Can someone post their 03-06 Alignment Specs? (AWD)

7408 Views 10 Replies 2 Participants Last post by cadillac_tech, Jun 6, 2007

Playdrv4me

Discussion Starter · Jun 5, 2007 (Edited)

Still trying to nail down my alingment problem. Its much better now but theres nearly a degree (maybe more) of difference between the left and right side caster adjustments, which I was told today by an auto body shop should not be the case and there might be a damaged suspension component.

I dont have the alignment specs handy from my alignment, but I will post them later (believe its about +4.5 for the left and +5.5 for the right).

In the mean time, can someone post their last alignment specifications with stock wheels and tires? (Caster, Camber, Steering Axis Inclination, Included Angle etc.) My printouts dont have manufacturer specs for some of these.

Thanks,
ian.

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cadillac_tech

· #2 · Jun 5, 2007

Best spec's for stock:

Camber
LF = .3 deg RF = -.2deg
Caster
LF = 3.8deg RF = 4.5deg
Cross caster = .5deg
Total Toe = .10deg

Cross caster is best between .3deg and .8 deg and both sides are +/- 1.0 so there is room to work with.
If you will put big wheels & tires on, bring the camber closer to 0deg
If you have caster that is too low on one side and cannot be adjusted high enough, it has been hit. In this case the lower ball joint and/or control arm are bent, and the frame is likely pushed inward at the rear of that arm. Look for a curve in the torsion bar. That's the result of the frame pushed in. If this has happened the hub and knuckle are also an issue.

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Playdrv4me

Discussion Starter · #3 · Jun 6, 2007 (Edited)

I know the car had been in at least one fender bender. I figure a serious crack or bend should be visible but maybe Im not looking in the right places. I took SEVERAL pics of right side tonight and some from the left, and from the front left to the back of the car... See if you can tell anything from these...

(Sorry theres a bunch of pics, be patient)

Right Side LCA connection

Front Xmember from Right

Front Right lower control arm bolt

Front left lower control arm and frame

Front left upper control arm and frame

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Playdrv4me

Discussion Starter · #4 · Jun 6, 2007 (Edited)

This looks like front right, toward the rear of the truck, though im not sure

RF Wheel

RF Lower Control Arm

RF beam

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Playdrv4me

Discussion Starter · #5 · Jun 6, 2007 (Edited)

Right XMember

Closeup RF beam

LF beam key

LF Control arm bolt

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Playdrv4me

Discussion Starter · #6 · Jun 6, 2007

LF Frame to rear

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Playdrv4me

Discussion Starter · #7 · Jun 6, 2007

Heres what was on the Alignment Sheet:

LEFT FRONT CAMBER
ACTUAL 0.5* BEFORE -0.1*
LEFT FRONT CASTER
ACTUAL 3.6* BEFORE 3.8*
LEFT FRONT TOE
ACTUAL 0.02* BEFORE -0.37*
LEFT FRONT SAI
ACTUAL 10.7* BEFORE 11.3*
LEFT FRONT INCLUDED ANGLE
ACTUAL 11.2* BEFORE 11.1*

RIGHT FRONT CAMBER
0.3* /0.3*
RIGHT FRONT CASTER
4.4* /4.5*
RIGHT FRONT TOE
0.00* /0.36*
RIGHT FRONT SAI
10.8* /10.7*
RIGHT FRONT INCLUDED ANGLE
11.1* /11.0*

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Playdrv4me

Discussion Starter · #8 · Jun 6, 2007

Whoops, forgot these:

*FRONT*
CROSS CAMBER 0.3*/-0.4* SPEC RANGE: -0.5* to 0.5*
CROSS CASTER -0.8*/-0.6* SPEC RANGE: -1.2* to -0.2*
TOTAL TOE 0.03*/-0.01* SPEC RANGE: -0.10* to 0.30*

LEFT REAR
CAMBER: -0.8*/-0.7*
TOE: 0.28*/0.25*

RIGHT REAR
CAMBER: -0.1*/-0.1*
TOE: -0.22*/-0.21*

TOTAL TOE: 0.06
THRUST ANGLE: 0.25

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cadillac_tech

· #9 · Jun 6, 2007

Those #'s look pretty good. You should roll straight (it may want to drift left). If it does anything else, it's not the alignment.

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Playdrv4me

Discussion Starter · #10 · Jun 6, 2007

cadillac_tech said:
Those #'s look pretty good. You should roll straight (it may want to drift left). If it does anything else, it's not the alignment.

Thanks for looking. Did you notice anything that stuck out with my suspension components above? I know some about the way things should look down there, but obviously not as much as you do.

And your right, sometimes it does want to go left, but it predominantly drifts right, especially on roads with alot of crown, I have to keep the wheel pretty tilted to the left. It doesnt pull right off the road, but on a perfectly level road, it still wants to go right somewhat.

Thx,
Ian.

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cadillac_tech

· #11 · Jun 6, 2007

Your cross caster is good for the road crown. Crossing your front tires right to left should fix the right pull. Nothing stands out in the pictures.

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