Lowering kit delete 05 yukon

[InspectahDEck]

I'm in the process of replacing frontend suspension due to bad ball joints and tie rods. This yukon has a lowering kit on it, maybe 2 or 3 inch drop. I'm wanting to bring it back to stock. It doesn't ride smooth, i can feel every pebble. Not sure where to start or what parts to buy. Any help appreciated in advanced

 

[Trey Hardy]

Is it 2wd or 4wd if it’s 2wd a set of stock coil springs and set of bilstein shocks should do the trick
Might need longer sway bar end links also

 

[89Suburban]

What is tire and rim size?

 

[InspectahDEck]

OK as a byproduct of replacing top and bottom control arms, sway bar link and tie rods, the front appears to be back to stock height. I don't think the shocks on the front were replaced when it was lowered as they are delphi, but I could be wrong. I was a bit concerned the moog sway bar link would be a different size but it was the same. Any concerns I should have with the front raised back to stock while the back is still low? Will post pics later.

Needs an alignment bad, front tires are visibly not vertical lol.

 

[Fless]

Is it 2wd or 4wd if it’s 2wd a set of stock coil springs and set of bilstein shocks should do the trick
Might need longer sway bar end links also

An '05 has front coil springs? Thought these were all torsion bar suspension up front. Sanity check?

 

[Trey Hardy]

An '05 has front coil springs? Thought these were all torsion bar suspension up front. Sanity check?

The 2wd used coil springs on some models and some had the torsion bars instead. I’ve seen it both ways I had a 04 gmc sierra 2wd that had the coil springs up front where my buddy’s 05 Silverado 2wd had torsion keys because I remember lifting hit truck 6” without a real lift because it diddnt have the 4wd to worry about

OK as a byproduct of replacing top and bottom control arms, sway bar link and tie rods, the front appears to be back to stock height. I don't think the shocks on the front were replaced when it was lowered as they are delphi, but I could be wrong. I was a bit concerned the moog sway bar link would be a different size but it was the same. Any concerns I should have with the front raised back to stock while the back is still low? Will post pics later.

Needs an alignment bad, front tires are visibly not vertical lol.

And no you can leave the stock how it is and it won’t hurt anything

 

[InspectahDEck]

I have torsion bars up front. Regarding the rear, shocks also appear stock, am I looking at new coil springs only, or is there other components I should check that might be needed to restore stock rear height?

 

[Alex_M]

The 2wd used coil springs on some models and some had the torsion bars instead. I’ve seen it both ways I had a 04 gmc sierra 2wd that had the coil springs up front where my buddy’s 05 Silverado 2wd had torsion keys because I remember lifting hit truck 6” without a real lift because it diddnt have the 4wd to worry about View attachment 424560

And no you can leave the stock how it is and it won’t hurt anything

My mind is blown. Sure enough RockAuto has lower control arms for coil spring front suspension in an 04 Sierra. Never seen a gmt800 with coils. Very neat.

 

[strutaeng]

The early GMT800 2wd trucks had front coils, at least my 99 Silverado does. I thought that was true for all 2wd 1500 trucks of this generation (except some Silverado SS). Isn't that also true of the early GMT800 SUVs? I thought at some point the SUVs switched to front torsion for all models. The L59 donor engine I swapped into the 99 was from an 04 Yukon XL and that one had front torsion bar in a 2wd configuration. I pulled the engine and thinking how the torsion bars kinda limit access to things like motor mounts, etc. But I'm not sure of the late 1500 GMT800 trucks.

And, of course, all the 2500HDs+ (and 1500 HDs) had front torsion bars, 2wd and 4x4. Same as the Suburban 2500s, maybe the Avalanche 2500s too? I'm not familiar with Avalanches. The 2500 Non-HDs 2wd also front coils.

I've never really figured out why some had front coils and some had torsion bars. My only guess is it had to do with GVWR or maybe to keep everything simpler from a manufacturing perspective?

 

[InspectahDEck]

OK I'm still looking to bring the front up to stock height. I noticed I am riding on the bump stock, is that normal?

 

[Fless]

OK I'm still looking to bring the front up to stock height. I noticed I am riding on the bump stock, is that normal?

View attachment 425611View attachment 425612

Yes, that's not a 'bump' stop, it's a 'jounce' stop. It's the fulcrum point for the front suspension and helps the frontend stability. It should contact the lower control arm at ride height.

 

[InspectahDEck]

I appreciate the info. What would I need to purchase to restore stock height at the front, considering the parts I've already installed:

Upper and lower control arms
Shocks
Tie rods
Sway bar link

 

[MarKist]

Looks to me, stock keys and adjustment and that should bring you back up