Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSCHEVROLET1990CHEVY VAN G20, 4.3 Z, 475/M40REPAIR AND DIAGNOSIS (SINGLE PAGE)SUSPENSIONWHEEL ALIGNMENTWHEEL ALIGNMENT SPECIFICATIONS & PROCEDURESALIGNMENT SPECIFICATIONSNOTES

1990 Chevrolet Chevy Van G20, 4.3 Z, 475/M40

Alignment Specifications: Notes

1990 Chevrolet Chevy Van G20, 4.3 Z, 475/M40SECTION Notes

WHEEL ALIGNMENT SPECIFICATIONS

Application

Fraction

Decimal

Astro & Safari

Camber (Degrees) ⁽¹⁾

2WD

51/64 ± 1/2

(0.8 ± 0.5)

4WD

57/64 ± 1/2

(.91 ± 0.5)

Caster (Degrees) ⁽¹⁾

2WD

2 45/64 ± 1/2

(2.2 ± 0.5)

4WD

3 1/2 ± 1

(3.5 ± 1.0)

Toe-in

2WD (Degrees)

3/32 ± 3/64

(0.1 ± .05)

2WD (Inches)

3/64 ± 1/32

(.05 ± .03)

4WD (Degrees)

-3/64 ± 3/32

(-.05 ± 0.1)

4WD (Inches)

-1/32 ± 3/64

(-.03 ± .05)

"C" & "K" Series

Camber (Degrees) ⁽¹⁾

"C" & K30

1/2 ± 1/2

(0.5 ± 0.5)

K10/20

21/32 ± 1/2

(.65 ± 0.5)

Caster (Degrees) ⁽¹⁾

"C" Series

3 3/4 ± 1

(3.75 ± 1.0)

"K" Series

3 ± 1

(3.0 ± 1.0)

Toe-in (Degrees) ⁽²⁾

1/4 ± 13/64

(.24 ± 0.2)

"G", "P", "R" & "V" Series

Camber (Degrees)

G10/20

1/2 ± 1/2

(0.5 ± 0.5)

G30

1/4 ± 1/2

(.25 ± 0.5)

P20

3/32 ± 1/2

(0.1 ± 0.5)

P30 (JB8 or JF9) ⁽³⁾

3/32 ± 1/2

(0.1 ± 0.5)

P30/35 (FS3) ⁽³⁾⁽⁴⁾

1 1/2 ± 1/2

(1.5 ± 0.5)

R10

7/8 ± 1/2

(0.7 ± 0.5)

R20/30

1/4 ± 1/2

(.25 ± 0.5)

"V" Series ⁽⁴⁾

1 ± 1/2

(1.0 ± 0.5)

Caster (Degrees)

⁽⁵⁾

Toe-in

"G" Series (Degrees)

0 ± 3/32

(0.0 ± 0.1)

P20 & P30

Degrees

1/8 ± 1/8

(.36 ± .12)

Inches

1/4 ± 1/16

(.18 ± .06)

P30 (With JB8 or JF9) ⁽³⁾

Degrees

1/2 ± 1/8

(0.5 ± .12)

Inches

1/4 ± 1/1

(.25 ± .06)

P30/35 (With FS3) ⁽³⁾

Degrees

1/16 ± 1/8

(.07 ± .12)

Inches

1/8 ± 1/1

(.12 ± .06)

"R" & "V" Series

Degrees

13/64 ± 56/64

(.15 ± 0.7)

Inches

3/32 ± 3/64

(.09 ± .04)

Lumina APV, Silhouette & Trans Sport

Camber (Degrees) ⁽⁶⁾

0 ± 1/2

(0.0 ± 0.5)

Caster (Degrees)

1 45/64 ± 1

(1.7 ± 1.0)

Toe-in (Degrees)

0 ± 3/32

(0.0 ± 0.1)

"S" & "T" Series

Camber (Degrees) ⁽¹⁾

7/8 ± 1/2

(0.8 ± 0.5)

Caster (Degrees) ⁽¹⁾

2 ± 1/2

(2.0 ± 0.5)

Toe-in (Degrees)

13/64 ± 13/64

(.15 ± .05)

⁽¹⁾	Left and right side adjustment must be within 0.5 degree.

⁽²⁾	Toe-in on left and right side must be set separately per wheel. Steering wheel must be held in straight-ahead position within plus or minus 5.0 degrees.

⁽³⁾	For explanation of Regular Production Option (RPO) codes, see Figure.

⁽⁴⁾	For reference only. No means of adjustment provided.

⁽⁵⁾	For caster specifications, see Figure.

⁽⁶⁾	Left and right side adjustment must be within 1 degree.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.