Overheat

[inafogg]

do you have axcess to a pressure tester?
try pulling a coolant hose off(easiest 1)to see what it looks like
can you see anything in the radiator or just on the cap
that maybe dexcool that your seeing on cap?hard to tell from here
let us know

[bsr2002]

Originally Posted by inafogg

do you have axcess to a pressure tester?
try pulling a coolant hose off(easiest 1)to see what it looks like
can you see anything in the radiator or just on the cap
that maybe dexcool that your seeing on cap?hard to tell from here
let us know

i'M THINKING YOU MAY BE RIGHT! I was reading up on another thread moments ago that the sludge is dexcool from air getting into the anti-freeze?

[Schurkey]

Originally Posted by bsr2002

Yes radiator level is good

Not according to the photo you posted. Did you drain coolant out of the radiator before taking the photo?

Originally Posted by bsr2002

Checked the oil and trans fluid and both levels are good. And no discoloration. However when I take the radiator cap off I have what looks like sludge. I guess intake or best case senario clogged radiator???

Originally Posted by bsr2002

i'M THINKING YOU MAY BE RIGHT! I was reading up on another thread moments ago that the sludge is dexcool from air getting into the anti-freeze?

Coolant looks green. Not Dexcool.

When was the last time the cooling system was flushed and the coolant replaced with fresh stuff?

First Guess: Plain ol' ordinary neglect. Use infra-red temperature "gun" to verify no cold spots on radiator when engine is running, fully warmed up, and the fans are NOT running. Flush coolant THOROUGHLY, open radiator and block drains to remove flush water. Inspect radiator for clogging/corrosion. Inspect hoses for deterioration. Clean crap out of overflow bottle. Install the coolant brand/type of your choice, in aproximately 50/50 mix with water. Replace rad cap--I like the lever-lock style for safety. See if the ugly stuff in the radiator comes back.

[bsr2002]

Originally Posted by Schurkey

Not according to the photo you posted. Did you drain coolant out of the radiator before taking the photo?




Coolant looks green. Not Dexcool.

When was the last time the cooling system was flushed and the coolant replaced with fresh stuff?

First Guess: Plain ol' ordinary neglect. Use infra-red temperature "gun" to verify no cold spots on radiator when engine is running, fully warmed up, and the fans are NOT running. Flush coolant THOROUGHLY, open radiator and block drains to remove flush water. Inspect radiator for clogging/corrosion. Inspect hoses for deterioration. Clean crap out of overflow bottle. Install the coolant brand/type of your choice, in aproximately 50/50 mix with water. Replace rad cap--I like the lever-lock style for safety. See if the ugly stuff in the radiator comes back.

It is not dexcool, but on lable says it will work for any color coolant universal. I was using it to top it off. I have had the car a little over a year and have not given it a flush.

I will flush it out tomorrow and see what happens

[bsr2002]

I'm flushing my system, after 5 min looks like it's gonna overheat then fans kick in and needle starts going down. I look u8nder the hood and notice no water is going into my top hose. Hose looks like air being squeezed out... I turn off the car and hose goes back to normal.

I'm assuming my thermostat isn't opening up?

[bsr2002]

Originally Posted by bsr2002

I'm flushing my system, after 5 min looks like it's gonna overheat then fans kick in and needle starts going down. I look u8nder the hood and notice no water is going into my top hose. Hose looks like air being squeezed out... I turn off the car and hose goes back to normal.

I'm assuming my thermostat isn't opening up?

Ooooopppss!!! Sorry bout that! I didn't have the Rad plug in tight enough and the water was dripping into the pan... I just need to slow down.

[inafogg]

Originally Posted by bsr2002

It is not dexcool, but on lable says it will work for any color coolant universal. I was using it to top it off. I have had the car a little over a year and have not given it a flush.

I will flush it out tomorrow and see what happens

if you were adding/mixing regular antifreeze to a factory dexcool system it will sludge up the entire cooling system!!!
the entire system including overflow must be drained & flushed good, probably a few times
until everything is cleaned.best to remove the thermostat while flushing
replace all hoses if possible along with cap & thermostat

Good luck mike

[bsr2002]

Originally Posted by inafogg

if you were adding/mixing regular antifreeze to a factory dexcool system it will sludge up the entire cooling system!!!
the entire system including overflow must be drained & flushed good, probably a few times
until everything is cleaned.best to remove the thermostat while flushing
replace all hoses if possible along with cap & thermostat

Good luck mike

I'm on my fourth flush and found another bottle of Super Flush and fixin to pour it in. I don't have any transportation to the parts store so I can't get the cap and thermostat...

[bsr2002]

This is the stuff I been using to top off my coolant...

[GMCustomerService]

Originally Posted by bsr2002

Why do you need the VIN#? Seems everyone of ur posts requires one.

Seems to me all u would need is year and engine and symptom

Schurkey is correct in that I am able to use the VIN to run a check for recalls and bulletins that may apply to your sitaution. It allows me to specifically look at those that would apply to your vehicle.

Tricia, GM Customer Service.