PASSENGER CAR ALIGNMENT SPECIFICATIONS
VEHICLES AFFECTED: ALL 1987 GM PASSENGER CARS
Alignment specifications for all 1987 GM passenger cars are being published here due to some recent specification changes. Many of the recent changes have been reductions in toe for improved tire wear.
Four-wheel alignment is recommended whenever rear suspension is adjustable. Four-wheel alignment equipment, such as in the GM Dealer Equipment Catalog, is recommended. Alignment equipment must be calibrated on a regular basis.
1987 GM PASSENGER CAR ALIGNMENT SPECIFICATIONS
Rear Wheel Drive (RWD) ---------------------- Caster Camber ------ Max. Cross ------ Max Cross Caster Camber ------ ------ Caprice +2.8 DEG +/- 1 DEG 1 DEG +.8 DEG +/- .8 DEG 1 DEG Safari Wagon, Custom Cruiser, Wgn, Estate Wagon
Cad. Brougham +3 DEG +/- 1 DEG 1 DEG +.3 DEG +/- .5 DEG 1 DEG
Camaro, Firebird +5 DEG +/- .5 DEG .8 DEG +1 DEG +/- .5 DEG .7 DEG
Buick Regal, +2.8 DEG +/- 1 DEG 1 DEG +.5 DEG +/- .8 DEG 1 DEG Cutlass Supreme, Grand Prix, Monte Carlo, - w/manual strg. +.8 DEG +/- 1 DEG 1 DEG +.5 DEG +/- .8 DEG 1 DG
Chevette,T-1000 +4.7 DEG +/- 2 DEG 2 DEG +.2 DEG +/- .7 DEG 1.4 DEG
Fiero +5 DEG +/- 2 DEG 2 DEG +.5 DEG +/- .8 DEG 1.6 DEG Rear -1 DEG +/- .5 DEG
Corvette +5.5 DEG +/- .8 DEG 1 DEG +.8 DEG +/- .5 DEG 1 DEG Rear +.4 DEG +/- .5 DEG
Front Wheel Drive (FWD)
Century, +1.7 DEG +/- 1 DEG 2 DEG 0 +/- .5 DEG 1 DEG Celebrity, Ciera, 6000
LeSabre, +2.5 DEG +/- .5 DEG .75 DEG +.2 DEG +/-.5 DEG .75 DEG Electra, Park Ave. Olds 88,98, Bonneville, Rear -.3 DEG +/-.5 DEG
Cad DeVille +2.5 DEG +/- .5 DEG .75 DEG (L-.5 DEG .75 DEG R + .5 DEG +/- .5 DEG Rear -.3 DEG +/- .5 DEG
Riviera +2.3 DEG +/- .1 DEG 1 DEG 0 +/-.8 DEG 1 DEG Rear -.7DEG +/-.3 DEG
Toronado +2.3 DEG +/- 1 DEG 1 DEG 0 +/-.8 DEG 1 DEG Rear -.4 DEG +/-.3 DEG
Eldorado,Seville +2.3 DEG +/- 1 DEG 1 DEG 0 +/- .8 DEG 1 DEG Rear -.1 DEG +/- .3 DEG
Firenza, Calais +1.7 DEG +/- 1 DEG 1 DEG +.8 DEG +/- .6 DEG Skyhawk, Somerset, Skylark,Cimarron Corsica,Berett,a Cavalier, J-2000 Grand AM
Cavalier Z-24, +1.7 DEG +/- 1 DEG 1 DEG +.8 DEG +/- .6 DEG 1 DEG J-2000 with 60 series tires
Allante +2.8 DEG +/- .5 DEG 1 DEG 0 +/-.8 DEG 1.6 DEG Rear +.2 DEG +/-.3 DEG
Steering Thrust Total Toe Wheel Angle Angle --------- ----------- ----- Caprice +.1 DEG +/- .2 DEG +/- 2.5 DEG Safari Wagon, Custom Cruiser, Wgn, Estate Wagon
Cad. Brougham +.1 DEG +/- .2 DEG +/- 5 DEG
Camaro, Firebird +.1 DEG +/- .2 DEG +/- 5 DEG
Buick Regal, +.1 DEG +/- .2 DEG +/- 5 DEG Cutlass Supreme, Grand Prix, Monte Carlo, - w/manual strg. +.1 DEG +/- .2 DEG +/- 5 DEG
Chevette,T-1000 +.12 DEG +/- .16 DEG +/- 5 DEG
Fiero 0 +/- .2 DEG +/- 5 DEG Rear 0 +/- .2 DEG 0 +/- .15 DEG
Corvette 0 +/- .2 DEG +/- 1 DEG Rear 0 +/- .2 DEG 0 +/- .15 DEG
Front Wheel Drive (FWD)
Century, 0 +/- .2 DEG +/- 5 DEG Celebrity, Ciera, 6000
LeSabre, 0 +/-.2 DEG +/- 3 DEG Electra, Park Ave. Olds 88,98, Bonneville, Rear +.1 DEG +/-.2 DEG 0 +/- .1 DEG
Cad DeVille 0 +/- .2 DEG +/- 3 DEG
Rear +.1 DEG +/-.2 DEG 0 +/- .1 DEG
Riviera 0 +/- .2 DEG +/- 2.5 DEG Rear +.2 DEG +/- .2 DEG 0 +/- .15 DEG
Toronado 0 +/- .2 DEG +/- 2.5 DEG Rear +.2 DEG +/- .2 DEG 0 +/- .15 DEG
Eldorado,Seville 0 +/- .2 DEG +/- 2.5 DEG Rear +.2 DEG +/- .2 DEG 0 +/- .15 DEG
Firenza, Calais 0 +/- .2 DEG +/- 5 DEG Skyhawk, Somerset, Skylark,Cimarron Corsica,Berett,a Cavalier, J-2000 Grand AM
Cavalier Z-24, -.12 DEG +/- .2 DEG +/- 5 DEG J-2000 with 60 series tires
Allante 0 +/- .2 DEG +/- 2.5 DEG Rear +.2 DEG +/- .2 DEG 0 +/- .15 DEG
NOTES: All specifications, including toe are in degrees. all toe specifications are total (sum) toe with appropriate steering wheel or thrust angle requirements. (individual toe may be obtained by dividing total toe in half. Ex: .1 deg +/- .2 deg total toe = .05 deg +/- .1 deg indiviudal toe). Positive toe is toe in. Cross caster equals left caster minus right caster. Cross camber equals left camber minus right camber. Thrust angle is the angle between the path the rear wheels will take and the car's centerline.
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.
