4wd actuator bypass and tranny damage


Asked by Feb 15, 2017 at 10:43 PM about the 1994 GMC Sierra 1500 C1500 SL Extended Cab LB

Question type: Maintenance & Repair

We have been having problems with the actuator on my
husbands 94 GMC Sierra. Our mechanic has worked on it
a couple of times and yesterday put a bypass in. I picked
up the truck and this morning when my husband got in it
to drive the transmission started slipping and he had
trouble driving it.

The mechanic said it had nothing to do with the bypass
installation but it seems awfully coincidental. This tranny
was rebuilt 150 miles ago and regularly serviced. We had
no indication prior to that anything was wrong.

Can someone tell me if this bypass could have had
anything to do with it?

3 Answers


What do you mean by Bypass? Is it a manual that requires you to pull a lever?


It eliminates using the actuator for the 4WD.

1 of 1 people found this helpful.

I looked at the receipt and it is called a full time actuator.

Your Answer

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