SERVICE MANUAL UPDATE - SECTION 0B-9 AND3-28

SUBJECT: SECTION OB-9 MAINTENANCE AND LUBRICATION AND SECTION 3-28 STEERING, SUSPENSION, TIRES AND WHEELS DIAGNOSIS

VEHICLES AFFECTED: 1993 "B" MODEL

APPLICATION:

----------- 1993 "B" car specification changes for Chevrolet Caprice and Buick Roadmaster.

The Service Manual for Section OB-9 and Section 3-28 has been revised. These pages should be replaced in the current Service Manual.

MAINTENANCE ITEMS

Air Cleaner Filter 4.3L (VIN Z) ...................................... AC Type A1135C 5.0L (VIN E) ...................................... AC Type A1135C 5.7L (VIN 7) ...................................... AC Type A1135C Engine Oil Filter 4.3L (VIN Z) ...................................... AC Type PF51 5.0L (VIN E) ...................................... AC Type PF25 5.7L (VIN 7) ...................................... AC Type PF25 Fuel Filter 4.3L (VIN Z) ...................................... AC Type GF580 5.0L (VIN E) ...................................... AC Type GF580 5.7L (VIN 7) ...................................... AC Type GF580 PCV Valve 4.3L (VIN Z) ...................................... AC Type CV789C 5.0L (VIN E) ...................................... AC Type CV914C 5.7L (VIN 7) ...................................... AC Type CV914C Spark Plug Assemblies and Gap 5.0L (VIN E) (Except Police and Taxi) ............. AC.CR45TS 0.89 mm (0.035") Police and Taxi ................................... AC.CR43TS 0.89 mm (0.035") 5.7L (VIN 7) ...................................... AC.CR43TS 0.89 mm (0.035")

APPROXIMATE FLUID CAPACITIES

Air Conditioning R-12 .............................................. 1.4 kg (3.1 lb.) Engine Crankcase Without Filter Change ............................. 3.8 liters (4.0 qt.) With Filter Change ................................ 4.3 liters (4.5 qt.) Fuel Tank Sedan ............................................. 87.4 liters (23 gal.) Wagon ............................................. 83.3 liters (22 gal.) Transmission Automatic (HYDRA-MATIC 4L60) Drain & Refill .................................... 4.7 liters (10.0 pt.) Overhaul .......................................... 10.6 liters (22.4 pt.) Cooling System 4.3L (VIN Z) Without Heavv-Duty Radiator ....................... 11.9 liters (12.6 qt.) With Heavy-Duty Radiator .......................... 12.5 liters (13.2 qt.) 5.0L (VIN E) Including, Police and Taxi Without Heavy-Duty Radiator ....................... 15.8 liters (16.7 qt.) With Heavy-Duty Radiator .......................... 16.4 liters (17.3 qt.) 5.7L (VIN 7) Except Police Without Heavy-Duty Radiator ....................... 13.7 Liters (14.5 qt.) With Heavy-Duty Radiator .......................... 13.8 liters (14.6 qt.) 5.7L (VIN 7) Police With Heavy-Duty Radiator .......................... 14.3 liters (15.1 qt.)

The capacities shown here are approximate. Add fluid as necessary to bring to appropriate level.

WHEEL NUT TORQUE

Wheel Nuts ........................................ 140 N-m (100 lb. ft.)

REAR AXLE FILLER PLUG TORQUE

Filler Plug ....................................... 35 N-m (26 lb. ft.)

BELT TENSION SPECIFICATIONS

Engines equipped with serpentine belts have an automatic tensioner. No adjustment of this belt is necessary.

MAINTENANCE ITEMS

Air Cleaner Filter ............................... AC Type A135C Engine Oil Filter ................................ AC Type PF25 Fuel Filter ...................................... AC Type GF580 PCV Valve ........................................ AC Type CV914C Spark Plug Assembiles and Gap .................... AC.CR43TS 0.89 mm (0.035")

APPROXIMATE FLUID CAPACITIES

Air Conditioning R-12 ............................................. 1.4 kg (3.1 lb.) Engine Crankcase Without Filter Change ............................ 3.8 liters (4.0 qt.) With Filter Change ............................... 4.3 liters (4.5 qt.) Fuel Tank Sedan ............................................ 87.4 liters (23 gal.) Wagon ............................................ 83.3 liters (22 gal.) Transmission Automatic (HYDRA-MATIC 4L60) Drain & Refill ................................... 4.7 liters (10.0 pt.) Overhaul ......................................... 10.6 liters (22.4 pt.) Cooling System With-out Heavy-Duty Radiator ..................... 13.7 liters (14.5 qt.) With Heavy-Duty Radiator ......................... 13.8 liters (14.6 qt.)

The capacities shown here are approximate. Add fluid as necessary to bring to appropriate level.

WHEEL NUT TORQUE

Wheel Nuts ...................................... 140 N-m (100 lb. ft.)

REAR AXLE FILLER PLUG TORQUE

Filter Plug ..................................... 35 N-m (26 lb. ft.)

BELT TENSION SPECIFICATIONS

Engines equipped with serpentine belts have an automatic tensioner. No adjustment of this belt is necessary.

TIRE PRESSURE SPECIFICATIONS

Sedan Front ............................................. 205 kPa (30 psi) Rear .............................................. 205 kPa (30 psi) Compact Spare ..................................... 415 kPa (60 psi) Full-Size Spare ................................... 240 kPa (35 psi) Wagon Front ............................................. 205 kPa (30 psi) Rear .............................................. 240 kPa (35 psi) Compact Spare ..................................... 415 kPa (60 psi) Full-Size Spare ................................... 240 kPa (35 psi)

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.