[JTM]

I've been dealing with this problem for 2 years now. I am scared to take my Titan out in snow because the truck will clunk in the back and then release. It feels like the driveline just disconnects for a split second then slams back....it's a split second thing. I can't figure out why...it only happens when its snowing or when I drive though a gust of wind that has stirred up some snow. The truck is a 2011 Pro 4X 4x4. This occurs in both 4 wheel and 2 wheel drive. Also occurs if VDC is on or off. Has anyone experienced this?

The truck has been to the dealer numerous times but they cannot find the problem. Rear differential fluid was also changed.

 

[HRTKD]

Sometimes when I'm in 4x4 mode and all four wheels have poor traction my truck seems like it is hopping up and down like a bucking bronco (my exposure to bucking broncos is limited to an ill behaved shetland pony with a death wish but you get the idea). But it never does that in 4x2.

Next time you're in snow try holding down the brake slightly while accelerating. I think that will fool the computer into not kicking in the ABLS system that tries to keep traction when driving forward. That will at least rule in/out the ABLS as the culprit.

 

[DeadRiver]

I've had my truck doors deep in snow without issue. I'm not even sure what the issue on yours could be. I do have a pretty simple 04 though.

 

[JTM]

Sometimes when I'm in 4x4 mode and all four wheels have poor traction my truck seems like it is hopping up and down like a bucking bronco (my exposure to bucking broncos is limited to an ill behaved shetland pony with a death wish but you get the idea). But it never does that in 4x2.

Next time you're in snow try holding down the brake slightly while accelerating. I think that will fool the computer into not kicking in the ABLS system that tries to keep traction when driving forward. That will at least rule in/out the ABLS as the culprit.

Thanks for the info...I will try that. It is so strange that the dealer could not find a solution to this even when they experienced it themselves.

 

[JTM]

So do you think the clunking noise in snow is the ABLS applying braking to a slipping rear wheel at high speed? To fool the computer do you use your left foot to brake slightly while accelerating with your right foot? Has this actually worked for you?

 

[HRTKD]

In my case the truck was moving very slowly, not more than 2 MPH. The wheels were spinning faster than that but not like 30 MPH.

I haven't tried the left foot braking while right foot accelerator trick in snow when I encountered the bucking problem. But I have used that trick when doing a burnout and had no bucking. But that was on dry pavement.

 

[JTM]

Another question: If this is successful and the ABLS is bypassed when does it kick back in? When I stop or after I shutdown the truck and restart? Thanks again.

 

[HRTKD]

ABLS would kick back in again when your foot isn't on the brake.