Auto 4WD

[1LOW4X4]

Well the t-case when put in neutral over rides the trans

 

[Riggs]

The T case is engaged, but when wheel slip is sensed the front diff engages. It is a seamless transition and there is no worries about an engine over revving.

Thanks J-rod!


Cody, this is what I found for my truck:

Well I don’t know about 1997 or 1999 chevy’s but for my 1998 the following is from the owners manual.

1. Set the parking brake.
2. Start the Vehicle.
3. Connect the vehicle to the towing vehicle.
4. Put the transmission in neutral.
5. Shift the transfer case to 2HI.
6. Simultaneously press and hold the 2HI and 4LO buttons for 10 seconds. The red NEUTRAL light will come on when the transfer case shift to neutral is complete.
7. Shift the transmission to REVERSE (R) for one second, then shift the transmission to AUTOMATIC OVERDRIVE (D) for one second.
8. Turn the ignition OFF.
9. Place the transmission shift lever on PARK (P).
10. Release the parking brake prior to towing.

What is the advantage of towing a vehicle with the T-case in Neutral VS the trans in Neutral? Does it prevent damage to the internals of the trans?

if you were pulling the truck with all 4 wheels on the ground you wouldnt do damage to the t-case and transmission, the only other way of towing it would be to pull driveshaft, or use a flatbed

 

[nubuilder]

Well the t-case when put in neutral over rides the trans

True, but if you had all 4 wheels on the ground, you'd still need the key in the ignition to unlock the steering wheel so why not just put the trans in Neutral? I guess its a convenience thing.

Cody, the 400's are setup so that the front driveshaft only spins in 4wd right? In 2wd it stays stationary I think (kind of hard to look ).

 

[Riggs]

Well the t-case when put in neutral over rides the trans

True, but if you had all 4 wheels on the ground, you'd still need the key in the ignition to unlock the steering wheel so why not just put the trans in Neutral? I guess its a convenience thing.

Cody, the 400's are setup so that the front driveshaft only spins in 4wd right? In 2wd it stays stationary I think (kind of hard to look ).

it would be if you were pulling it like behind a motorhome or something

and yes your truck the front driveshaft / front differential is only engaged when in 4wd, in 2wd the driveshaft doesn't move

 

[1LOW4X4]

Well the t-case when put in neutral over rides the trans

True, but if you had all 4 wheels on the ground, you'd still need the key in the ignition to unlock the steering wheel so why not just put the trans in Neutral? I guess its a convenience thing.

Cody, the 400's are setup so that the front driveshaft only spins in 4wd right? In 2wd it stays stationary I think (kind of hard to look ).

My Steering wheel has no lock

 

[Riggs]

i should also point out that putting the transmission in Neutral and putting the t-case in neutral are completely different, if you were pulling the truck you would need both in neutral

 

[nubuilder]

i should also point out that putting the transmission in Neutral and putting the t-case in neutral are completely different, if you were pulling the truck you would need both in neutral

OK. I was clear on this before this statement (no, not the part about them being different).

Why both in neutral? Wouldn't one or the other be enough?

 

[Riggs]

i should also point out that putting the transmission in Neutral and putting the t-case in neutral are completely different, if you were pulling the truck you would need both in neutral

OK. I was clear on this before this statement (no, not the part about them being different).

Why both in neutral? Wouldn't one or the other be enough?

no because the driveshaft is still spinning, so that is going into the t-case, its just good way to know your not doing any harm

my dad owns a towing company and you can do a lot of damage by towing a 4wd vehicle without the t-case in N, he now has all flatbeds with stingers on the back so don't have to worry about it anymore, when you start hauling semis its the same thing then either pick them up from the back so you don't have to pull the driveshaft or pick it from the front and pull it, really not that hard either way

 

[nubuilder]

i should also point out that putting the transmission in Neutral and putting the t-case in neutral are completely different, if you were pulling the truck you would need both in neutral

OK. I was clear on this before this statement (no, not the part about them being different).

Why both in neutral? Wouldn't one or the other be enough?

no because the driveshaft is still spinning, so that is going into the t-case, its just good way to know your not doing any harm

my dad owns a towing company and you can do a lot of damage by towing a 4wd vehicle without the t-case in N, he now has all flatbeds with stingers on the back so don't have to worry about it anymore, when you start hauling semis its the same thing then either pick them up from the back so you don't have to pull the driveshaft or pick it from the front and pull it, really not that hard either way

OK...T-case and Trans in Neutral when towing. Gotcha.

Does this method (holding 2 buttons whatever they may be) apply to all vehicles or is it just a GM thing?

 

[Riggs]

i should also point out that putting the transmission in Neutral and putting the t-case in neutral are completely different, if you were pulling the truck you would need both in neutral

OK. I was clear on this before this statement (no, not the part about them being different).

Why both in neutral? Wouldn't one or the other be enough?

no because the driveshaft is still spinning, so that is going into the t-case, its just good way to know your not doing any harm

my dad owns a towing company and you can do a lot of damage by towing a 4wd vehicle without the t-case in N, he now has all flatbeds with stingers on the back so don't have to worry about it anymore, when you start hauling semis its the same thing then either pick them up from the back so you don't have to pull the driveshaft or pick it from the front and pull it, really not that hard either way

OK...T-case and Trans in Neutral when towing. Gotcha.

Does this method (holding 2 buttons whatever they may be) apply to all vehicles or is it just a GM thing?

i know that 1988-2011 GM trucks can be i dont know about the rest