Rear end

stonerock · Dec 27, 2016

86 GMC 7000 2 speed rearend kickes out once in a while, high or low is this a easy fix??

mtdan · Dec 27, 2016

mtdan · Dec 27, 2016

could just be the shifter. Last I checked you had to buy the complete unit if it is the newer design. Make sure all electrical is in good shape and no corrosion.

Bob Bancroft · Dec 27, 2016

My old 78 IH had an air shift two speed axle. When that started "kicking out" it was a major rear end rebuild.
All the other old trucks I had/worked on had the electric shift with the little oil reservoir that was supposed to have 10W in it, but liked to get heavy rear end oil leaking into it. I would take the cover off, flush out the heavy oil, and refill with 10W, and be good for the winter.
Now I've got a truck with a newer style electric shift which takes no oil. It's an off road farm truck, and I resisted getting into the shifter, which worked terribly, as I was afraid it would be another rear end rebuild, which this truck isn't worth. I finally got into it last year, and found a bad circuit board! There's a little circuit board in there with goodies soldered to it, with a couple of tiny tiny micro switches on it also. It was clearly junk. I replaced the circuit board, and it shifts great! Best two speed shifter I've ever had!

tractorguy1951 · Dec 27, 2016

Check the ground wire. Have had that cause problems.

MarkB_MI · Dec 28, 2016

If it was only kicking out of high, I'd say it could be a bad shifter. Popping out of high and low means the rear end is shot.

Rear end

stonerock

Member

mtdan

Member

mtdan

Member

Bob Bancroft

Well-known Member

tractorguy1951

Member

MarkB_MI

Well-known Member

Similar threads