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Thread: Death wobble!!!
03-19-2014, 03:44 PM #1
OK brothers and sisters...
96 K1500 Burb. 179k
Records from PO do not show TRE's, BJ's, Upper A-Arms, Pitman Arm or Drag Link / Idler Arm ever being replaced.
Felt it a little when running 275/70/17's.
Swapped back to OE 16's with 275/70/16 (OE size) Michelin LTX MS's
Feel it slightly at low speed.
On acceleration from +/-30 - +/-50 mph it wants to rip the steering wheel out of your hands.
So bad the whole truck shudders.
Feels like it may be primarily coming from the left/driver's side.
But that may just be perception because I am in the driver's seat.
Above +/-50 it settles down in to a small steady "shimmy".
Have taken it all the way up to +/-80 with no change.
I believe in working "simple to complex" and don't like throwing parts at problems.
Ain't nobody got time (or money) fo dat!
Thoughts? Ideas? Suggestions?
Thanky.Some stuff with wheels and motors...
03-19-2014, 04:06 PM #2
there are tons of things that can cause this. I would start by jacking up the front end and wiggling each tire left and right, up and down, looking for any excessive movement in steering components. Check the front wheel hubs while you have it up. On my 95 i had the same issue, but after a lift kit install, I had to retorque all the components and the culprit ended up being the idler arm bracket. Check your front and rear u-joints also.
1995 Silverado 4x4
6" BDS Suspension Lift-3" Body Lift-Add A Leaf in rear -Trailmaster SSV Shocks-Duel Steering Stabilizer Kit -AirAid Cold air intake-
4.56 Gears with Detroit Auburn Locker-Pro-Comp Traction Bars with duel shocks-Aluminum Skid Plate Kit-38.5" x 16.5" Mickey Thompson Baja Claws-Constant Dropping fuel gauge
2005 Yukon XL Jet Power Programmer, Bilstein Shocks, Bilstein rear springs, Helwig Anti-sway bars, EGR Window Visors, EGR Hood Shield, Denali Headlights, Headlight harness upgrade, GE NightHawk Bulbs, White Night Rear lighting system, Russell Braided SS brake lines, PowerStop Brake pads, PowerStop cross drilled and Slotted Rotors, http://www.gmtruckclub.com/forum/sho...5-GMC-Yukon-XL
2002 Silverado ext cab 2wd (Sold)
2003 Yukon XL (Totaled)
03-19-2014, 04:16 PM #3
Copied from an old thread:
These are not MY original 16" wheels or tires... I took them in partial trade for the 17's I was running... Until I can pick up my 18's...
Three of the tires appear very good... 9/32" and evenly worn.
One looks like crap. Rounded off shoulders, 3/32", dry rotted, etc...
I just bolted them on. And really don't want to spend $$ getting them re-balanced since they only need to be on there another week or so.
Avoiding paying for an alignment too... Though I do have a good shop close by who warrantees their work.
2.5" Torsion Bar Keys and Full Length AAL w/ new shocks going in later in spring.
Will do new shocks, TRE's, sway bar links, and possibly upper A-arms w/ new joints then.
Hopefully won't have to do Pitman / Idler arms. Meh.
May replace that one shiznitty tire and see what happens...
- - - Updated - - -
(I have fought DW before... have been a Jeep-guy for years... It suxors.)
Not thinking driveline. Very specifically coming from front end. Was minor before tire swap. Got really bad after.
03-19-2014, 06:45 PM #4
Please post pics of the build!
03-24-2014, 02:01 AM #5
I'd be throwing money at making it safe to drive before I threw money at a build...
03-24-2014, 09:36 AM #6
Finally got to jack the front end up and yuck on the tires this morning...
24-hours shifts + kids with stomach bug + Chuck with stomach bug put a damper on things...
Getting that one shiznitty tire replaced this morning.
Remind me folks...
Wobble top + bottom = bad ball joints?
Wobble left + right = bad TRE's, etc?
Or the other way around.
BJ's appear good and snug, A-arm bushings the same.
Sway bar end links good. Sway bar bushings pretty dry rotted.
Got +/- 1/2" play Left + Right in wheel with corresponding amount of motion in Pitman arm / drag link.
03-24-2014, 09:42 AM #7
03-24-2014, 08:55 PM #8
Knowing the maintenance history on this truck, I did not expect BJ's, TRE's, or other major front end components to suddenly start to fail in the +/-4000 miles I have put on it.
It's a one owner, the PO was meticulous, and did nothing himself. Everything done since 60k miles in 2000 was done either by a reputable dealership or a well respected local shop and has invoices to support it.
That being said, it appears 95% of the problem WAS that one fawked up tire.
Had a guy I know at a local used tire shop match the other three for tread pattern and depth as best as he could today.
$40 and one 6/32 General AmeriTrac SUV with 37psi later, 95% of the wobble is gone.
Pry bar trick showed less than 1/4" of vertical movement in BJ's.
Lateral movement all seemed to coincide with normal wear of bushings and joints. Nothing excessive.
Got a slight shimmy at various speeds during shakedown run, but I attribute that to the fact that I **KNOW** the other three tire pressures are not equal.
Always work simple to complex and cheap to expensive...
Noticed when I got home that the offending tires was 5 years older than the other three too...
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