Gearvender Question
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Mountain Pass
Joined: Aug 2008
Posts: 225
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Gearvender Question
Those with Gearvenders, do you live the system in auto or manually kick it in? If I leave mine in auto, it shifts real hard. Is that normal? Once again, thanks for all the info.
Postmaster
Joined: Jun 2007
Posts: 2,621
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From: Sweetwater Texas
I'm still trying to get mine sorted out, I've never seen one actually work before. Do ya'll have the complicated wiring harnesses still on ya'lls GV's? My harness was trashed before I got my truck, so I now just have a toggle switch going to a solenoid on the side of the unit. But, when send power to it, it doesn't do anything, no clicks no ticks no nothing.
I just want this stupid thing to shift, I don't care if I don't have the extra fancy bells and whistles that this unit can do.
So, any ideas, experiences, or tips for me?
I just want this stupid thing to shift, I don't care if I don't have the extra fancy bells and whistles that this unit can do.
So, any ideas, experiences, or tips for me?
Postmaster
Joined: Jun 2007
Posts: 2,621
Likes: 1
From: Sweetwater Texas
Is the box about the size of a deck of cards with what looks like ethernet cable ports? I've got one of those wired to my steering column, but the wires going into the ports have all been snipped.
I have that little control module, then I have a switch under my steering columns that says gear vendors then you can switch either 20 or 40, then there is a second switch on the floor that is a headlight dimmer switch, but it hooks up to the wiring harness somehow. This thing just really baffles me.
I have that little control module, then I have a switch under my steering columns that says gear vendors then you can switch either 20 or 40, then there is a second switch on the floor that is a headlight dimmer switch, but it hooks up to the wiring harness somehow. This thing just really baffles me.
Post Fiend
Joined: Oct 2007
Posts: 10,501
Likes: 5
From: Faibanks Ak.
Mine has the deck of cards and a switch is all I know about but there is something else that shifts it automatically but I don't know what it is.
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Posting Guru
Joined: Jul 2004
Posts: 1,627
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From: West Valley Utah
Normally the gear vendor unit has an on/off switch, a manual/auto switch and the high beam looking button on the floor. It also has a speed sensor in the speedo cable by the trans/transfer case. It all wires into the control module (deck of cards looking thing)
In auto mode the trans will shift as normal. At around 50 mph or so the overdrive will shift. In manual mode you hit the floor button to shift into overdrive in 1st gear, shift to second and hit the button (turns of OD), hit the button again for 2nd over, shift to 3rd and hit the button (turns off OD), hit the button again for 3rd over. That would be for a C-6 trans. Works the same for manual trans.
Shifting that way gives you double the forward gears. The unit uses hydraulic pressure to shift and the pressure is not high enough till around 25 mph if I remember right. Gear Vendor recommends not using the unit at lower speeds. I use mine manually because of the hard shift when slowing down.
In auto mode the trans will shift as normal. At around 50 mph or so the overdrive will shift. In manual mode you hit the floor button to shift into overdrive in 1st gear, shift to second and hit the button (turns of OD), hit the button again for 2nd over, shift to 3rd and hit the button (turns off OD), hit the button again for 3rd over. That would be for a C-6 trans. Works the same for manual trans.
Shifting that way gives you double the forward gears. The unit uses hydraulic pressure to shift and the pressure is not high enough till around 25 mph if I remember right. Gear Vendor recommends not using the unit at lower speeds. I use mine manually because of the hard shift when slowing down.
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Hotshot
Joined: Feb 2004
Posts: 11,697
Likes: 3
From: Marengo, Iowa
My controller fried, so I have it hooked up manually. Since it is behind the Cummins and Dodge trans, with 4.10 gears, it is all in by 50, so we tend to shift it in around 45-50. It also downshifts pretty hard if you do it too soon, so we tend to hit that about 35. Not nearly as harsh then. Basically, I have the floor switch out of the loop, and the controller is no longer even hooked up. I went to a toggle as it was more convenient than the floor switch, not to mention other issues I was having with the floor switch. I simply apply 12v to the solenoid, then remove it, which basically is all the controller does.
Post Fiend
Joined: Oct 2007
Posts: 10,501
Likes: 5
From: Faibanks Ak.
I think that is what dean88 is needing to do. Mine is behind a T19 and if I forget and leave the switch in high it shifts at about 15mph and stays in high.
When you are up to speed you need to clutch it to shift either way but especially down.
When you are up to speed you need to clutch it to shift either way but especially down.
Hotshot
Joined: Feb 2004
Posts: 11,697
Likes: 3
From: Marengo, Iowa
I have the light still working to remind us that it is engaged... A lit switch works as well, but they seem to be pretty wimpy on light output. I would use some kind of indicator for a reminder, it does well.
Hotshot
Joined: Feb 2004
Posts: 11,697
Likes: 3
From: Marengo, Iowa
I don't use it in reverse, don't think you are supposed to, not to mention, it is too slow to engage the hydraulics, got to be around 25 mph... the drive shaft is what turns the pump on the unit.
Senior User
Joined: Sep 2007
Posts: 369
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From: halstead,Ks
If You call GV They will recommend an oil to use. It is a lot thicker then I would have thought. I was using automatic transmission
fluid in Mine and it shifted like thunder. I changed the oil and it still shifts firm but I can stand to shift with out letting off the throttle.
fluid in Mine and it shifted like thunder. I changed the oil and it still shifts firm but I can stand to shift with out letting off the throttle.
Post Fiend
Joined: Oct 2007
Posts: 10,501
Likes: 5
From: Faibanks Ak.
If You call GV They will recommend an oil to use. It is a lot thicker then I would have thought. I was using automatic transmission
fluid in Mine and it shifted like thunder. I changed the oil and it still shifts firm but I can stand to shift with out letting off the throttle.
fluid in Mine and it shifted like thunder. I changed the oil and it still shifts firm but I can stand to shift with out letting off the throttle.