GM Drivetrain & Suspension Chassis | Transmission| Driveshaft | Gears/Rear End/Differential | Traction Aids

4wd diff to awd diff question

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Old Feb 18, 2026 | 06:42 PM
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Default 4wd diff to awd diff question

Question for yall. Have a truck with the electronic selectable transfer case(auto, 4hi, 4low). If i was to pull the front axle out to put one of the awd style in place of it; would there be any issues? Other than tricking the 4wd system to think the actuator is still working as intended. Thanks in advance.

Ben
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Old Feb 19, 2026 | 01:22 PM
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It would show the "service 4wd system" i think.
But you can just install a spacer in your 4wd Front diff and then you have a "AWD" front diff.
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Old Feb 19, 2026 | 05:03 PM
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From: JunkYard
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What year truck?

On the early trucks I have heard of people leaving the actuator plugged in for the front diff.

What do you plan to do for the transfer case then?
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Old Feb 19, 2026 | 05:24 PM
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It's an 18.

As for the tcase; I'm gonna keep it in there as is use it like normal. One of the bearings is starting to sing again. Figure if i pull it out; put something better in it.
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Old Feb 19, 2026 | 05:30 PM
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From: JunkYard
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I don't know how an 18 will react.
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Old Feb 19, 2026 | 07:58 PM
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Wish i could put the awd tcase on there and make it full time awd.
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