New to the forum & have major problems...Help!

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Star

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I am new to the forum and came seeking help, my baby has issues.
I have a 2003 Yukon SLT 4x4 with a 4" Superlift and 33" Dick Cepeks.

The problem: When i accelerate from a stop it sways very bad, more like jerks left & right. It also jerks hard back and forth when I hit a bump. The ABS grabs when I'm braking going over small bumps and my service stability keeps turning on, but goes away when I turn the engine off and re-start it. It's very unstable and am being told I should not drive it.

My problems started about a year ago with a clunk in the front end. We've been working on it non-stop ever since. Everytime we fix something a new symptom appears. I will spare all the details leading up to my current situation but just tell you that we've changed the following:
Sway bar bushings and end-links
Upper ball joints
wheel bearings
Tie rod ends
pitman arm
Also have had it aligned several times.

One shop said my rear dif posi-lock governor was stuck and it was causing the problem. They also diagnosed the upper ball joint problem, which we fixed.

Chase Chevrolet says there's nothing wrong with my front-end but they wanted to open my rear-dif and look at it. The day after taking it from Chase, big o tires said my pitman arm had play so we changed it.

I was told today after the new pitman arm was installed that they've never seen anything like this before. These mechanics, who are my husbands friends and he trusts, say we may just need to keep throwing parts at it, eventually we'll find it. They say it may not even be the front end, it may be in the rear-end causing the front-end to sway. But after further inspection they said the control arms look like they're moving, which my husband observed. Those will be changed tomorrow.

So now I have 2 places saying rear dif and another that says it could be rear-end. Yet we keep changing front-end components!! If the new control arms don't work I will take it to a rear-end shop and have it popped open and looked at.

Has anyone out there experienced this problem? Please, help!!! I love my truck but I'm about to drive it off a bridge!! :emotions122:
 

BOSS

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Welcome to the forum! We don't have many ladies so BIG WELCOME!

Does it sway in 4x4?

BOSS
 

BOSS

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What codes are you pulling?

Does it still happen when you disable traction control and stabilitrac (I assume your has both)? (Hold button for 5+ seconds)

B
 

BOSS

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Copied this thread into the 99 gen section, trying to get some of these 4x4 guys to chime in.

B
 

blackcoffee

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Your not looking for play, your looking for something that is either broken or not working. Unless I saw the truck in person I can't really be of help. Stop Throwing money into it and just find a suspension shop. Or take some pictures of the problem areas and put them up on here. Welcome to the forum btw!
 

puckhead

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Welcome aboard! Hope your problem gets fixed quickly here! Nice truck btw!
 

bowtiefreak

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I doubt the rear is the issue. If the G80 locked up it would fail and trust me you would know.

Control arm bushings could be a part of that. let us know what the outcome is after that.

Check the shocks also, might be a broken mount or something
 
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Star

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Had a change of plans today, my husband did not change the control arms because I took it to another 4x4 shop and they said that's not my problem. They did say they're a little cracked but not bad enought to be causing the problem.
This is what they've found so far:

1) Passenger uper ball joint is shot (was just changed 3 weeks ago)

2) Outer tie rod ends have alot of play (inner was changed previously, not outer)

3) Front torsion bars need to be replaced because they are fully extended and no adjustment left in them

They also recommend new shocks and think my rear springs may be weak and need to be replaced with a heavier-duty set. They say they won't be sure about the rear-end until the front end is tightened up.

It's still at the shop right now so I can't get any pics or video posted at this time.

Any thoughts??
 

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