Since I've added coolant the level has not moved from what I have inspected. I cannot currently smell coolant but I have in the past. Last time I got a flush is when I had the radiator replaced at about 89k now has 110k. In the past the temp gauge always sat near or just below the half way marker, now it sits a bit past a quarter to the about half when moving, and when she idles for a bit the temp gauge will climb to about 3/4.

 

First off, the t-stat needs replaced... GL


ACDelco OE Service 15 11073 Thermostat Housing Water Outlet | eBay

 

Thanks for being so helpful, if you find yourself in Milwaukee message me and I'll buy the rounds for the night.

 

So.. Is a thermostat something I should take a swing at or just let my mechanic do it..?

 

Resister has nothing to do with heat. The blower moter resister acts as a dimer switch for your fan. If coolant doesnt help try a premium thermostat. It will open at a lower temp heating your truck faster, and in return heating your cab faster. Also make sure you have the re-circulate function on. Makes all the difference.

 

Not that difficult after you remove the drivers side wheel and inner fender. 2 bolts and a hose clamp, make sure you clean the engine mount surface before installing new 1 and replace band clamp with worm gear clamp.

Here's a yt video showing replacement on a colorado.

 

The overflow tank was bone dry, yikes!!

you may be very low.get some in b4 you drive.

then check it every hour to see if its dropping.

 

Thanks Guys. I just Ordered a brand new thermostat, Do I need to drain the radiator before I change it? or let it gush out and top it off?

 

Either way, I would replace the coolant. You could also drain it and if still in good condition, save it and use it for top off down the road. In the meantime add new coolant. GL

 

Yeah, I topped it off a while ago and have been keeping a close eye on it.