My GMC Overland Rig

[Gravel Travel Canada]

Service 4wd light came on while out exploring today. Truck is stuck in 4 high. Long drive back home. I think it's the dash switch as I unplugged every other connector to the diff, etc. Dropping it off at the stealer ship tomorrow .....bummer. Second time it has done, last time was after wheeling in deep snow (very deep)...a wash fixed that one or it was a coincidence. Fingers crossed for a cheap fix

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[Daniel Etter]

Service 4wd light came on while out exploring today. Truck is stuck in 4 high. Long drive back home. I think it's the dash switch as I unplugged every other connector to the diff, etc. Dropping it off at the stealer ship tomorrow .....bummer. Second time it has done, last time was after wheeling in deep snow (very deep)...a wash fixed that one or it was a coincidence. Fingers crossed for a cheap fix

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I had a similar problem with my H3. The transfer case shift fork was made from plastic and would break/melt and prevent the vehicle from going into 4lo or standard drive. See if yours is made similar because of the company. In order for it to disengage from 4hi, I had to reverse in circles for 30+feet. That is only a temporary fix to be able to get it to the shop though.

 

[Gravel Travel Canada]

I believe (hope) it's electrical due to the lights on the selector knob being out. Dealership is only a few miles away so I'll drive it in tomorrow. I have tried everything I know... warranty is over :(

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[Daniel Etter]

Hopefully it's inexpensive, electrical can get pricey though...

 

[Gravel Travel Canada]

One hour labor charge. Said they reprogrammed the transmission. Odd fix for the issue.

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[Gravel Travel Canada]

On the road again :)

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[Daniel Etter]

Good to hear! I looked that up yesterday and saw that they had a reprogrammer update for the transmission/transfer case.

 

[Gravel Travel Canada]

Ya the TCCM. Seems to be running smooth and no issues jumping around between 2wd, auto, 4high and 4low.

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[Canyon_Cliff]

Didn't you reprogram the transmission with the Trifecta calibration?
Did they over wright the Trifecta program?

 

[Gravel Travel Canada]

I did and it didn't seem to entirely over write it as I still have eco mode. Not sure how that worked out but I will say I am quite pleased with the result.

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[Canyon_Cliff]

That is good, because, I just received my Trifecta cable and download today, and will be installing it tomorrow. I need to borrow a laptop from my friend Dennis. He is the guy that helped me install the BDS lift. And I hope that I will be as happy as you seem to be.

 

[Gravel Travel Canada]

Look forward to your feedback, for me it was the best money I have spent on the truck.

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[Canyon_Cliff]

I just thought of something (rare occasion).
The shift from 4 High to 4 Low is all done by the transfer case, not the automatic transmission.
So did they reprogram the Transfer Case and not the Tranny?

 

[Gravel Travel Canada]

I asked that very question, the tech said the tranny was spitting weird codes and the transfer case was being affected as a result. I called bs but swears the electronics share certain systems.

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[Gravel Travel Canada]

I will note the two times this has happened I have turned the truck off while in 4high. Maybe a coincidence but I think I'll shift to 2wd or auto prior to turning off the truck from here on :)

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[Canyon_Cliff]

Look forward to your feedback, for me it was the best money I have spent on the truck.

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Reprogrammed with the Trifecta. So far I am very happy with it.
The truck has woken up.

How do you know you have it in ECO Mode, other than knowing the Cruise is on?

 

[Gravel Travel Canada]

The Gas pedal barely works, rpm drops, etc

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[Gravel Travel Canada]

Cruise doesn't work in sport mode, only in echo mode...

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[Sonny Marton]

Wish your fabricator was local. I have been wanting an aluminum front bumper to match up to my Fiberwerx fenders but no one around here seems that talented.

Build is great, one of my favorites. Glad to see it get put to use.

 

[Gravel Travel Canada]

http://www.outhereadventure.com/travel_page/west-of-the-rock


Wrote an article for an online magazine