No tow haul?? [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: No tow haul??


mattthebrat
05-03-2009, 06:56 PM
......on Dad's truck, its an 06 LBZ w/6speed Allison.

He was towing a Bobcat yesterday
When he hit the button the light did not even flash
First time it kicked in after a while, then on the return trip nothing at all........

Any ideas??

mac2881994
05-03-2009, 09:32 PM
Check the wiring on the column were the shifter hooks in to it. Several people have had the same problem because of a broken wire in the column.

dansdieselp
05-03-2009, 09:46 PM
X2 thats what mine was. The wire attaches to a clip inside the column. The wire bends back and forth on that clip and eventually will break through. Took mine out and soldered some 20 gauge wires on it and rerouted it in the column. Good luck. Oh and does his tap shift work?

mattthebrat
05-03-2009, 11:27 PM
Thanks I figured someone had some experience with it.

Oh and does his tap shift work?

The tap shift is great its really great for stump pulling and pulling out tractors. Plus its fun for screwing around too!

AvalancheRacing
05-10-2009, 10:15 PM
I have the same problem on my 03. Tow haul mode and overdrive wasn't working. Later in the day it worked and now today again, nothing. Where in the column is the wire? Sorry for the ignorance, but I have never pulled apart one of these steering columns. Thanks.

dansdieselp
05-10-2009, 11:15 PM
It's inside the colum kinda forward of the key switch. The wire is mounted to the column by a clip and it pivots and breaks through there.