7 7 P GROUP INDEX Engine 0 000 In Line 6 ltas V6 Gas VB Gas I Gllllcliiesel Clutch Cooling Grille 1 000 Oil System Electrical 2 000 MEDIUM DUTY l E Transmission 4 000 4 Speed 5 Speed TRUCK W Auxiliary It t Sdelllllrl llears PARTS BOOK Brakes Brakes 5 000 3 7 8 Wheel Brake Components Rear Axle I ilt I I5 CE CS5000 CD CE CG CM CS ME D dr r l ss sc sm ss rz rc meooo IIZ s co cs cm Me mm rs meson Fr Axle 6 cnzvnom cominrcrua wml cmlssrs seam mourn 9 Frame Springs 7 000 GMC CUMMEHCIHG WIIH CHASSIS SERIAL 555lI II Bumper REPRINTED IN ITS ENTIRETY illgzilrmelul 8 000 Replaces 78TM Printed in June 1979 Body Mounting 9 000 All charts and specifications contal ed th s catalog are based o the latest production information availahlle almtheltime ol publication aprlroval A comlmonmg General Motors Corporation reserves the right to make changes at any time Instruments without notice in colors materials equipment speclcatons and models and also to discontinue models II i wlmlsllleld l6 000 Interior Panels wnnziiousrruo a msrmsurion mvision P tl rm l7 000 OF GENERAL MOTORS CORPORATION Stake Rqgk TRUCK PARTS PUBLICATIONS DEPT emzvitte MlCI l 48111 N ll l l x mM Alphabetical Index Parts Publication 16M Printed in U S A September 1 2