ryan1428

When the car warms up to operating temp the coolant light comes on and stays on until I shut it down. Plenty of fluid in the radiator and lots in the reservoir. Car does not overheat. What could be the problem? Thanks

Ryan
98 Z28

stangslayer98

probably the sensor

nemss1

where is the low coolant sensor located on a 2000???

DeepV

iTrader: (1)

just unplug it, it's located on the passenger side of the radiator.

stangslayer98

if its anything like the 98-99 its a small black box next to the battery under the radiator fill cap

nemss1

i was just wanting to know this because my service manual shows no low coolant light and when i turn the key to run, no coolant light comes on for a sec

pjb

iTrader: (2)

do a search and check for power steering cooler leak. PS fluid in the radiator will cause the sensor to give a false coolant low light.

ryan1428

I took off the radiator cap. Did not look like there is any oil in it. Should I see an oily mess?

2001NBMZ28

They were problematic, GM took them off at one point - maybe in 2000. I know the 01/02 cars don't have one.

stangslayer98

My original sensor worked fine for 10 years , probably would have lasted longer had I not taken the radiator off installing a cam

nemss1

thanx for this info. that clears it up for me. see i figured mine didnt have a low coolant light because it never comes on for a sec when key is on run. also not showing in my service manual

ryan1428

I looked up the coolant sensor. I see it's a small black box. Is there another piece inside the radiator? Can that sensor be cleaned.....like with electrical parts cleaner?

pjb

iTrader: (2)

pull the wire connector then remove the little clip and it pulls right out. it has an o-ring seal. I have washed and cleaned mine after being contaminated with PS fluid and it worked .

ryan1428

Thanks, will try that. What did u use for cleaner?

bboyferal

iTrader: (9)

IMO, If I went through the trouble of taking a 10 year old low coolant sensor, I would not clean it. I'd replace it with a new one from autozone for a couple of bucks or just unplug it.


I did the one on my 99 just recently, and my 2002 did not come with one.

wssix99

iTrader: (5)

I had the same symptoms and it was a bad coolant level sensor. If you are going to go to the trouble to partially drain the radiator to get the thing out, you'll probably want to have a spare sensor ready to go if you find your old one is clean! (At 10 years, you're due for a new one. My 99 lasted me just over 9 years and 80K.)

ryan1428

Called the dealer. It cost $68. Am I looking at the wrong part?

lovin myls1

iTrader: (4)

http://www.rockauto.com/catalog/raframecatalog.php

Here ya go-you will find a pix and all- rock auto 45.00

wssix99

iTrader: (5)

Right part - wrong dealer! gmpartsdirect has it for $35.