Jump to content

Low Coolant light

kenny jacobs

Recommended Posts

kenny jacobs Enthusiast

kenny jacobs

Posted
Posted

I have a 99 z-71 and the low coolant light will not go off. I have topped off the coolant till the overflow tank spilled over and it is still on. Where do Igo from here? Thanks

Stocklook Enthusiast

Stocklook

Posted
Posted

Unplug the sensor on the bottom of the overflow/fill tank and clean out the plug and the connector on the bottom of the tank, spray it with a electro cleaner if you have it, let dry and plug back in.

 

hope this helps. if this don't work you might need a new sensor

Shaners Senior Enthusiast

Shaners

Posted
Posted

Mine has come on 3 times in the 3 1/2 years I've owned the truck. I figured it's a bad sensor, and everything has been OK when I've shutdown and restarted the truck.

sjspor Enthusiast

sjspor

Posted
Posted

I don't know if the sensor is a float or not, but if the coolant went low, it may be hung up and not floating back up, when this happens on my Beretta, I just gave the tank a whack after adding my quart or two of coolant.

potz1999 Enthusiast

potz1999

Posted
Posted

This has happened a couple times on my 99 too. I have chosen to ignore the problem and it hasn't happened again in several months. Hopefully it won't happen again or I will try Shocklook's approach.

badpewterz Enthusiast

badpewterz

Posted
Posted

its kinda common its not a true float type just senses if its sumerged or not and they do act up at times. live with it or replace it . im not sure on the 99's but i know the newer ones gm had the brillant idea of making it molded into the tank and not serviceable :cheers: you have to replace the whole tank

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.6k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    343,007
    Total Members
    8,960
    Most Online
    Brendan C
    Newest Member
    Brendan C
    Joined

  • Who's Online   2 Members, 0 Anonymous, 1,242 Guests (See full list)

  • Latest Articles

  • Posts

    • Z45
      2026 6.6 L5P oil cooler leaking oil at 4,000 miles

      By Z45 · Posted

      The oil filter has NOTHING To do with oil leak. GM sources parts from 1,000's of vendors and as with anything mass produced, flaws are unavoidable.    Putting a larger oil filter will do nothing but satisfy emotions. The OEM filter is designed for the engine and perfectly capable of handling the demands on the engine. Oversize oil filter could result in reduced flow and overall lower oil pressure.
    • Grumpy Bear
      Joke Thread

      By Grumpy Bear · Posted

    • Grumpy Bear
      The Peckish Synapse

      By Grumpy Bear · Posted

      You're better read than that Atlas. 😏   British science fiction writer Arthur C. Clarke formulated three adages that are known as Clarke's three laws, of which the third law – that "any sufficiently advanced technology is indistinguishable from magic" – is the best known and most widely cited.   Stribeck and the pivotable Hersey Number isn't voodoo nor snake oil. That part is physics. It's what marketing and bean counters do with it that is snake oil and voodoo.    Stribeck is the relationship between Hersey and the Coefficient of Friction. Within the Hersey Equation if viscosity and viscosity is 'Dependent' on.......heat.......and.......viscosity index or the temperature to viscosity slope.    Specifically Hersey is the viscosity AT THE TEMPERATURE IN THAT LOCATION FOR THAT SLOPE.   Hydrodynamic lubrication exist when the film thickness in the location is 3X the Ra roughness of the surface. This is irrespective of the hardness of the substrate. To obtain that thickness X viscosity is required for Y velocity at Z load. That's a lot of moving parts. It is also impossible to maintain in an ICE but nearly possible with a turbine under constant load.    What does that mean? Error heavy and operate light. Wear is inevitable but the rate of wear and the milage obtainable are a function of prevailing conditions and HABITS. The only penalty is viscous drag and at fractions so low as to be well worth the effort. Double the life, half the manufacturing carbon foot print. Greed is the only impediment.    The materials generated by SwRI are the RESULT not an estimation or a hypothesis.    Don't delude yourself sir, EV's have as many pitfalls as ICE's. We just don't know what they are yet and it will take longer to sort as MARKETING and GREEDY CEO's have had more time to polish the turd they are selling. 
    • Grumpy Bear
      The Peckish Synapse

      By Grumpy Bear · Posted

      You can always count on greed to prey on ignorance and stupidity.    Friend bought a 2019 Ford Flex and asked me about using Valvoline R&P 5W30 in it. Told him give the miles on it and the fact it wasn't yet using oil that it was a good plan. He uses a Valvoline quick change shop for his oil service.   First they tell him that isn't the oil the OEM recommends. He told them he didn't care what the OEM thought. Then they floated the, "But it will void your warranty"    His reply was it's a 2019, there is no warranty and informed them their knowledge of the law was lacking.    Then they tell him 'But it will ruin your motor"!.    Mine to ruin he says. Finally they give in and charge him 150% the semi-syn price    Point it the brainwash is so embedded that even the service industry is drunk on their swill. The public is right behind them. Echoing the same lies on every forum and media platform. If the end goal is indeed EV then I'd say that ship is about built. 
    • CamGTP
      Gas Prices

      By CamGTP · Posted

      Diesel hit $6.00 here today at the truck stop.   Payed $2.79 for E85 today too.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...