e-locker failure

[Wisha Haddan H3]

My e-locker failed on the trail yesterday. It worked at the bottom of the trail, but later when I engaged it the light would blink for 15 secs and then turn off. Tim and I tried every combination we could think of to reset it, but nothing worked. btw this was in 4-lo at a complete stop. And yes I was pushing the right button

There's no message in the DIC and no codes according to onstar. I'll call the dealer after the holiday, but is there anything I can try in the meantime, like disconnecting the battery cable for x minutes? Is there a fuse for the e-locker? I couldn't find one in the fuse box.

[Boar-Ral]

Originally Posted by Wisha Haddan H3

My e-locker failed on the trail yesterday. It worked at the bottom of the trail, but later when I engaged it the light would blink for 15 secs and then turn off. Tim and I tried every combination we could think of to reset it, but nothing worked. btw this was in 4-lo at a complete stop. And yes I was pushing the right button

There's no message in the DIC and no codes according to onstar. I'll call the dealer after the holiday, but is there anything I can try in the meantime, like disconnecting the battery cable for x minutes? Is there a fuse for the e-locker? I couldn't find one in the fuse box.

There is a servo that is responsible for switching modes in the transfer case.* I have heard of incidents where there will be a servo failure, but this is usually reported through the DIC.* It still might be a possibility.

[timgco]

IMO, Don't disconnect your battery. Take it into the dealer. You may have luck and reset everything and it will work a few more times. It's better to let them hook your up your truck to their Tech2 (I think that's what they use) to figure out the issue. That could have been bad if you were in teh rock garden and it failed it there... or on something like radiccal hill.

Mine will be down there next week as well.

Front end alignment and rebalance on one wheel. Other than that, I detailed the whole truck today. Even painted up the UCP and skids.

[NoMoGMPG]

It sounds like the encoder motor is seized, thats the actuator on the t/case where the wires go into. KenP could show you where it is.

[Wisha Haddan H3]

Guess I wasn't clear ... the transfer case is fine. It shifts between 4lo and 4hi locked/unlocked just like butter. It's the rear locking differential that won't engage.

[deserth3]

I'm not an expert but I'd check the wiring going into the diff. There's most likely a connector and it may have come disconnected.
If that don't work take her to the dealer.