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Wheel Alignment Specifications

WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 1991 Pontiac Trans Sport, 1991 Oldsmobile Silhouette, 1991 Oldsmobile Bravada, 1991 GMC Vandura Special, and 1991 GMC Vandura. However, it is still accessible from the selected car via links, so may be relevant.
WHEEL ALIGNMENT SPECIFICATIONS (ASTRO & SAFARI)

Application Fraction Decimal
Camber (Degrees) (1) 13/16 ± 1/2 (0.8 ± 0.5)
Caster (Degrees) (1) 2 11/16 ± 1/2 (2.7 ± 0.5)
Toe-in (Degrees) 3/16 ± 1/8 (.19 ± .13)
Toe-in (Inches) 3/32 ± 1/16 (.09 ± .06)
(1) Left and right adjustments must be within 0.5 degree of each other.
WHEEL ALIGNMENT SPECIFICATIONS ("C" SERIES)

Application Fraction Decimal
Camber (Degrees) (1) 1/2 ± 1/2 (0.5 ± 0.5)
Caster (Degrees) (1) 3 3/4 ± 1 (3.75 ± 1.0)
Toe-in (Degrees) (2) 7/32 ± 13/64 (.24 ± 0.2)
(1) Left and right adjustments must be within 0.5 degree of each other.
(2) Toe-in on left and right side must be set equally per wheel. Steering wheel must be held in straight-ahead position within plus or minus 5.0 degrees.
WHEEL ALIGNMENT SPECIFICATIONS ("K" SERIES)

Application Fraction Decimal
Camber (Degrees) (1)
K15/25 21/32 ± 1/2 (.65 ± 0.5)
K35 1/2 ± 1/2 (0.5 ± 0.5)
Caster (Degrees) (1) 3 ± 1 (3.0 ± 1.0)
Toe-in (Degrees) (2) 7/32 ± 13/64 (.24 ± 0.2)
(1) Left and right adjustments must be within 0.5 degree of each other.
(2) Toe-in on left and right side must be set equally per wheel. Steering wheel must be held in straight-ahead position within plus or minus 5.0 degrees.
WHEEL ALIGNMENT SPECIFICATIONS ("G", "P", "R" & "V" SERIES)

Application Fraction Decimal
Camber (Degrees)
G15/25 1/2 ± 1/2 (0.5 ± 0.5)
G35 1/4 ± 1/2 (.25 ± 0.5)
P35 (w/ FS3) (1)(2) 1 1/2 ± 1/2 (1.5 ± 0.5)
P35 (w/out FS3) (1) 3/32 ± 1/2 (0.1 ± 0.5)
P35 (w/ JB8 or JF9) (1) 3/32 ± 1/2 (0.1 ± 0.5)
R15 11/16 ± 1/2 (0.7 ± 0.5)
R25/35 1/4 ± 1/2 (.25 ± 0.5)
"V" Series (2) 1 ± 1/2 (1.0 ± 0.5)
Caster (Degrees) (3) (3)
Toe-in
"G" Series (Degrees) 0 ± 3/16 (0.0 ± .19)
P35 (With FS3) (1)
Degrees 1/16 ± 1/8 (.07 ± .12)
Inches 1/8 ± 1/16 (.12 ± .06)
P35 (Without FS3) (1)
Degrees 3/8 ± 1/8 (.38 ± .13)
Inches 1/4 ± 1/16 (.18 ± .06)
P35 (With JB8 or JF9) (1)
Degrees 1/2 ± 1/8 (0.5 ± .12)
Inches 1/4 ± 1/16 (.25 ± .06)
"R" Series (Degrees) 3/16 ± 1/8 (.19 ± .13)
"R" Series (Inches) 3/32 ± 1/16 (.09 ± .06)
"V" Series (Degrees) 1/8 ± 1/8 (.13 ± .13)
"V" Series (Inches) 1/16 ± 1/16 (.06 ± .06)
(1) See Fig 1 for explanation of Regular Production Option (RPO) codes.
(2) For reference only. No means of adjustment is provided.
(3) See Fig 1 & 18 for caster specifications.
WHEEL ALIGNMENT SPECIFICATIONS (LUMINA APV, SILHOUETTE & TRANS SPORT)

Application Fraction Decimal
Camber (Degrees) (1) 0 ± 1/2 (0.0 ± 0.5)
Caster (Degrees) 1 11/16 ± 1 (1.7 ± 1.0)
Toe-in (Degrees) 0 ± 3/16 (0.0 ± .19)
(1) Left and right adjustments must be within .07 degree of each other.
WHEEL ALIGNMENT SPECIFICATIONS ("S" & "T" SERIES)

Application Fraction Decimal
Camber (Degrees) (1) 13/16 ± 1/2 (0.8 ± 0.5)
Caster (Degrees) (1) 2 ± 1/2 (2.0 ± 0.5)
Toe-in (Degrees) (2) 5/16 ± 3/32 (.31 ± .09)
(1) Left and right adjustments must be within 0.5 degree of each other.
(2) Toe in left and right side to be set separately per wheel and steering wheel must be held in straight ahead position within ± 5.0 degree.
WHEEL ALIGNMENT SPECIFICATIONS (SYCLONE)

Application Fraction Decimal
Camber (Degrees) (1) 3 1/2 ± 1/2 (3.5 ± 0.5)
Caster (Degrees) (1) 0 ± 1/2 (0.0 ± 0.5)
Toe-in (Degrees) (2) 5/32 ± 2/32 (.16 ± .06)
(1) Left and right adjustments must be within 0.5 degree of each other.
(2) Toe in left and right side to be set separately per wheel and steering wheel must be held in straight ahead position within ± 5.0 degree.
NOTE: For Measurement "BC", see Figure.
Fig 1: Caster Specifications ("P", "R" & "V" Series)
G91C13526Courtesy of GENERAL MOTORS CORP.
Fig 2: Caster Specifications ("G" Series)
G91D13527Courtesy of GENERAL MOTORS CORP.
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