Question about 1999 GMC Sonoma

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Overheated no money so put in wrong type of radiator fluid(it ran out) then couldnt drain bad kind so mixed it with the right kind. Now wont start properly an temp gage gets to max then 0 max then 0. Also pour it directly in radiator

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It does not matter witch kind of coolant you used,this will not effect the temp.You most likely have a thermostat stuck,or,not enough coolant in the system.If this was at all helpful,please rate,thank you.

Posted on Jul 17, 2010


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2003 Toyota Camry overheated. Coolant/water full in both radiator & overflow. This is the first time this has happened. What could have caused this.

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Radiator removal instructions

Remove the fan and shroud. Put a large (!) drain pan under the radiator and drain it - if you're lucky it'll have a drain petcock near the lower radiator hose. Unscrew the radiator hose clamps and disconnect the upper & lower radiator hoses. Disconnect the transmission cooler lines if they also go into the radiator (some do, some don't)... you'll want a second, small, drain pan to catch the transmission fluid.

Now unbolt the clamps that hold the radiator to the radiator support plate (across the front of the car). Lift the radiator straight up, being sure not to lose the rubber mount isolator pads. Remove it from the car.

Replacement is pretty much the reverse of disassembly - put the new radiator in place CAREFULLY so you don't damage it, put the mounting clamps back on, reconnect the transmission cooler lines and radiator hoses, check the petcock (if the new radiator has one) to be sure it's closed snugly, reattach the fan and shroud.

Now refill the cooling sytem with all NEW antifreeze/coolant and water mix, about 50/50. DO NOT reuse the old antifreeze. Take close note of exactly what brand and type of antifreeze you used, and never NEVER mix any other brand/type of antifreeze with it, only exactly the same brand/type.

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what year, and do you service car.?
are you mixing AF fluid types. i bet yes. and is big time bad.
put oil there?
you can do the exhaust gas heck device a radiator cap filler
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id do a full flush and fill and drive a week.
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It does not have any fluid to work with. You also burned out many of the internal transmission components if you drove it until it was dry. If the fluid just poured out onto the driveway, then keep the vehicle off. Remove the radiator and fix or replace it. Refill the trans with proper type of fluid.

If the trans and radiator fluids mixed, which can happen if the radiator tanks leak between chambers, then your trans is corroded inside. The radiator can be tested if you can not tell by looking at the Antifreeze. The bottom radiator tank is suppose to be separate and as long as it leaked on the ground, the 2 fluids did not mix.

Your biggest problem now is to determine whether the trans is any good without spending money to fix the radiator. If you take out the Radiator, some places will test it free. Ask them about whether the 2 fluids mixed.
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Your trans fluid oils all the bearings and bushings and pumps inside the trans. If the engine is not turning, the trans will not burn out its parts. If the engine is idling, the trans will burn out without fluid.

I attempt to give the cheapest Solution to your problems. You can only test the Radiator separately by removing the radiator or having the vehicle towed in. There is no way of knowing if the trans was damaged until fluid is restored to the trans. If the 2 fluids mixed, it is a bad thing. If the 2 fluids were not mixed, then it is better for the trans, but bad things happened to the trans without having fluid in it. Sorry I can not give you better news.

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"i dont have that kind on money and the kids have games tomm", what does this have to do with your question? anyway just pull the lower radaitor hose off, that is the quickest way to get most of the coolant out of the engine and the radiator, then refill with water and repeat this drain out, after 2nd drainning refill with 50/50 mix extende life coolant, U will need 2 gallons, about $20 at Kragen or Autozone, Autozone maybe less, think it is on sale, about $15.

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