TRIM HEIGHT DIAGNOSIS OMISSION FROM SHOP MANUAL

VEHICLES AFFECTED: 1986 Pontiac Sunbird

The following trim height information was omitted from the 1986 J-Car (Sunbird) service manual.

VEHICLE HEIGHTS

"Z" & "J" DIMENSIONS - Lift front bumper of vehicle up approximately 38.0. Gently remove hands and let vehicle settle. Repeat twice for a total of 3 times. Measure "Z" and "J" dimensions. Push front bumper down approximately 38.0. Gently repeat twice for a total of 3 times. Measure "Z" & "J" dimensions.

True heights are the average of the high & low measurements.

"D" & "K" DIMENSIONS - Lift rear bumper of vehicle up approximately 38.0. Gently remove hands and let vehicle settle on its own. Repeat twice for a total of 3 times. Measure "D" & "K" dimensions. Push rear bumper of vehicle down approximately 38.0. Gently remove hands and let vehicle rise on its own. Repeat twice for a total of 3 times. Measure "D" & "K" dimensions.

True heights are the average of the high & low measurements.

RECOMMENDED TIRE PRESSURE

Trim Height and Audit Check - Set pressure to agree with vehicle tire pressure sticker for loading "Up to Vehicle Capacity".

LOAD CONDITIONS

Shipping Weight - Vehicle is built to parts list specifications. Including coolant to capacity and 11.4 liters of gasoline.

Curb Weight - Vehicle is built to parts list specifications including coolant to capacity and full tank of gasoline.

TIRE SIZE MODEL SUSP. Z D J K --------- ----- ----- -- --- --- --- P175/80R13 27, 67, 69, 77 STD 34 174 243 244 P195/70R13 27, 67, 69, 77 STD 37 176 243 244 P215/60R14 27, 67, 69, 77 Y99 37 176 243 244 P175/80R13 35 STD 36 180 246 250 P195/70R13 35 STD 39 182 246 250 P215/60R14 27, 69, 77 Y93 32 172 243 244

27 - Coupe; 67 - Convertible; 69 - Sedan; 77 - Hatchback Dimensions given in mm.

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.