How long has my Silverado Z71 been losing coolant?
From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. HELP! I have a 1999 Silverado Z71 with a 5.3 that has slowly been losing coolant for about two years. I have had to add about one pint dexcool between regular oil changes.
What happens if you lose antifreeze with no apparent leak?
Losing Antifreeze With No Apparent Leak. Whenever a vehicle loses antifreeze, also known as coolant, the usual expectation leads the owner to check for evidence of leaks at all the coolant connections and components. Obvious coolant leaks can usually be found in the form of puddles left on the pavement.
Can a 5.3L Vortec leak hot coolant?
You may never see a small leak when the engine and coolant is hot because it evaporates immediately after it leaks. The 5.3L Vortec has a dry intake manifold therefore the leak cannot be there. I finally sent an oil sample to Blackstone Labs ( http://www.blackstone-labs.com ) and they confirmed that I had coolant in my oil.
Why do I keep losing coolant on my truck?
The truck has been losing small amounts of coolant over stretches of 400 to 600 miles. Come to find out long after the warranty was expeired of couse, there is a particular problem with one of the casting companies who made heads for this engine, castech is their name.
What happens when coolant goes out in a GM Truck?
Still trying to find the answer but have recently found an article illustrating the problem. If your General Motors SUV or truck is losing coolant, with no visible signs of a leak, the source may shock you Worse, allowing the problem to go on often results in a new engine.
Can a car lose antifreeze without a leak?
Monitoring its level and condition is a part of the regular maintenance of the vehicle. Generally, there should be a leak somewhat if the vehicle is losing a high amount of antifreeze. However, a car could be losing coolant but no leak. What should you do when coolant disappearing from reservoir without leaving any trace?
What does it mean when antifreeze goes out of an engine?
It could be a blown head gasket, a fractured cylinder head, damaged cylinder bores, or a manifold leak. It could also be a hydraulic lock. If the antifreeze vanishes without any apparent reason, check these components for cracks, damage, or defects. Any of these issues can destroy the engine if it is going for too long.
You may never see a small leak when the engine and coolant is hot because it evaporates immediately after it leaks. The 5.3L Vortec has a dry intake manifold therefore the leak cannot be there. I finally sent an oil sample to Blackstone Labs ( http://www.blackstone-labs.com ) and they confirmed that I had coolant in my oil.
Why is the coolant leaking from my Chevy Silverado?
On July 21 my 2004 Chevrolet silverado overheated and had a sudden loss of power. The problem was a direct result of a cracked head that leaked all of the engine coolant into the oil pan. This defect is a known defect to gm per a technical service bulliten that was issued in 2007.
Why does my Chevy Silverado 1500 keep over heating?
2004 Chevrolet Silverado LS 1500 5.3L V8. My truck keeps over heating. I don’t changed brand new thermostat, water pump and also heater hose; but my truck keeps over heating. I was thinking of draining the oil and flushing radiator and adding Blue Devils head gasket sealant just to be sure and see if it’s a blown head gasket.
When did the GMC Sierra have the most problems?
The model years with the most problems reported were 2004 and 2007, with more than 60 complaints each year, followed by 2002, 2003, 2005, and 2010, with more than 40 each year. Of the 112 problems, five different complaints have been reported 90 or more times.
How big is the coolant on a silveradosierra 5.3?
It has a 16.9qt capacity but you’ll never get it all out, not easily anyway. I will never do my own coolant flush on my 5.3 again. What a hassle. Next time i will pay a shop the something $75 whatever to do it.
When to do coolant flush on Silverado 5.3?
I followed the: 2009 Silverado 100k Coolant Flush thread as well for my flush. OilFracker wrote: I will never do my own coolant flush on my 5.3 again. What a hassle. Next time i will pay a shop the something $75 whatever to do it.
How much coolant does a truck 5.3 hold?
2011 5.3 4 wheel drive. Truck got a little warm towing trailer yesterday. Think I am going to do a coolant flush. How much coolant does it hold? Thanks It has a 16.9qt capacity but you’ll never get it all out, not easily anyway. I will never do my own coolant flush on my 5.3 again.