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Old 09-18-2020, 04:33 PM   #7
dakota1820
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Join Date: Feb 2014
Location: st clair mo
Posts: 2
Re: Considering a k1500 gmt 400

Quote:
Originally Posted by 1976gmc20 View Post
Oh, I forgot to mention those thermal actuators for the central axle disconnect on the 4wd.

They don't work very well when they work, and then they quit working at all.

Since mine is just a "ranch truck" I just shimmed the end of the actuator to lock the two front half axles together semi-permanently. The ring gear and front driveshaft now turn all the time even in 2wd, just like if you had the front hubs locked in on a solid axle.

They also make a manual cable control kit. The last I checked they were about $160 and claimed an hour or two labor. I figured that was money I didn't need to spend but an advantage is that you would have a 2wd low range option. If I had a nice GMT400 then I would get the cable control.
Good info to have. What is the point of the thermal actuator? Other trucks don't have that , that I know of.
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