2011+ Duramax owners

Level empty = Cali lean towing... Get air bags

I have an '11 Dmax. Doesn't need levelling as my TH is only 19000lbs.

ksss wrote:
I did the Cognito kit on my 3500HD, I went with the shock extensions to use the Rancho shocks that it came with. I have some friends that did the Fox shocks but personally my arse is not so dialed in that I can tell the difference between the Fox and the Ranchos. I think the Cognito kit is excellent. I would not want the pickup raised any higher (as far as going with a full lift kit). It rides level and even with a heavy gooseneck load it stays pretty level. I turned the stock keys on my 2011 2500HD and I will never do that again. That is why I went with the Cognito set up this time. The ride is excellent and it looks excellent, I dare say OEM quality. The Cognito stage I bought was only like $750, the next stage up with the Fox shocks was $1100.

only 1100 with the fox shocks, that is a hell of deal!! i was looking to level mine and was told 3k for the UCA, keys and shocks, installed and aligned. just to get the fox 2.0 shock it about 550-600 for all 4

to the OP it all depends on your budget. there are awesome leveling kits out there. if you read around the duramax fourm there is a ton of info. congito is thought of as being the best. check out norcaltruck.com they have alot of different kits to level based on your budget. if i remember right fox made a shock that is just for the cognito kit.

ksss wrote:
I did the Cognito kit on my 3500HD, I went with the shock extensions to use the Rancho shocks that it came with. I have some friends that did the Fox shocks but personally my arse is not so dialed in that I can tell the difference between the Fox and the Ranchos. I think the Cognito kit is excellent. I would not want the pickup raised any higher (as far as going with a full lift kit). It rides level and even with a heavy gooseneck load it stays pretty level. I turned the stock keys on my 2011 2500HD and I will never do that again. That is why I went with the Cognito set up this time. The ride is excellent and it looks excellent, I dare say OEM quality. The Cognito stage I bought was only like $750, the next stage up with the Fox shocks was $1100.

Cognito Leveling Kit or Congnito Lift Kit?

I did the Cognito kit on my 3500HD, I went with the shock extensions to use the Rancho shocks that it came with. I have some friends that did the Fox shocks but personally my arse is not so dialed in that I can tell the difference between the Fox and the Ranchos. I think the Cognito kit is excellent. I would not want the pickup raised any higher (as far as going with a full lift kit). It rides level and even with a heavy gooseneck load it stays pretty level. I turned the stock keys on my 2011 2500HD and I will never do that again. That is why I went with the Cognito set up this time. The ride is excellent and it looks excellent, I dare say OEM quality. The Cognito stage I bought was only like $750, the next stage up with the Fox shocks was $1100.

I bought some new spring mounts that lower the rear but never installed them, didn't need to. Don't remember where I found them though. Gave them to my son.

this is what I bought but never used:

click here

WE did the Cognito leveling kit with the keys and upper A Arms and shocks on my son's 11 D-Max. Didn't turn the bars up at all just leveled it rides a little firmer because of new shocks but that's it. Wasn't hard to install I think we had about 3 hrs into it.

If u want stock ride quality go 4" lift and don't crank the Torsion bars. Leveling requires cranking of the T-bars which compromises the ride.