Question about 2004 Chevrolet TrailBlazer

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What causes my 2004 chevy trailblazer to overheat? I got the radiator replaced, due to a crack across the top from overheating?..I got the water pump and thermostat replaced too..Also the motor stalls

Engine check light has been since all these problems started.

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Well kinda sounds like it has overheated quite a few times, so unfortuanetly it's heads are probably warped and head gskts are blown causing compression from cylinders to enter cooling system which causes high pressure in cooling system which in turn blows coolant out and end result...your enj. probably needs replacing ! Sorry for the Bad news

Posted on Feb 13, 2012

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Posted on Jan 02, 2017

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SOURCE: 99 Chevy Silverado is overheating after maintance on radiator

check radiator, could b blocked, check hoses, mayb they soft, while vehicle running c if hoses r compressing, if they r would b iether radiator or hoses

Posted on Mar 12, 2009

  • 34 Answers

SOURCE: 1993 chevy camero- thick, rusty colored residue in radiator

The rust is probably in the engine. There are many little pockets, water ways, water jackets (around the cylinders), etc, so getting all the rust out without dunking the block and heads in a cleaning tank is about imposible. I would recommend giving it really good flush every 4 to 6 months. I would try flushing the radiator before replacing it because it is probably not rusted, even though it is full of gunk.

Posted on May 18, 2009

  • 75 Answers

SOURCE: My 99 Cavalier keeps steaming and overheating. I

90's Cavaliers are notorious for problems such as these.

I hate to be the barrier of bad news, but in this case I would suggest that your engine either has a blown head gasket, and/or a warped head.

There is also the possibility that you blew a "soft plug" or cracked the block and that the coolant is leaking out through the base of the engine.

To find out of you have a blown head gasket, you can remove the oil cap from the valve cover and inspect it. If it has a yellow-brown-ish goo that is the consistency of paint, then you definitely have a blown head gasket and coolant has mixed with your oil. Meaning that you likely need an overhall.

You can also check by removing your radiator cap and checking to see if little tiny bubbles come up while the car is running. That is a sign of a compression leak, meaning that you most likely have a crack somewhere in either the cylinder head or the block.

Also, those cars have many very small radiator hoses that are in the middle of the engine and hard to see, find or replace.

In this instance, it sounds like your car has over heated more than 4 times, and once you get to that point you are likely to have fried the engine. This is because the newer engines are mostly aluminum and can't stand that much heat that often.

I would suggest seeking either a new car, or seeking a used engine to replace in your car. A used engine for those is fairly cheap compared to the price of fixing the problems that are likely to have occurred from excessive over heating.

Posted on Nov 11, 2009

  • 246 Answers

SOURCE: when i turn on my heat my 2004 trailblazer stalls

if this happens while the defrost of ac is turned on, it could be a seized ac compressor which will cause the serpentine belt to squeal and drag making the engine sometimes stall. if it happens with the ac off and the selector on say the floor, or dash vents, the issue could be a bad alternator and battery. this is confirmed when the blower motor engages and the lights dim and then the truck goes dead.

Posted on Feb 17, 2010

  • 1311 Answers

SOURCE: My trailblazer keeps overheating and I'm not sure

There may be an obstruction in one of the hoses, there may be an air pocket in the system somewhere.
Are you sure there is actually an overheating going on? Maybe it's a bad temperature sensor or temperature gauge stepper motor.

Posted on Oct 12, 2010

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