Technical Service Bulletins
- 2006-01-27: Service VME - Use Correct Engine Oil Drain Plug - keywords drain engine leak oil pan plug replace (PIP3696)
- 2006-01-18: Info - New Product Feedback Form and Process for Automatic Transmission Core Returns (01-07-30-029A)
- 1995-10-10: WARRANTY INFORMATION ALL MODELS - ALL YEARS (58-05-03)
- 1995-10-09: INFO. ON DAYTIME RUNNING LAMPS (DRL) (53-82-09)
- 1995-06-12: INFO. ON REFORMULATED GASOLINE (RFG) (57-01-02)
- 1995-06-01: CAMPAIGN: SERVICE PART FUEL TANK SENDER RING WELDS (91-C-51)
- 1995-05-23: WARRANTY ADMINISTRATION WARRANTY INFORMATION (57-05-02)
- 1995-04-27: INFORMATION ON GM CAMPAIGN IDENTIFICATION LABEL (51-01-03)
- 1995-04-01: INFORMATION ON SIERRA-BRAND ENGINE COOLANT (43-62-01B)
- 1995-02-03: SMU - INFO. ON INSPECTION/ MAINTENANCE (I/M) EMISSIONS (51-65-02)
- 1994-09-15: DLR. PRODUCT CAMPAIGN BULLETIN NUMBERING SYSTEM (41-01-03)
- 1994-09-12: INFO. ON NEW PROM/MEMCAL IDENTIFICATION MARKINGS (44-65-01)
- 1994-09-08: CONTAMINATED A/C REFRIGERANT (INFORMATIONAL) (43-12-23)
- 1994-08-16: OBTAINING TECHNICAL ASSISTANCE (I/M 240 REPAIRS) (43-65-06)
- 1994-07-18: INFORMATION ON RELEASE OF SERVICE PKG. FOR NICKEL TAPE (14-93-01)
- 1994-05-13: WARRANTY ADMINISTRATION - EMISSION WARR. PARTS COVERAGE (47-05-01)
- 1994-03-29: ENHANCED INSPECTION MAINTENANCE PROGRAMS (43-65-05)
- 1994-02-01: INFORMATION ON AFTER MARKET ANTI-LOCK BRAKE SYS. PRODUCTS (43-50-01)
- 1993-12-22: RETROFITTING R-12 VEHICLES TO R-134A (INFORMATIONAL) (33-12-26)
- 1993-07-01: LEAKING CAST ALUMINUM WHEELS (REPAIR WITH ADHESIVE SEALANT) (93-U-57)
- 1993-03-16: ILLUSTRATED STEERING SYSTEM BLEED PROCEDURE (38-30-01A)
- 1993-03-01: DOOR LOCK CYLINDERS RECOMMENDED LUBRICATION (93-T-46)
- 1993-02-01: BLEEDING AIR FROM RACK AND PINION POWER STEERING SYSTEMS (2-93-59)
- 1993-01-27: INFO. ON FACTORS THAT AFFECT FUEL ECONOMY (30-65-02)
- 1992-12-01: ENG. MISS, HESITATION & ROUGH PIERCED SECONDARY IGNITION (93-6D-102)
- 1992-11-30: ALTERNATE REFRIGERANTS INFORMATION (93-1B-102)
- 1992-11-01: INDUSTRIAL FALLOUT-PAINT DAM. FINESSE TYPE REPAIRS (93-10-148)
- 1992-09-01: REPLACEMENT OF GLOVE BOX INFO. PAR EXCELLENCE PKG. MISSING (93-I-02)
- 1992-08-03: ALTERNATE REFRIGERANTS INFORMATION (92-T-124)
- 1992-01-24: TIRE COMPANY WARRANTY ASSISTANCE PROGRAM (92-I-08)
- 1991-06-13: RETAINING MEMORIES IN ELECT. DEVICES WITH BAT. DISCONNECTED (91-8-212)
- 1991-04-30: A/C REFRIGERANT LOSS DUE TO LOOSE/MISS. ACCESS FITTING CAP (91-1-123)
- 1991-02-15: NO START/VEHICLE BATTERY DEAD PARASITIC CURRENT DRAIN TEST (05-91-82)
- 1991-02-15: NO START/VEHICLE BATTERY DEAD PARASITIC CURRENT DRAIN TEST (91-8-172)
- 1990-12-31: BRAKE EFFECTIVENESS AFTER ROTOR REFINISHING (91-5-109)
- 1990-12-15: GRINDING OR GROWLING NOISE IN PARK ON INCLINE (90-74T60121)
- 1990-08-31: GLOVE COMPARTMENT LITERATURE (REPLACEMENTS AVAILABLE) (91-I-03)
- 1990-07-24: BRAKE EFFECTIVENESS CHANGE AFTER ROTOR & BRAKE PAD WORK (91-T-30)
- 1990-03-21: PARASITIC DRAIN ON BATTERY AMMETER CONNECTING PROCEDURE (40-08)
- 1990-03-21: PARASITIC DRAIN ON BATTERY AMMETER CONNECTING PROCEDURE (90-8-170)
- 1990-03-15: MANUAL UPDATE-SEC. 6E1/6E2/6E3 CODE 33,34,63,64 (NON-TURBOS) (90-T-91)
- 1990-03-15: MANUAL UPDATE-SEC. 6E1/6E2/6E3 CODE 33,34,63,64 (NON-TURBOS) (90-6-105)
- 1990-02-17: DRIVEABILITY WORKSHEET FOR DIAGNOSTIC PURPOSES (PROM) (90-I-22)
- 1989-10-09: RADIO TELEPHONE/MOBILE RADIO INSTALLATION GUIDELINES (90-I-10)
- 1989-10-09: RADIO TELEPHONE/MOBILE RADIO INSTALLATION GUIDELINES (90-8-114)
- 1989-10-06: TIRE COMPANY WARRANTY ASSISTANCE PROGRAMS (90-I-04)
- 1989-10-06: GLOVE COMPARTMENT LITERATURE (OLDSMOBILE ONLY) (90-I-08)
- 1989-08-10: CFC REDUCTION AND REFRIGERANT RECOVERY (RECYCLING PROGRAM) (90-T-11)
- 1989-08-10: CFC REDUCTION AND REFRIGERANT RECOVERY (RECYCLING PROGRAM) (89-1-126)
- 1989-08-02: NEW SPACER- PLATE INDENTIFICATION TAB-2004R (89-T-126)
- 1989-08-02: NEW SPACER- PLATE INDENTIFICATION TAB-2004R (89-7200-104)
- 1989-05-24: NEW PROCEDURE FOR REPLACEMENT OF FINAL DRIVE PINION (89-T-81)
- 1989-05-24: NEW PROCEDURE FOR REPLACEMENT OF FINAL DRIVE PINION (89-7-109)
- 1989-04-14: GOODWRENCH VEHICLE SECURITY SYSTEM LABOR OPERATIONS (89-I-18)
- 1989-02-03: THM 400/475 PRODUCT UPDATE BOOK (89-7400-104)
- 1989-01-31: POOR AM OR FM RADIO RECEPTION ANT. COAX. FEMALE TERM. REPAIR (89-T-53)
- 1989-01-31: POOR AM OR FM RADIO RECEPTION ANT. COAX. FEMALE TERM. REPAIR (89-8-137)
- 1988-08-08: ELECTROSTATIC DISCHARGE DAMAGE TO ECM (INFO. TO PREVENT) (88-8-168)
- 1988-02-29: ENG. MISS,HESITATION & ROUGH PIERCED SEC. IGN. COMPONENTS (88-6-106)
- 1988-01-25: ENG. STALL WHEN SHIFT TO REV. OR DRIVE AFTER RESTART (87-7125-103)
- 1987-11-16: TIRE WARRANTIES IRREGULAR/PREMATURE WEAR (88-T-15)
- 1987-11-16: TIRE WARRANTIES IRREGULAR/PREMATURE WEAR (88-3-104)
- 1987-10-19: INSTRUMENT CLUSTER EXCHANGE PROGRAM INFORMATION (88-8-106)
- 1987-09-21: REVISED END PLAYS FOR 1ST AND 2ND GEAR NOISE REDUCTION 2004R (87-T-47)
- 1987-09-21: REVISED END PLAYS FOR 1ST AND 2ND GEAR NOISE REDUCTION 2004R (87-7200-105)
- 1987-08-20: STEERING LEAD OR PULL DIAGNOSIS AND POSSIBLE REPAIR (87-3-132)
- 1987-06-03: TIRE COMPANY ASSISTANCE PROGRAM (88-I-12)
- 1987-04-07: METHOD OF VERIFYING ' GOOD ELECTRICAL SYSTEM GROUND ' (87-8-139)
- 1986-12-15: INSTRUMENT CLUSTER EXCHANGE PROGRAM INFORMATION (87-8-113)
- 1986-12-01: WARRANTY AND CAMPAIGN CLAIMS CATALYTIC CONVERTER REPAIR (83-I-25)
- 1986-10-20: USE OF UNLEADED GASOLINE IN VEHICLES USING LEADED GAS (87-6-100)
- 1986-09-24: REVISED:CHATTERING BLADES CLEAN BLADES/GLASS (84-2-140)
- 1986-09-23: USE OF UNLEADED GASOLINE VEHICLES USING LEADED GAS (87-0-104)
- 1986-09-22: DELCO FREEDOM BATTERY STORAGE AND TESTING (87-8-108)
- 1986-09-15: PAINT/CARE OF CAR FINISHES ALL VEHICLES AFFECTED (87-2-100)
- 1986-09-04: REMANUFACTURED GASOLINE AND DIESEL ENGINES (87-I-08)
- 1986-09-04: A/T OIL COOLER FLUSHING ALL THM A/T MODELS (87-T-01)
- 1986-09-04: A/T OIL COOLER FLUSHING ALL THM A/T MODELS (87-7-100)
- 1986-07-21: HEAD GASKETS COOLANT LEAKS DYE AND BLACK LIGHT TEST (86-638-119)
- 1986-07-05: CAMPAIGN: WHEEL CYLINDER ROTATION-DUAL BRAKE SYSTEM (6A16A)
- 1986-06-20: CLEAR COAT ON ALUMINUM WHEELS REPAIR PROCEDURE OUTLINED (86-T-45)
- 1986-06-20: CLEAN, PAINTING & COATING OF ALUMINUM WHEELS (85-T-18)
- 1986-06-20: CLEAN, PAINT & COATING OF ALUMINUM WHEELS (85-3-118)
- 1986-06-16: DIESEL ENGINE INADEQUATE COOL OVERHEATING (81-60-112)
- 1986-06-15: CAMPAIGN: WHEEL CYLINDER ROTATION-DUAL BRAKE SYSTEM (6A16)
- 1986-04-28: 3.8L V-6 GOODWRENCH ENGINE P/N'S AND MAJOR DIFFERENCES (86-T-26A)
- 1986-04-28: 3.8L V-6 GOODWRENCH ENGINE P/N'S AND MAJOR DIFFERENCES (86-638-109)
- 1986-02-26: CONTROL VALVE ASSEMBLY CLEANING/SERVICING - ALL A/T (86-T-23)
- 1986-02-26: CONTROL VALVE ASSEMBLY CLEANING/SERVICING - ALL A/T (86-7-103)
- 1986-01-23: AUTOMATIC TRANSMISSION IDENTIFICATION INFORMATION (86-T-17)
- 1986-01-23: AUTOMATIC TRANSMISSION IDENTIFICATION INFORMATION (86-7-102)
- 1985-12-23: WORK AREA & EQUIP. REQUIREMENT TO OVERHAUL TRANSMISSIONS (86-7-101)
- 1985-10-07: CRACKED PAINT USING RM HIGH SOLIDS RAPID FILTER (86-2-103)
- 1985-10-01: REMOVAL OF TIRE/WHEEL WEIGHT MARKER RESIDUE (86-I-18)
- 1985-10-01: REMOVAL OF TIRE/WHEEL WEIGHT MARKER RESIDUE (86-3-101)
- 1985-08-07: PAINT STRIPPING AND FINISH ANALYSIS AND CORRECTION (84-I-21)
- 1985-08-07: PAINT STRIPPING AND FINISH ANALYSIS AND CORRECTION (85-2-153)
- 1985-06-05: SEALER HOT MELT PATCH SEALS BODY CRACKS OR JOINTS (85-2-140)
- 1985-05-31: REMANUFACTURED DIESEL ENGINES APPLICATION AND P/N'S (85-I-21)
- 1985-04-09: TORQUE CONVERTER END PLAY NEW MEASUREMENT TOOL (85-T-24)
- 1985-04-09: TORQUE CONVERTER END PLAY NEW MEASUREMENT TOOL (85-7-138)
- 1985-03-18: SEAT BELT EXTENDER ACCESS AND AVAILABILITY (85-T-21)
- 1985-03-18: SEAT BELT EXTENDER ACCESS AND AVAILABILITY (85-2-147)
- 1985-02-28: EXCESSIVE ALCOHOL IN FUEL POOR DRIVEABILITY (85-T-17)
- 1985-02-27: DIESEL PLUGGED NOZZLES ADD DEXRON(TYPE 'R')II TO FUEL (83-T-26)
- 1985-02-27: DIESEL PLUGGED NOZZLES ADD DEXRON(TYPE 'R')II TO FUEL (85-6-163)
- 1985-02-15: TPS SETTINGS INFORMATION (84-6-269)
- 1985-01-12: USE OF SAE 5W-30 OIL ADVERTISEMENT INFORMATION (85-I-17)
- 1985-01-01: CAMPAIGN: CALIFORNIA DIESEL EMISSIONS- EGR VALVE (81-E-03)
- 1985-01-01: CAMPAIGN: TO CORRECT BRAKE BACKING PLATE CORROSION (5A09)
- 1984-11-18: DIESEL INJECTION PUMP-E.I.D. GOVERNOR WEIGHT RETAINER (84-I-29)
- 1984-11-18: DIESEL INJECTION PUMP-E.I.D. GOVERNOR WEIGHT RETAINER (84-6-267)
- 1984-11-12: A/C HOSE AND CLAMP HOSE LEAK REPAIR (85-T-11)
- 1984-11-12: A/C HOSE AND CLAMP HOSE LEAK REPAIR (85-1-108)
- 1984-10-11: CAMPAIGN: RESTRICTED EXHAUST PLUGGED CATALYTIC CONVERTER (82-E-3)
- 1984-09-17: CARBURETED FLOAT ADJ. TOOL ESSENTIAL NEW TOOL PACKAGE (85-T-8)
- 1984-09-17: CARBURETED FLOAT ADJ. TOOL ESSENTIAL NEW TOOL PACKAGE (85-6-114)
- 1984-08-13: EMERGENCY PARTS ORDERING PROCEDURE CLARIFICATION (86-I-06)
- 1984-08-06: LABOR TIME GUIDE REVISION GOODWRENCH 350 DIESEL ENG. (84-I-28)
- 1984-08-01: POOR ENG. PERF./NO START PLUGGED CAT. CONV.(REST.EXH.) (82-T-27)
- 1984-08-01: POOR ENG. PERF./NO START PLUGGED CAT. CONV.(REST.EXH.) (84-6-235)
- 1984-06-27: CARBURETOR VACUUM BREAK TEST PROCEDURE (84-T-24)
- 1984-06-27: CARBURETOR VACUUM BREAK TEST PROCEDURE (85-6-159)
- 1984-06-07: PAINTING FLEXIBLE PLASTIC PARTS-REPAIR PROCEDURE (84-T-14)
- 1984-05-01: NEW FLOAT LEVEL GAGE CARBURETOR INFORMATION (84-T-17)
- 1984-05-01: NEW FLOAT LEVEL GAGE CARBURETOR INFORMATION (84-6-242)
- 1984-04-14: NO REVERSE, FIRST GEAR ONLY OVERHAUL PROCEDURES OUTLINED (84-7-119)
- 1984-01-23: DUAL BED CATALYTIC CONVERTER UPDATE CHANGE PROCEDURE (83-I-24)
- 1984-01-23: DUAL BED CATALYTIC CONVERTER UPDATE CHANGE PROCEDURE (84-6-275)
- 1984-01-12: POWER ANTENNA RELAY REPLACE P/N'S AND INSTALLATION (84-T-4)
- 1984-01-12: POWER ANTENNA RELAY REPLACE P/N'S AND INSTALLATION (84-9-106)
- 1983-12-05: SEAT BELT EXTENDER ACCESS AND AVAILABILITY (84-I-13)
- 1983-10-18: 3.8L V6 GOODWRENCH REPLACEMENT ENGINES (84-I-14)
- 1983-10-18: 3.8L V6 GOODWRENCH REPLACEMENT ENGINES (84-6-115)
- 1983-07-15: DIESEL FUEL CONTAMINATION FUEL ADDITIVE INFORMATION (83-I-22)
- 1983-07-15: DIESEL FUEL CONTAMINATION FUEL ADDITIVE INFORMATION (83-6-206)
- 1983-06-16: INTAKE MANIFOLD GASKET CORROSION INFORMATION (80-T-22)
- 1983-06-16: DIESEL CRUISE CONTROL TRANSDUCER SERVICE CENTERS (81-I-15)
- 1983-06-16: DIESEL INJ. NOZZLES TEST PROCEDURE (81-I-17)
- 1983-06-16: DIESEL FUEL LINE HEATER KIT AVAILABILITY (81-I-18)
- 1983-06-16: DIESEL COLD WEATHER FUEL RECOMMENDATION (81-I-20)
- 1983-06-16: ENGINE ADJUST FOR ALTITUDE GAS ENGINES (81-T-10)
- 1983-06-16: HOT WEATHER CHUGGLE HOT SURGE 3.8L V6 (81-T-11)
- 1983-06-16: DIESEL ROUGH IDLE MIN-MAX GOV. REPAIR KIT (81-T-1)
- 1983-06-16: COLD DRIVABILITY HARD COLD ST. 17081192/81198 CARBS (81-T-2)
- 1983-06-16: A/C CONTROL LEVER EXCESSIVE OPERATING EFFORT (81-T-3)
- 1983-06-16: CYLINDER HEAD GASKET LEAK REPAIR PROCEDURES-DIESEL (81-T-5)
- 1983-06-16: CRUISE CONTROL TRANSDUCER DIAGNOSIS & CORRECTION (81-T-8)
- 1983-06-16: TRANSMISSION SUPPORT FIXTURE 125 TRANSMISSION (82-I-12)
- 1983-06-16: DIESEL INJECTION NOZZLE CLEANING INFORMATION (82-I-15)
- 1983-06-16: DIESEL COAST DOWN SHUDDER INFORMATION (82-T-07)
- 1983-06-16: HARSH ENGAGEMENT INTO REVERSE CHANGE INFO / 350 TRANS (82-T-22)
- 1983-06-16: ENGINE OIL RECOMMENDATIONS INFORMATION (83-I-12)
- 1983-06-16: WRINKLES, BLISTERS AND BUBBLES IN FABRIC ROOF COVER (83-T-1)
- 1983-06-16: CYLINDER HEAD GASKET LEAK REPAIR PROCEDURES-DIESEL (83-6-101)
- 1983-06-16: DIESEL OIL FILTER SPEC 3.8 PLUG:CORRECTION: OWNER MANUAL (81-00-105)
- 1983-06-16: DIESEL EXHAUST PRESS REGULATOR SERVICE MANUAL REVISION (81-00-113)
- 1983-06-16: A/C CONTROL LEVER EXCESSIVE OPERATING EFFORT (81-10-106)
- 1983-06-16: DELAYED MOVEMENT FROM DEFROST TO HEAT POSITION (81-10-109)
- 1983-06-16: BODY AND FRAME MOUNT TORQUE SPECIFICATIONS (81-10B-102)
- 1983-06-16: CHOKE HEATER RELAY LOCATION 1981 CUTLASS (81-120-104)
- 1983-06-16: TORQUE CONV. CLUTCH WIRING SCHEMATICS (81-120-106)
- 1983-06-16: POWER ANTENNA REMOVAL AND INSTALLATION CHANGE (81-150-111)
- 1983-06-16: 1980 REAR BRAKE ASSEMBLY FOUND ON 1981 MODELS (81-50-100)
- 1983-06-16: DIESEL COLD WEATHER FUEL RECOMMENDATION (81-60-115)
- 1983-06-16: DIESEL BASIC SERVICE ENGINE DOWEL PIN DELETION (81-60-117)
- 1983-06-16: 3.8L ENGINE DESIGN CHANGE HARMONIC BALL. TYPE (81-60-118)
- 1983-06-16: INTAKE MANIFOLD GASKET CORROSION INFORMATION (81-60-136)
- 1983-06-16: DIESEL ROUGH IDLE MIN-MAX GOV. REPAIR KIT (81-64-101)
- 1983-06-16: COLD DRIVABILITY HARD COLD ST. 17081192/81198 CARBS (81-64-107)
- 1983-06-16: PROPANE ENRICHMENT CARBURETOR ADJUSTMENT UPDATE (81-64-112)
- 1983-06-16: 1981 CARB REVISION CARB REPLACEMENT CALIF. ONLY (81-64-119)
- 1983-06-16: DIESEL FUEL LINE HEATER KIT AVAILABILITY (81-64-132)
- 1983-06-16: ENGINE SURGE ON HOT RESTART RADIATOR HOSE NEAR FUEL LINE (81-64-133)
- 1983-06-16: A/C MUFFLER HOSE REPLACEMENT SERVICE INFORMATION (82-1-114)
- 1983-06-16: GEAR SHIFT LEVER KNOB REPLACEMENT PROCEDURE (82-2-141)
- 1983-06-16: EATON DIESEL VRV INSTALLATION PROCEDURE (82-6-117)
- 1983-06-16: FUEL PUMP APPLICATION SPEC. PUMP TO AVOID VAPOR LOCK (82-6-118)
- 1983-06-16: REDUCING CRANKING TIME ON DIESELS (82-6-153)
- 1983-06-16: DIESEL INJECTION NOZZLE CLEANING INFORMATION (82-6-154)
- 1983-06-16: DIESEL COAST DOWN SHUDDER INFORMATION (82-7-137)
- 1983-06-16: HARSH ENGAGEMENT INTO REVERSE CHANGE INFO / 350 TRANS (82-7-188)
- 1983-06-16: EXCESSIVE OIL CONSUMPTION INTAKE MANIFOLD GASKET (83-6-112)
- 1983-06-16: ENGINE OIL RECOMMENDATIONS INFORMATION (83-6-121)
- 1983-06-16: WRINKLES, BLISTERS AND BUBBLES IN FABRIC ROOF COVER (83-2-113)
- 1983-06-16: PAINT INFORMATION AND AVAILABILITY OF COLORS (81-I-9)
- 1983-06-16: DRIVEABILITY/PINGING-CORRECT FIX FOR CHUGGLE,HOT SOAK,SURGE (81-T-11A)
- 1983-06-16: PAINT INFORMATION AND AVAILABILITY OF COLORS (81-150-100)
- 1983-06-06: REAR COMPARPMENT LID WEATHERSTRIP SEALER OOZE-OUT (83-T-14)
- 1983-05-31: CONTROL VALVE/OIL PUMP ROTOR & SLIDE-SERVICE SPECS.125/125C (83-T-17)
- 1983-05-27: GENERATOR BRACKET MOAN REPLACE BRACKET (83-T-12)
- 1983-05-27: GENERATOR BRACKET MOAN REPLACE BRACKET (83-6-187)
- 1983-05-09: GM-GOODWRENCH 350 REMANUFACTURED DIESEL ENGINES (83-I-20)
- 1983-04-08: SHEET METAL CORROSION INSTALLING 'ADD-ON' EQUIPMENT (83-I-14)
- 1983-04-08: SHEET METAL CORROSION INSTALLING 'ADD-ON' EQUIPMENT (83-2-117)
- 1983-03-18: THM TRANS OIL LEAKS USE TRACING POWDER/FIND LEAK (83-T-5)
- 1983-03-18: THM TRANS OIL LEAKS USE TRACING POWDER/FIND LEAK (83-7-120)
- 1983-02-08: VITON ACCELERATOR PUMPS USAGE SERVICE REPLACEMENT ONLY (83-T-10)
- 1982-11-17: REPAIR BODY SIDE MOLDINGS DAMAGE SCREW ADHESIVE RETAINED (82-T-9)
- 1982-11-17: REPAIR BODY SIDE MOLDINGS DAMAGE SCREW ADHESIVE RETAINED (82-2-180)
- 1981-09-01: 81 OLDS, ALTITUDE ADJUSTMENT PASSENGER CAR DIESEL ENGINE (81-T-7)
- 1981-03-01: CAMPAIGN: CUTLASS MODELS W/HEAVY DUTY STEEL WHEELS (81-C-6)
- 1981-02-01: CAMPAIGN: REAR LOWER CONTROL ARM BOLTS (81-C-8)
- 1980-11-01: CAMPAIGN: DIESEL ENGINE WATER-IN-FUEL DETECTOR SYSTEM (81-C-4)