Question about 1998 GMC Safari

1 Answer

I have brown sludge in my antifreeze resevoir tank

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

Need to flush the radiator first off then check for a blown head gasket or if the runs hott it could be your water pump has seized up

Posted on Nov 01, 2012

  • tyganzer
    tyganzer Nov 01, 2012

    according to the temp gauge it is running cool and they wouldnt flush it at mr lube today so how can i make sure its the head gasket?



1 Suggested Answer

  • 2 Answers

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

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.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

My antifreeze keeps turning brown and full of sludge. Why is this happening?

most probably a failed/split transmission cooler in the radiator tank
If that is the case , the fix is a new radiator and a chemical flush of the radiator
get quotes from an accredited radiator shop after getting a proper diagnosis of the fault

Apr 07, 2016 | Cars & Trucks

1 Answer

The water comrs bown water is that good

Are you saying that the water in the radiator is brown?
If the water is brown it would indicate rust from the engine which means there is probably no antifreeze which is also a corrosion inhibitor. If the water has a lot of sludge it would indicate a blown head gasket which is not so good.

Aug 22, 2014 | Cars & Trucks

1 Answer

Antifreeze is coming out resevoir tank doesn't seem to be circulation

If you put too much antifreeze in the tank it will overflow when the engine gets warm

Jan 24, 2014 | 2002 Dodge Grand Caravan

1 Answer

I have a thick dark brown sludge in my antifreez resevoir tank is it oil or really old antifreeze?

Usually antifreeze and oil mixing causes a dark whiteish milkshake consistancy liquid so if its a dark color i'd guess its REALLY old antifreeze with a lot of corrosion from your engine. Get it flushed and changed a.s.a.p. and hope it didnt mess it up to bad.

Nov 01, 2012 | GMC Safari Cars & Trucks

1 Answer

92 pontiac transport montana missing and brown gunk in antifreeze overflow. just had heater core replaced a few days ago. possible cause? dont want to get taken by mechanics. $1200 in

Are we talking about two different problems ??
The miss could be a plug or wire or injector - even a compression problem.
The dirty coolant could be built up over several years.
And yes it could be a faulty head or intake gasket.

Aug 04, 2012 | Pontiac Montana Cars & Trucks

3 Answers

How do i tell where my water pump is and whether it is working properly or not

Where the water pump is actually located depends on what engine your vehicle is equipped with. Most water pumps will work just fine until they start leaking. You will see antifreeze leaking on the ground near the front PULLY END of the engine. In rare cases, the warter pump has internal damage from the impellers being badly corroded. This is usually accompanied by a lot of brown "sludge" in the radiator tank. If you do not have this brown sludge, (your antifreeze looks clean) then this is most likely not the problem.

Jan 29, 2011 | 1996 Buick Skylark

2 Answers

Oil in the radiator

are you sure its oil in the antifreeze? oil is brown. your van should have dexcool wich is orange, not green.(looks red sometimes)check the coolant again and check the oil. if it looks milky or foamy, there is coolant in it. sounds like it may be a blown head gasket. not good. stop driving it if you want to save your engine. you need to replace the head gasket/s, and flush the cooling system.

Jan 17, 2009 | 1997 Chevrolet Venture

2 Answers

Got 98 windstar.brown sludge in antifreeze recovery tank. please help

Sounds like the antifreeze is WAY pased the point that it needs to be changed. Should be drained, backflushed and have new installed.

Oct 05, 2008 | 1998 Ford Windstar

Not finding what you are looking for?
1998 GMC Safari Logo

Related Topics:

134 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

76691 Answers


Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

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

Answer questions

Manuals & User Guides