1990 MODEL WHEEL ALIGNMENT SPECIFICATIONS. Pontiac Grand Prix 1990

VEHICLES AFFECTED: 1990 PASSENGER AND LIGHT DUTY TRUCKS

ATTACHED FOR YOUR INFORMATION ARE THE 1990 MODEL WHEEL ALIGNMENT SPECIFICATIONS FOR ALL GM PASSENGER CARS AND LIGHT TRUCKS.

1990 GM PASSENGER CAR ALIGNMENT SPECIFICATIONS (DEGREES)

CAR FRONT WHEELS TOTAL LINE MODEL CAMBER CROSS CASTER CROSS TOE ---- ------ ------ ----- ------ ----- --- A CENTURY, CELEBRITY, 0.00+/-.50 0.70 *1.70+/-0.70 0.70 0.00+/-.20 CUTLASS CIERA STE (AWD) B CAPRICE, CUSTOM CRUISER +0.80+/-.80 1.00 2.80+/-1.00 1.00 +0.10+/-.20 ESTATE WAGON

D BROUGHAM 0.00 +/-.50 1.00 3.00+/-1.00 1.00 0.00+/-.20

C DEVILLE, FLEETWOOD L,-.5+/-.50 0.50 *3.00+/-1.00 0.75 0.00+/-.20 R,+.5+/-.50

C/H BONNEVILLE, DELTA 88 +0.20+/-.50 0.75 *3.00+/-0.50 0.75 0.00+/-.20 98 REGENCY, ELECTRA PARK AVE, LE SABRE

E/K RIVIERA 0.00+/-.80 1.00 *2.30+/-1.00 1.00 +0.20+/-.20 TORONADO ELDORADO, SEVILLE

F CAMARO, FIREBIRD +0.30+/-.50 0.70 4.80+/-0.50 0.70 0.00 +/-.20

L BERETTA,CORSICA,TEMPEST +0.60+/-.60 1.00 *1.15+/-0.75 0.70 0.00 +/-.20 w FE3 -0.20+/-.60 1.00

J/N CAVALIER, SUNBIRD 0.00+/-.70 1.00 *1.70+/-1.00 0.70 0.00 +/-.20 SKYLARK GRAND AM, CUTLASS CALAIS

W REGAL,GRAND PRIX +0.70+/-.50 0.75 *2.00+/-0.50 0.75 0.00+/-.20 LUMINA, CUTLASS SUPREME *1.80+/-0.50 0.75

V ALLANTE 0.00+/-.80 1.00 *2.80+/-0.50 1.00 +0.20+/-.20

Z REATTA 0.00+/-.80 1.00 *2.80+/-0.50 1.00 +0.20+/-.20

T LEMANS, OPTIMA -0.33+/-.75 1.50 *1.75+/-1.00 1.00 0.00+/-.34

Y CORVETTE +0.50+/-.50 1.00 5.80+/- 0.80 1.00 0.00+/-.20

S GEO PRIZM -0.25+/-.75 1.50 0.90+/- 0.75 1.50 +0.08+/-.31

M/R GEO METRO, FIREFLY +0.31+/-1.00 1.00 2.25+/-0.50 1.00 0.00+/-.34 GEO STORM

CAR STEERING REAR WHEELS THRUST LINE MODEL WHL ANGLE CAMBER TOTAL TOE ANGLE ---- ------ A CENTURY, CELEBRITY, +/-3.5 *0.00 +/-.30 *0.00+/-.30 *0.00+/-.15 CUTLASS CIERA STE (AWD) *0.00 +/-.50 *+0.20+/-.20 0.00+/-.15 B CAPRICE, CUSTOM CRUISER +/-2.5 * * * ESTATE WAGON

D BROUGHAM +/-5.0 * * * C DEVILLE, FLEETWOOD +/-3.0 +0.20+/-.50 +0.10 +/-.20 0.00+/-.10

C/H BONNEVILLE, DELTA 88 +/-3.0 +0.20+/-.50 +0.10 +/-.20 0.00+/-.10 98 REGENCY, ELECTRA PARK AVE, LE SABRE

E/K RIVIERA +/-2.5 *-0.70+/-.30 +0.20 +/-.20 0.00+/-.15 TORONADO *-0.40+/-.30 ELDORADO, SEVILLE *-0.10+/-.30

F CAMARO, FIREBIRD +/-3.5 * *0.00+/-.30 *0.00+/-.15 (ref. only) (ref. only)

L BERETTA,CORSICA,TEMPEST +/-3.5 *-0.25 +/-.50 *+0.30+/-.25 0.00+/-.35 w FE3 TO COLUMN

J/N CAVALIER, SUNBIRD +/-5.0 *-0.25 +/-.50 *+0.25+/-.16 * SKYLARK GRAND AM, CUTLASS CALAIS

W REGAL,GRAND PRIX +/-3.5 *+0.10 +/-.50 *-0.10+/-.30 *0.00+/-.15 LUMINA, CUTLASS SUPREME TO COLUMN, *-0.15 +/-.50

V ALLANTE +/-2.5 +0.20 +/-.30 +0.20+/-.20 0.00+/-.15

Z REATTA +/-2.5 +0.20 +/-.30 +0.20+/-.20 0.00+/-.15

T LEMANS, OPTIMA +/-5.0 -0.50 +/-.50 +0.33+/-.30 0.00+/-.13

Y CORVETTE +/-2.0 +0.20 +/-.50 +0.20+/-.20 0.00+/-.15 RECOMMENDED S GEO PRIZM +/-5.0 -0.50 +/-.75 +0.30+/-.31 0.00+/-.15 RECOMMENDED M/R GEO METRO, FIREFLY +/-5.0 0.00 +/-.75 +0.43+/-.43 0.00+/-.15 GEO STORM RECOMMENDED

Tire-Wheel Systems NOTE: * NOT ADJUSTABLE. General Motors Proving Ground Milford, Michigan 48042-2001

1990 GENERAL MOTORS TRUCK WHEEL ALIGNMENT SPECIFICATIONS ALL SPECIFICATIONS IN DEGREES

STEERING TRUCK TOTAL WHEEL LINE CAMBER CROSS CASTER CROSS TOE ANGLE

FULL SIZE C-K +.50+/-.50 1.00 3.75+/-1.00 1.00 +.24+/-.20 +/-5.0 PICKUP

FULL SIZE G-10/20 +.50+/-.75 1.00 * +/-1.00 1.00 0+/-.20 +/-5.0 VAN G-30 +.25+/-.75

ASTRO,SARARI M +.80+/-.80 1.00 2.60+/-1.00 1.00 0+/-.20 +/-5.0 VAN L ALL WD +.91+/-.80 1.00 3.52+/-1.00 1.00 -.10+/-.20 +/-5.0

LUMINA,TRANSPORT,U .00 +/-.50 1.00 1.70+/-1.00 1.00 .00+/-.20 +/-5.0 SILHOUETTE APV

OPEN CHASSIS P +.25+/-.75 1.00 * +-1.00 1.00 +.34+/-.23 +/-5.0

SMALL BLAZER S-T +.80+/-.80 1.00 1.80+/-1.00 1.00 +.30+/-.20 +/-5.0 PICKUP

2WD FULL SIZE R-10 +.70+/-.75 1.00 * +-1.00 1.00 +.15+/-.23 +/-5.0

BLAZER,SUBURBAN R-20/30 +.25+/-.75

4WD FULL SIZE V ALL 1.50+/-.75 1.00 8.00+/-1.00 1.00 0.+/-.23 +/-5.0 BLAZER,SUBURBAN

NOTES: * ACTUAL "CORRECTED" CASTER ANGLE = ALIGNER ANGLE + FRAME RAIL ANGLE. (FRAME ANGLE IS NEGATIVE WHEN LOWER IN REAR; AND POSITIVE WHEN LOWER IN FRONT.)

V VEHICLE CASTER AND CAMBER ARE NOT ADJUSTABLE.

TIRE-WHEEL SYSTEMS

GENERAL MOTORS PROVING GROUND

MILFORD, MICHIGAN 48042 2001

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.