thermostat change - Chevy Colorado & GMC Canyon
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post #1 of 11 (permalink) Old 03-02-2008, 08:34 PM Thread Starter
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thermostat change

Anyone have a how to on the t-stat change? Looking to do mine because I think my coolant is not coming to temp. I drive 30k to work every day and the heater just blows warm when I am there and should be hot right? The guage only shows at a quater for heat also.
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post #2 of 11 (permalink) Old 03-02-2008, 08:37 PM
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You sure got a long drive, ever looked into a private plane? LOL Have you checked into the chilton or haynes manual, I am sure someone will have a better how to!

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post #3 of 11 (permalink) Old 03-03-2008, 12:37 PM
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I've changed mine. It's easier than it looks. You do have to remove the drivers side tire and go through the wheel well. The gasket is built into the t-stat which makes it easy. I used a 1/4" drive ratchet and socket and a couple long extensions. I also used a universal. There is a trick to it, I had to put tape on the universal to make it stiff because you have to go in at an angle to access the top bolt. The stock one didn't have any rtv on it so I didn't use any, just took the old one off and put the new one on.

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post #4 of 11 (permalink) Old 03-03-2008, 02:50 PM
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Quote:
Originally Posted by jlong
I've changed mine. It's easier than it looks. You do have to remove the drivers side tire and go through the wheel well. The gasket is built into the t-stat which makes it easy. I used a 1/4" drive ratchet and socket and a couple long extensions. I also used a universal. There is a trick to it, I had to put tape on the universal to make it stiff because you have to go in at an angle to access the top bolt. The stock one didn't have any rtv on it so I didn't use any, just took the old one off and put the new one on.
Don't forget to drain the coolant first before all that. :D



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post #5 of 11 (permalink) Old 03-05-2008, 06:53 PM Thread Starter
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How much coolant is going to come out of it? Is there a way where I can save it and put it back in or should I just get all new stuff?
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post #6 of 11 (permalink) Old 03-06-2008, 10:39 AM
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new fresh coolant is always best as you can contaminate it draining it. Unless you are real careful about it.

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post #7 of 11 (permalink) Old 03-06-2008, 04:25 PM
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I would re-use the existing coolant. Use a clean drain pan (new if possible). You may loose a little bit in the recovery process, so top off with pre-mixed Decool after running the system for a while (letting the air burp out).

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post #8 of 11 (permalink) Old 11-17-2014, 04:16 PM
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It’s really great posts.

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post #9 of 11 (permalink) Old 01-02-2016, 10:54 AM
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I just changed mine yesterday,It was occasionally getting a code when I was on the x-way. The code said the engine wasn't getting up to full temp,so it was suggested that I change the t-stat. The temp gauge would run at about 1/4 and after changing it runs about 1/2. I went through the driver side wheel well,which was a great way of doing it,drain the coolant,remove the innermost wheel well,you will need some extensions and a universal to reach the top bolt. I only unhooked the hose at the radiator,then un did the bolts and pulled the t-stat out with the hose on it. Once it was out I changed the hose to the new one,and put it back in,make sure to line up the mark on the hose with the line on the t-stat. Then I ran the old coolant thru a cloth to filter it and reused it,it wasn't but 6 months old. Everything went smooth,and I am very happy I did it,my heater worked a little hotter. I drove it around and the temp gauge stays steady at 1/2, I haven't had the chance yet to drive it on the x-way to see if it gets a code anymore,but will later today. Reading the previous post helped me greatly,thanks.
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post #10 of 11 (permalink) Old 01-08-2016, 05:29 PM
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thermostat change

Most of the new Thermostats open at about 10 degrees warmer that the old one, so your temperature gauge will be just above the center line (normal) when warmed up. This point is the new normal. Mine was a 2006 I5, not sure if it will be the same for yours. was a little worried about it until I read about this on this site.
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