thinking about going back to a thermal actuator

[great white]

I've had 3 electric actuator go out in my 94, I want the posi lock. All 3 of mine came from the dealership I use to work at.

Yeesh, that's one real bad run of luck....

 

[oohunter04oo]

Yeesh, that's one real bad run of luck....

yeh idk if its because its always in mud a water?

 

[great white]

yeh idk if its because its always in mud a water?

Could possibly be a bad production run.

Or it could be that replacement parts never seem to last as long as originals. Ie: cheap third tier suppliers...

 

[TUCSONDUDE]

Standby for link.

Searching,,,,,,,

Edit:

http://www.getdieselpower.com/cars/actuator_upgrade/GM_TRUCK_4X4_ACTUATOR_UPGRADE.html

hmmm....plot thickens, called up dealer, gave vin number, and apparently my truck is not set up for the mod

so is the compatibility issue mechanical or electronic? anybody have a schematic?

 

[great white]

As far as i know, the actuator is a retrofit right back to 88.

You need to do a little splicing, but thats about it.

 

[TUCSONDUDE]

http://www.getdieselpower.com/cars/actuator_upgrade/GM_TRUCK_4X4_ACTUATOR_UPGRADE.html link from member
http://blazerforum.com/forum/steering-suspension-drivetrain-36/4x4-help-needed-66397/ schematic
http://blazerforum.com/forum/full-size-k5-tech-42/front-axle-help-24064/ pictures
http://blazerforum.com/forum/full-size-k5-tech-42/4x4-not-engaging-25866/ servo innards

DORMAN
600-600 harness/spacer
600-101 actuator
GM
26060073 Actuator
88959465 Harness/Spacer Kit

theres a bunch of links for the upgrade for posterity, and aftermarket upgrade PN.


Anybody know where the spacer goes? I am guessing it goes in the diff before the actuator. I dont want to be like this guy...http://www.youtube.com/watch?feature=player_embedded&v=ZrZOoYRFpRI

 

[TUCSONDUDE]

OG post for why i went down this path, the 'upgrade' works even though dealer said it wouldnt..
http://www.gmt400.com/forum/showthread.php?14140-Posi-Lok-Yes-or-No&p=376221#post376221

Spacer goes in to axle before the actuator. it makes the motor actuator as long as the original thermal.
Drilled a hole in the smaller carpet cutout above the tranny, and put in a 5/16 rubber grommet-could have gone down a size.
I will upload a pic of where i spliced, once i figure out the photo manager.

 

[heavychevy98]

Do all 98's have the servo?

 

[TUCSONDUDE]

Do all 98's have the servo?

I believe so, but to be sure you have it you can look at the passenger side of your axle to see if you have
-The thermal http://www.amazon.com/Dorman-600-100-4-WD-Actuator/dp/B000CISZ4I
-the servo http://www.amazon.com/Dorman-600-101-4WD-Actuator/dp/B000IZ490Y
really hard to miss it takes a wrench somewhere in the ball park of 2"

 

[dfarr67]

I've been running the PosiLok for some years, three things- the placement in cab of the button and cable interferes with larger boots, and in winter here (Yellowknife) everything freezes including the rubber button cover which is a pain- cable doesn't give a good feel for engagement, also the clamp doesn't work well and had to install some real clamps to hold the cable. I like the 2 wheel low option but I'm moving to electric on my 89.