any suggestions?


if it is leaking from the lower hose on the radiator then chances are it is dripping onto the ground and they wont notice it. Tighten the clamp and see if that helps.

Jun 24, 2009 | 1998 Saturn SL

2 Answers

Water mixing with engine oil on 1999 Suburban. No steam out the exhaust and no signs of backpresure in the radiator. Rumor has it that the 5.7 vortec engine had problems with the intake gaskets. Have you...


5.7's had all kinds of problems with intake manifolds but it could also be a head gasket leaking. One way to check is to pull out your spark plugs and have a look at them. One of them will should be really white looking, that is the cylinder where the coolant is leaking into. A good rule of thumb (but not always true) is that if the coolant is leaking into one of the cylinders at the very front or very back of the engine, it is an intake leak. If the coolant is leaking in one of the middle cylinders, it is a head leak.
But the only way to know absolutly for sure is to pull the intake off and look for a break in the gasket, if you see that you know its the intake manifold. If you cant see any signs of leakage its probally a head problem. Another word of advice, there is an updated gasket from fellpro that lasts longer that the OEM gasket.

Oct 11, 2008 | 1997 Chevrolet Blazer

Not finding what you are looking for?
1999 GMC Sierra Logo

Related Topics:

96 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

75842 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...