INDEX The identification or usage charts are located in the catalog as listed below VIN Model Designation i Label Loca ions Engine Service Policy Group 0 000 Engine Stamping Intormation Group 0 000 Engine Identification Group 0 000 Engine and Transmission Usage Group 0 000 V Be1t Chart Group 1 066 Radiator Chart Group 1 219 Starter Motor Chart Group 2 041 Spark Plug Wire Chart Group 2 240 Tune Up C art Group 2 270 Generator Chart Group 2 275 Distributor Chart Group 2 361 Lamp Socket Chart Group 2 999 Fue Tank Meter Chart Group 3 107 Fuel Injection Pump Group 3 306 Throttle Body Chart Group 3 335 Air Cleaner Chart Group 3 402 Carburetor Chart Group 3 725 Electronic Control Module Chart Group 3 999 Transmission and Engine Usage Group 4 000 Transmission ID Trans to Asm Group 4 000 Transmission ID Asm to Trans Group 4 000 Speedometer Gear Chart A T Group 4 337 Transmission Chart Group 4 499 Brake Chart Group 4 500 Master Cylinder Chart Group 4 650 Power Booster Chart 4 Group 4 901 Axle Information Group 5 000 Steering Gear Chart Group 6 508 Steering Column Chart Group 6 518 Power Steering Pump Chart Group 6 605 Spring Charts Group 7 412 Adhesive Molding Usage Group 8 132 Heater Module Chart Group 8 845 Heater Blowers Group 8 857 Body Cushion Chart Group 9 023 Air Conditioning Module Group 9 169 Air Conditioning Compressors Group 9 170 Instrument Cluster C art Group 9 735 Trim Combinations Group 14 000 Paints Color By Family Group 14 000 Seat Belt Charts Group 14 875 Carpet Identification Group 15 512 SEO Special Equipment Options Group 15 999 T 1991 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17A L 5 91 3