low coolant light

[colbystephens]

why does my low coolant light come on?

just kidding. kind of.

my low coolant light turns on and off on quite frequently each time i drive my truck, but my coolant is full. on my 6.2, where is the level sensor? what should i be looking for to fix it?

 

[BranndonC]

It comes on because an electrical current is sent to the bulb behind the dash.

 

[colbystephens]

oh.




























moderators these days . . . sheesh. seems they'll just let anyone be one.




j/k.




pad.

 

[mountainexplorer]

Did I sell you a defective gauge unit?

 

[colbystephens]

well, i ended up just swapping in the guages from the cluster you sold me into the original, umm, i don't know how to refer to it - i swapped the guages into the white guage pod b/c the circuits on the back of the one you sold me was too messed up. it's cool tho - i still saved money buying from you b/c it would have cost me a pretty penny to replace the guages i had broken, plus you got me a tach which i'll find a way to hook up.

any ideas, anyone???

 

[colbystephens]

by the way, alan, it does this even when it's not attatched to the guage set - just dangling from the wire.

 

[Muddytazz]

Ah, the joys of electrical gremlins

 

[jarheadk5]

on my 6.2, where is the level sensor? what should i be looking for to fix it?

I think the coolant level sensor is the single-wire gadget on the right-side radiator tank, below the heater hose fitting. Last time I ran mine, I had enough coolant in the radiator to cover that sensor, but I still got the light intermittently. Probably a grounding issue...

 

[colbystephens]

i bet you're right. i thought that was the sensor. i'll have to take a look.

 

[rich]

I swapped radiators and don't have a place for that sensor anymore (and I don't need it, so don't care). But the low coolant light stays on all the time. Is there an easy way to trick it, other than sticking the sensor in some coolant? I tried grounding the sensor and grounding the sensor wire, and got no change, light still on.

 

[1985_K5_Silverado]

I swapped radiators and don't have a place for that sensor anymore (and I don't need it, so don't care). But the low coolant light stays on all the time. Is there an easy way to trick it, other than sticking the sensor in some coolant? I tried grounding the sensor and grounding the sensor wire, and got no change, light still on.

Maybe you could ground it through a resistor, or just use a resistor and skip the sensor? No idea what value to try, but maybe somebody can tell you, or else they could tell me I'm wrong.

 

[steve_kibbe]

Oldest trick in the book.......Remove the bulb

 

[colbystephens]

tried that too.

 

[jarheadk5]

Oldest trick in the book.......Remove the bulb

X2...

 

[1985_K5_Silverado]

I'll look in the shop manual and see if I can get any clues about that resistance value.

EDIT: I didn't see anything in there, but I just took a quick look through the book.

 

[Pookster]

remove the bulb.

Other than that, I have the same light- issue is, I dont know where the previous PO put the wire, or how the wire is run- I have the sensor, but I don t know how to hook it up.