Where is trailblazer thermostat

Mine is there on top as well. Never touched it, it was there from the factory. You guys are nuts! The only way the thermostat is on top Upper radiator hose is if this is a V6 in the old body style Blazer some where also called Trailblazer. Well I'm not nuts, and i have a 04 trailblazer, Ive been working on cars for a long time and i pulled a thermostat off my inline 6 4. If there was a thermostat in there, you now have two thermostats on the vehicle.

Take a look at the radiator hose on the driver's side of the vehicle. I've been a technician at a Chevy dealer for 15 years, and unless you're severely confused as to what type of vehicle we're talking about here, there is NO thermostat in the passenger side outlet housing. And if there is, it was put there by a retard! In getting ready to change my thermostat on 03 trailblazer inline six. I would have to agree that it is on the drivers side mid way down the engine from the lower hose.

Why cant gm put these where easily accessible like older engines?? Yes, indeed it is on the drivers side. Pain in the kazoo to get the bolts lined up just right as to not cross thread them. Thanks for the info. This explains why every time I ordered a T-stat I got the wrong part.

I expected it to be at the top, never even looked at the "return" hose. I guess I've been out of that end of the field too long. Time to get out of manufacturing and back to turning wrenches instead, more satisfaction that way! I have a Trailblazer and got the same code and have done everything BUT put a new thermostat in it which I am going to do tomorrow with a friend.

Can you tell me what size wrenches and tools I'll need to do it? Is the thermostat in the same location on an 04 as it is on a ? Question: Problem with my Envoy 4. If the PCM sees that coolant temp is below thermostat regulating temp, it will set an error code. This means the PCM sees coolant temp. At say degrees, while it should be at This is caused by either the thermostat or the coolant temp.

Sensor that is misreading the engine temp. Anyone have a procedure to change the thermostat Was this answer. Engine Coolant Thermostat Replacement 4. Refer to Cooling System Draining and Filling. Remove the generator. Refer to Generator Replacement. Loosen the outlet hose clamp at the thermostat housing 1. Remove the outlet hose from the thermostat housing. Remove the thermostat housing bolts. Remove the thermostat housing from the engine block. Clean all of the surfaces of the thermostat housing.

Clean the sealing surface of the engine block. Installation Procedure Install the thermostat housing to the engine block. Notice: Refer to Fastener Notice in the Preface section. Install the thermostat housing bolts.

Tighten Tighten the bolts to 10 N m 89 lb in. Lubricate the inner diameter of the radiator hose with engine coolant. Install the outlet hose to the thermostat housing 1. Secure the hose with the clamp.

Install the generator. Peace out and Merry Christmas! This sounds like the the radiator may have had an air pocket and needs the coolant topped off. Also may need to replace the tiadaror cap as the system needs to be able to build pressure. Worse cause would be a blown head gasket but you would notice a loss of coolant in the tiadaror.

There is no such sensor. I am guessing that you have a check engine light with code P coolant temp below thermostat regulating temperature. This code is cause by either low coolant level, or more likely- a bad thermostat. There is no sensor called that. If what you are saying is true and that the vortec inline 6 has no coolant temp. Who said there is no temperature sensor? All I see talking about is the thermostat location, not any temp sensor? Sorry to say but my has the thermostat located on passenger side of block near power sterring pump.

Trying to figure out how to get out and find right part. On all Trailblazers and Envoys with the I6 is located on the drivers side, low and behind the alternator. Let me know how it goes and how to replace it. A picture of the thermostat when you do it would be great too! Skip to main content. Chevy Blazer On earlier model vehicles, and even the S-series Blazer that was still out when the new body style Trailblazer came out, they had a V6 engine with the thermostat located right in the front, on top of the intake, just about dead center of the engine.

How do you tell which way the thermostat goes on a 03 Chevy trailblazer. Do you need to replace the thermostT housing with the thermosts.

Limo Tavares,Florida. In a jam. The coolant temp sensor on a 4.