GMC Workshop Service and Repair Manuals

Alignment: Specifications
Alignment Specifications

With I-Beam Suspension

Caster, Degrees

Checking [01] [03] ........................................................................................................................................................................................  +1.25 +/- 0.5
Setting [02] [03] ............................................................................................................................................................................................  +1.25 +/- 0.5

Camber, Degrees

Checking [01] ................................................................................................................................................................................................  +1.25 +/- 0.5
Setting [02] ....................................................................................................................................................................................................  +1.25 +/- 0.5

Toe-In, Degrees

Checking ........................................................................................................................................................................................................  0.12 +/- 0.12
Setting ............................................................................................................................................................................................................  0.12 +/- 0.12

Toe-in, Inches

Checking ................................................................................................................................................................................................  0.06 in +/- 0.06 in
Setting ....................................................................................................................................................................................................  0.06 in +/- 0.06 in

[01] Left and right side should be equal within +1.0 deg.
[02] Left and right side should equal within +0.5 deg.
[03] No means of adjustment provided.

Without I-Beam Suspension

Caster, Degrees

Checking [01] ................................................................................................................................................................................................  3.75  +/-  2.0
Setting [02] ....................................................................................................................................................................................................  3.75  +/-  1.0

 Camber, Degrees

Checking [01] ..................................................................................................................................................................................................  0.5  +/-  1.0
Setting [02] ......................................................................................................................................................................................................  0.5  +/-  0.5

 Toe-In, Degrees

Checking [03] ................................................................................................................................................................................................  0.24  +/-  0.2
Setting [03] ..................................................................................................................................................................................................................  0.24

Ball Joint Wear, inches [04] ............................................................................................................................................................................................  0.08

Note: Caster angle must be corrected to level frame angle.

[01] Left and right side should be equal within +1.0 deg.
[02] Left and right side should equal within +0.5 deg.
[03] Toe-in left and right side to be set equally per wheel and steering wheel must be held in straight ahead position within +/-5.0 deg.
[04] Refer to /Steering & Suspension/ Ball Joint Inspection for inspection procedure.