1986 C4 Service Bulletins

Service Bulletin Number: 86-17
Bulletin Sequence Number: 205
Date of Bulletin: 8512
NHTSA Item Number: 82606
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: EQUIPMENT:ELECTRIC POWER ACCESSORIES:WINDOWS
Summary: WINDOW REGULATORS-CONDITIONS IN PAST REQUIRED COMPLETE WINDOW REGULATOR REPLACEM ENTS NOW BE REPAIRED BY EITHER REPLACING COMPLETE REGULATOR OR SERVICING EXISTIN G REGULATOR WITH COMPONENT PARTS-PART NUMBERS AND PROCEDURES FOR REPLACEMENT OF ELECTRIC MOTOR AND PLASTIC FLEX RACK OF WINDOW REGULATOR ASSEMBLY-ALL 1984-1986 CHEVROLET CORVETTE MODELS

Service Bulletin Number: 86C02
Bulletin Sequence Number: 004
Date of Bulletin: 8602
NHTSA Item Number: 83667
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: COMMUNICATIONS:ANTI-THEFT ALARM
Summary: PRODUCT CAMPAIGN 86C02 VEHICLE ANTI THEFT SYSTEM (VATS)-NO-START OR LOSS OF FUEL DELIVERY ON START UP, AND LOSS OF ANTI-THEFT PROTECTION-MALFUNCTION IN VEHICLE ANTI-THEFT MODULE-A NEW MODULE BE INSTALLED, IN ADDITION, NEW KEYS FURNISHED WIT H EACH NEW MODULE-PART NUMBER 1227760 VEHICLE ANTI THEFT MODULE-ALL 1986 CHEVROL ET CORVETTE MODELS

Service Bulletin Number: 86-62
Bulletin Sequence Number: 025
Date of Bulletin: 8604
NHTSA Item Number: 84429
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: TIRES
Summary: UNEVEN WEAR-OUTER RIBS ON TIRES-TO ELIMINATE OR MINIMIZE UNEVEN TIRE WEAR CHECK ALIGNMENT ON A 4 WHEEL ALIGNMENT MACHINE AND RESET BOTH FRONT AND REAR SUM-TOE-T OE SPECIFICATION CHANGED FEBRUARY 21, 1986 FOR FACTORY SETTING DEVICE-ALL 1984-1 986 CHEVROLET CORVETTE MODELS

Service Bulletin Number: 86C05
Bulletin Sequence Number: 038
Date of Bulletin: 8605
NHTSA Item Number: 85006
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: LIGHTING:SWITCH:BUTTON:RING:HEAD LIGHTS
Summary: PRODUCT SAFETY CAMPAIGN 86C05 PUSH-PULL HEADLIGHT SWITCH REPLACEMENT-INTERMITTEN T HEADLIGHT CIRCUIT COULD CAUSE SUDDEN LOSS OF HEADLIGHTS-ALL 1986 CHEVROLET CEL EBRITY, CAMERO, MONTE CARLO, CAVALIER, CHEVETTE, AND CORVETTE MODELS

Service Bulletin Number: 86-82
Bulletin Sequence Number: 043
Date of Bulletin: 8605
NHTSA Item Number: 85011
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ELECTRICAL SYSTEM:IGNITION:OTHER PART
Summary: SPARK PLUG SERVICE ON ENGINES WITH ALUMINUM HEADS-REMOVING SPARK PLUGS FROM 5.7L PFI ENGINES WITH ALUMINUM HEADS FOR INSPECTION, SERVICING OR REPLACEMENT-CRUSHA BLE DESIGN GASKET, P/N 5612328, MUST BE REPLACED EACH TIME SPARK PLUG REMOVED-CO RRECT SPARK PLUG TORQUE IS 18-22 FT. LBS. (25-30 NM).-ALL 1986 CHEVROLET CORVETT E 5.7L PFI L98 (VIN CODE 8) ENGINE

Service Bulletin Number: 86-117
Bulletin Sequence Number: 076
Date of Bulletin: 8607
NHTSA Item Number: 86069
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: EQUIPMENT:ELECTRIC POWER ACCESSORIES:SEATS
Summary: POWER SEAT ADJUSTER-EXCESSIVE MOVEMENT-REPAIRED BY REPLACING SEAT ADJUSTER TRANS MISSION ASSEMBLY, P/N 10065222-ALL 1984-1986 CHEVROLET CORVETTE MODELS

Service Bulletin Number: 86-126
Bulletin Sequence Number: 083
Date of Bulletin: 8607
NHTSA Item Number: 86075
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: FUEL:CARBURETOR:UNKNOWN TYPE:MANIFOLD:INTAKE
Summary: SERVICE ENGINE SOON "FALSE CODE 32"-MOST CODE 32 CORRECTED BY USING DIAGNOSTIC C HART IN 1986 SHOP MANUAL (PAGE 6E3-A-49)-IF NOT CORRECTED INSPECT RIGHT HAND INT AKE MANIFOLD GASKET-IF GASKET MISSING METAL INSERT, A GASKET WITH METAL INSERT T O BE INSTALLED-ALL 1986 CHEVROLET CORVETTE MODELS WITH CAST IORN CYLINDER HEADS (VIN CODE 8)

Service Bulletin Number: 86-152
Bulletin Sequence Number: 110
Date of Bulletin: 8609
NHTSA Item Number: 86552
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: FUEL:FUEL SYSTEM OTHER PARTS
Summary: SERVICE ENGINE SOON LIGHT CODE "33" MAF SENSOR VOLTAGE HIGH-PERFORM DIAGNOSTIC C HECK FOR CODE 33 FOUND IN 1986 SHOP MANUAL-CHANGE MAF POWER RELAY-MAF POWER RELA Y NEW P/N IS 10067925-ALL 1986 CHEVROLET CAMERO MODELS WITH LB9 ENGINE (ENG. COD E F), AND 1986 CORVETTE WITH L98 ENGINE (ENG. CODE 8)

Service Bulletin Number: 86C05A
Bulletin Sequence Number: 115
Date of Bulletin: 8609
NHTSA Item Number: 87285
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: LIGHTING:SWITCH:BUTTON:RING:HEAD LIGHTS
Summary: PRODUCT SAFETY CAMPAIGN 86C05(A)-86V131-PUSH-PULL HEADLIGHT SWITCH REPLACEMENT-S WITCH MANUFACTURED ELECTRICAL CONTACTS WHICH COULD RESULT IN INTERMITTENT HEADLI GHT CIRCUIT-HEADLIGHTS COULD GO OUT SUDDENLY-SERVICE TO INSPECT/REPLACE HEADLIGH T SWITCH-1986 CHEVROLET CELEBRITY, CAMRO, MONTE CARLO, CAVALIER (EXCEPT JE/JF SE RIES), CHEVETTE, CORVETTE VEHICLES

Service Bulletin Number: 86C11
Bulletin Sequence Number: 116
Date of Bulletin: 8609
NHTSA Item Number: 87286
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: POWER TRAIN:TRANSMISSION:STANDARD:MANUAL
Summary: PRODUCT CAMPAIGN 86C11-MANUAL TRANSMISSION OVERDRIVE SWITCH IMPROPERLY WIRED-SWI TCH WILL NOT ALLOW TRANSMISSION TO AUTOMATICALLY BE IN OVERDRIVE UPON RESTART AS WAS INTENDED-SERVICE TO INSTALL NEW OVERDRIVE SWITCH (P/N 14087693)-1986 CHEVRO LET CORVETTEWITH RPO MK2 MANUAL TRANSMISSION

Service Bulletin Number: 86C12
Bulletin Sequence Number: 117
Date of Bulletin: 8609
NHTSA Item Number: 87287
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: BRAKES:HYDRAULIC:ANTI-SKID SYSTEM
Summary: PRODUCT SAFETY CAMPAIGN 86C12 (86V120) : ANT-SKID BRAKE SYSTEM MASTER CYLINDER C ENTER VALVE-SEVERE AND UNUSUAL BRAKING CONDITIONS CAUSE DAMAGE TO CENTER VALVE-R ESULT IN LOSS OF FRONT BRAKESWITH INCREASED PEDAL TRAVEL AND REDUCED BRAKING ABI LITY-SERVICETO INSTALL MASTER CYLINDER PISTON KIT (P/N 10052271)-1986 CHEVROLET CORVETTE MODELS

Service Bulletin Number: 86-176
Bulletin Sequence Number: 136
Date of Bulletin: 8610
NHTSA Item Number: 87306
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: VISUAL SYSTEMS:MIRRORS:REARVIEW:EXTERIOR
Summary: ELECTRIC OUTSIDE REAR VIEW MIRRORS-INOPERATIVE MIRRORS DIAGNOSED AS INOPERATIVE MOTORS REPAIRED WITH NEW REPAIR KITS-HEATED, NON-HEATED-ALL 1984-1986 CHEVROLET CORVETTE MODELS

Service Bulletin Number: 87-11
Bulletin Sequence Number: 145
Date of Bulletin: 8610
NHTSA Item Number: 87315
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ENGINE COOLING SYSTEM:OTHER PARTS
Summary: LOW COOLANT WARNING LIGHT-LIGHT COMING ON-INSUFFICIENT CLAMPING OF RECOVERY HOSE BETWEEN RADIATOR AND RECOVERY BOTTLE-INSTALL NEW LOW COOLANT SENSOR PROBE-PART NUMBER 10054615 SENSOR PROBE, 22527587 CLAMP-ALL 1986-1987 CHEVROLET CORVETTE MO DELS

Service Bulletin Number: 86-162
Bulletin Sequence Number: 152
Date of Bulletin: 8610
NHTSA Item Number: 88169
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ELECTRICAL SYSTEM:IGNITION:ELECTRONIC CONTROL UNIT
Summary: ENGINE CALIBRATION CHANGE: TO IMPROVE DRIVEABILITY AND ELI NATE FALSE SERVICE E NGINE SOON LIGHTS-NEW SERVICE CALIBRATORS RELEASED FOR 1986 5.7L TPI ENGINE CALI BRATORS ADDRESS-ROUGH IDLE ON BOTH HOT AND COLD ENGINE-CHUGGLE OR SHUDDER AT L OW SPEEDS-SURGE AT ROAD LOAD-ENGINE OVERSPEED-HESITATION ON ACCELERATION-SERVICE ENGINE SOON LIGHTS-1986 CORVETTE ALL

Service Bulletin Number: 87-86
Bulletin Sequence Number: 025
Date of Bulletin: 8703
NHTSA Item Number: 89405
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: EQUIPMENT:ELECTRIC POWER ACCESSORIES:WINDOWS
Summary: POWER SEAT TRANSMISSION USAGE AND IDENTIFICATION-DUE TO A COMPONENT CHANGE WITHI N POWER SEAT TRANSMISSIONS FOR 1984-1987 MODELS, (2) TRANSMISSION ASSEMBLIES AND CARRIAGES NOW AVAILABLE FOR SERVICE-CHART FOR PROPER PARTS USAGE: TRANS ASSEMBL Y P/N 1006522, 10081946, CARRIAGE P/N 14067602, 10081947-ALL 1984-1987 CHEVROLET CORVETT MODELS

Service Bulletin Number: 86-162REIS
Bulletin Sequence Number: 038
Date of Bulletin: 8705
NHTSA Item Number: 90906
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ELECTRICAL SYSTEM:IGNITION:ELECTRONIC CONTROL UNIT
Summary: ENGINE CALIBRATION CHANGE: TO IMPROVE DRIVEABILITY AND ELIMINATE FALSE "SERVICE ENGINE SOON"LIGHTS-REISSUED TO PROVIDE A REVISED CALIBRATOR FOR USE ON 1986 CORV ETT. ITH ALIMINUM HEADS AND MANUAL TRANSMISSION-86-162 DESTROYED-NEW SERVICE CA LIBRATORS RELEASED FOR 1986 5.7L TPI ENGINE-CALIBRATORS WILL ADDRESS: "ROUGH IDL E"/"CHUGGLE OR SHUDDER"/ "SURGE"/"ENGINE OVERSPEED"/ "HESITATION"/"SERVICE ENGIN E SOON" LIGHTS-ELIMINATES: IF ENGINE DIAGNOSTICS AND REPAIR NOT CORRECT REPLACE CALIBRATOR IN ECM-ALL 1986 CHEVROLET CORVETTE MODELS

Service Bulletin Number: 86-226
Bulletin Sequence Number: 040
Date of Bulletin: 8703
NHTSA Item Number: 90908
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: FUEL:FUEL INJECTION:UNKNOWN TYPE:INJECTOR
Summary: FUEL INJECTOR PLUGGING-IN RESPONE TO REQUEST FOR HIGH-DETERGENT FUELS, ALL GASOL INE MARKETERS NOW PROVIDE FUEL WHICH PREVENT INJECTOR PLUGGING-IN ADDITION GENER AL MOTORS RELEASED FUEL INJECTORS WITH INCREASED RESISTANCE TO PLUGGING-TO CORRE CT: CLEAN INJECTORS, USING TOOL J-35800-RECOMMEND USE OF HIGH-DETERGENT FUEL-IMP ROVED SERVICE INJECTORS-ALL 1985-86 CHEVROLET CAMARO WITH PFI ENGINES (VIN CODE F) AND 1985-86 CORVETTE WITH PFI ENGINES (VIN CODE 8)

Service Bulletin Number: 86-234
Bulletin Sequence Number: 043
Date of Bulletin: 8704
NHTSA Item Number: 90911
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: FUEL:FUEL INJECTION:UNKNOWN TYPE:ACCUMULATOR
Summary: FUEL RETURN PIPE RATTLE/KNOCK-HAMMERING/KNOCKING TYPE NOISE-CAUSED BY PRESSURE P ULSATINGS IN FUEL SYSTEM GENERATED BY FUEL INJECTOR OPERATION-REPAIRED BY INSTAL LATION OF A FILTER-ACCUMULATOR ASSEMBLY IN FUEL RETURN SYSTEM-SERVICE KITS CONTA INING PARTS AVAILABLE FROM GMSPO-SERVICE KIT P/N-COUPE 10068791-CONVERTIBLE 1006 8797-ALL 1985-86 CHEVROLET CORVETTE MODELS

Service Bulletin Number: 86-237
Bulletin Sequence Number: 045
Date of Bulletin: 8704
NHTSA Item Number: 90913
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: STEERING:POWER ASSIST
Summary: POWER STEERING FLUID COOLER-A SERVICE KIT, P/N 10080769 DEVELOPED FOR INSTALLING A POWER STEERING COOLER ON 1984-86-KITS AVAILABLE FROM GMSPO AND INCLUDE COOLER , ALL MOUNTING/PLUMBING COMPONENTS REQUIRED-ALL 1984-86 CHEVROLET CORVETTE MODEL S

Service Bulletin Number: 87-99
Bulletin Sequence Number: 050
Date of Bulletin: 8704
NHTSA Item Number: 90918
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: FUEL:FUEL EMISSION CONTROL
Summary: SERVICE ENGINE SOON LIGHT-CODE 36 (MAF SENSOR BURN-OFF FAULT)-PUGGED CRANKCASE V ENT TUBE OR FAULTY MAF POWER OR BURN OFF RELAYS-TEST RELAY-REPLACE THE RELAY-ALL 1986-87 CHEVROLET CAMARO/CORVETTE MODELS WITH PFI ENGINES (VIN CODES F AND 8)

Service Bulletin Number: 87-100
Bulletin Sequence Number: 051
Date of Bulletin: 8704
NHTSA Item Number: 90919
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: FUEL:FUEL INJECTION:UNKNOWN TYPE
Summary: THROTTLE BODY CARBON BUILDUP-1985-87 VEHICLES EXPERIENCE: CODE 34 ON RESTART/HIG H IDLE SPEED/HIGH ACCELERATOR PEDAL EFFORT/ENGINE STALLS AT IDLE OR DURING DECEL ERATION/ROUGH-LOW IDLES-CLEAN THROTTLE-CHECK MINIMUM IDLE SPEED AND READJUST SPE ED AND TPS AS SPECIFIED-ALL 1985-87 CHEVROLET CAMARO/CORVETTE MODELS WITH 5.0L O R 5.7L PFI ENGINE (VIN CODES F AND 8)

Service Bulletin Number: 87-116
Bulletin Sequence Number: 063
Date of Bulletin: 8704
NHTSA Item Number: 90930
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: STRUCTURE:DOOR ASSEMBLY:FRAME AND PANEL
Summary: LOOSE CORVETTE DOOR TRIM PANEL-DOOR TRIM PADS LOOSE FROM DOOR INNER PANEL AT REA R UPPER EDGE OF DOOR-REPAIRED BY ADDING A RETAINER TO DOOR TRIM PANEL-RETAINER, P/N 10082828-9-ALL 1984-87 CHEVROLET CORVETTE MODELS

Service Bulletin Number: 87-122
Bulletin Sequence Number: 068
Date of Bulletin: 8705
NHTSA Item Number: 90936
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: STRUCTURE:BODY ROOF:CONVERTIBLE TOP
Summary: FOLDING TOP-STORAGE LID PAINT PROTECTIVE OVERLAY-OVERLAY P/N 10051875 ELIMINATED FROM PRODUCTION ON 1987 VEHICLES-OVERLAY REMOVED BY USING A HEAT GUN AND 3-M, P /N 08984, GENERAL PURPOSE ADHESIVE REMOVER-ALL 1986-87 CHEVROLET CORVETTE CONVER TIBLE MODELS

Service Bulletin Number: 87-148
Bulletin Sequence Number: 081
Date of Bulletin: 8705
NHTSA Item Number: 90948
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: STRUCTURE:BODY ROOF:CONVERTIBLE TOP
Summary: CONVERTIBLE TOP NUMBER 5 BOW WEATHERSTRIP-NUMBER 5 BOW WEATHERSTRIP PULLS LOOSE FROM BOW AT FROND ENDS-REPAIRS ACCOMPLISHED BY GLUING WEATHERSTRIP ENDS DOWN WIT H 3M WEATHERSTRIP ADHESIVE, P/N 08011, OR P/N 12345096-7 WEATHERSTRIP ADHESIVE-I F WEATHERSTRIP DAMAGED, IT WILL HAVE TO BE REPLACED-ALL 1986-87 CHEVROLET CORVET TE CONVERTIBLE MODELS

Service Bulletin Number: 87-114
Bulletin Sequence Number: 090
Date of Bulletin: 8704
NHTSA Item Number: 91410
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: POWER TRAIN:CLUTCH ASSEMBLY:OTHER PARTS
Summary: CLUTCH MASTER CYLINDER PUSH ROD BUSHING-INADEQUATE RETENTION OF CLUTCH MASTER CY LINDER PUSH ROD ATTACHMENT-REMOVE PLASTIC BUSHING AND REPLACE WITH SERVICE PARTS -BUSHING PART NUMBER 14080233, FLAT WASHER 120395, RETAINER 148149-ALL 1986-87 C HEVROLET CORVETTE WITH MANUAL TRANSMISSION

Service Bulletin Number: 87-140
Bulletin Sequence Number: 100
Date of Bulletin: 8705
NHTSA Item Number: 91757
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT
Summary: INTERMITTENT NO-START CONDITION CAUSED BY THE VEHICLE ANTI-THEFT SYSTEM (VATS)-C AUSED BY A DAMAGED IGNITION LOCK CYLINDER OR DAMAGED RESISTOR PELLET INSIDE IGNI TION KEY-AN IMPROVED IGNITION LOCK CYLINDER WITH A NARROWER KEYWAY AND AN IMPROV ED LONGER IGNITION KEY NOW AVAILABLE FROM GMSPO TO REPAIR CONDITION-LOCK CYLINDE R P/N 26008775-ALL 1986-1987 CHEVROLET CORVETTE MODELS

Service Bulletin Number: 87-148
Bulletin Sequence Number: 104
Date of Bulletin: 8705
NHTSA Item Number: 91761
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: STRUCTURE:BODY ROOF:CONVERTIBLE TOP
Summary: CONVERTIBLE TOP NUMBER 5 BOW WEATHERSTRIP-NUMBER 5 BOW WEATHERSTRIP PULLS LOOSE FROM BOW AT FRONT ENDS-FIELD REPAIRS ACCOMPLISHED BY GLUING WEATHERSTRIP ENDS DO WN WITH 3M WEATHERSTRIP ADHESIVE, P/N 08011, OR P/N 12345096-7 WEATHERSTRIP ADHE SIVE-ALSO BE SURE PLASTIC NAILS INSTALLED PROPERLY-IF WEATHERSTRIP DAMAGED IT WI LL HAVE TO BE REPLACED-ALL 1986-1987 CHEVROLET CORVETTE CONVERTIBLE MODELS

Service Bulletin Number: 86-202
Bulletin Sequence Number: 184
Date of Bulletin: 8612
NHTSA Item Number: 92411
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: STRUCTURE:BODY ROOF:CONVERTIBLE TOP
Summary: FOLDING TOP REAR BOW LATCH INOPERATIVE-DUE TO A BROKEN SPRING ON LATCH ASSEMBLY- REPAIR KIT, P/N 10070300 AVAILABLE THROUGH GMSPO TO REPLACE BROKEN SPRING AND PI VOT PIN-ALL 1986 CHEVROLET CORVETTE CONVERTIBLES

Service Bulletin Number: 87-58
Bulletin Sequence Number: 127
Date of Bulletin: 8701
NHTSA Item Number: 92436
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: STRUCTURE:BODY ROOF
Summary: TRANSPARENT REMOVABLE ROOF PANEL BREAKAGE-DUE TO GLASS BINDING IN PLASTIC COVER DURING REMOVAL FROM STORAGE-WHEN INSTALLING NEW TRANSPARENT REMOVABLE ROOF REPLA CE OLD PLASTIC STORAGE COVERS WITH NEW COVERS: P/N 10074267-8 (FOR 1984-87)-ON 1 984 MODELS, NEW BRACKETS MUST ALSO BE INSTALLED-NEW BRACKET P/N'S 14089659-60-AL L 1984-87 CHEVROLET CORVETTE MODELS.

Service Bulletin Number: 88-38
Bulletin Sequence Number: 168
Date of Bulletin: 8708
NHTSA Item Number: 94241
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: BRAKES:HYDRAULIC:ANTI-SKID SYSTEM
Summary: ANTI-CORROSSION COATING OF ABS WHEEL SPEED SENSORS-WHEN INSTALLING NEW OR USED W HEEL SPEED SENSOR CYLINDRICAL SURFACE AND MOUNTING PLATE OF SENSOR THAT CONTACT ALUMINUM KNUCLE MUST BE COATED WITH ANTI-CORROSION SEALER P/N 12345106-ALL 1986 TO 1987 CHEVROLET CORVETTE MODELS

Service Bulletin Number: 88-43
Bulletin Sequence Number: 190
Date of Bulletin: 8709
NHTSA Item Number: 96859
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ENGINE COOLING SYSTEM:OTHER PARTS
Summary: LOW COOLANT WARNING LIGHT-ADDITIONAL PROCEDURES REGARDING THERMAL CYCLING PROVID ED-CHECK FOR BROKEN OR LOOSE WIRES OR FAULTY LOW COOLANT MODULE-ALL 1986 TO 1988 CHEVROLET CORVETTES MODELS

Service Bulletin Number: 87-206
Bulletin Sequence Number: 174
Date of Bulletin: 8709
NHTSA Item Number: 96875
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: AIR CONDITIONER
Summary: MOAN OR VIBRATION WITH AIR CONDITIONING RUNNING-IMPROVED BY INSTALLATION OF POWE R STEERING PUMP REAR BRACKET AND BRACE KIT P/N 10077573-ALL 1985 TO 1987 CHEVROL ET CORVETTE MODELS

Service Bulletin Number: 87-263-10
Bulletin Sequence Number: 024
Date of Bulletin: 8801
NHTSA Item Number: 98246
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: STRUCTURE:BODY
Summary: FRONT CENTER AIR DEFLECTOR DAMAGE-BY BUMPS CURBS AND SNOW PILES TWO NEW BRACES-I NSTALL SERVICE KITS P/N 10107825/10107824-ALL 1984 TO 1987 CHEVROLET CORVETTE MO DELS

Service Bulletin Number: 87-268-10
Bulletin Sequence Number: 029
Date of Bulletin: 8801
NHTSA Item Number: 98251
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: STRUCTURE:DOOR ASSEMBLY:ATTACHMENT:WINDOW
Summary: WINDOW REGULATOR REPLACEMENT-REPLACED WITH CONVERTIBLE TYPE WINDOW REGULATOR-P/N 22063224/22063225-ALL 1984 TO 1987 CHEVROLET CORVETTE MODELS

Service Bulletin Number: 87-270-6E
Bulletin Sequence Number: 031
Date of Bulletin: 8801
NHTSA Item Number: 98253
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ELECTRICAL SYSTEM:IGNITION:ELECTRONIC CONTROL UNIT
Summary: MASS AIR FLOW (MAF) SENSOR SYSTEM DIAGNOSIS CODES 33/34 AND 36-MAF POWER RELAY S HOULD BE P/N 10067925-IF NOT REPLACED WITH P/N 10067925-ALL 1986 TO 1987 CHEVROL ET CAMARO AND CORVETTE MODELS WITH 5.0L OR 5.7L PFI ENGINES

Service Bulletin Number: 87-298-6E
Bulletin Sequence Number: 129
Date of Bulletin: 8809
NHTSA Item Number: SB002811
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ELECTRICAL SYSTEM:IGNITION:ELECTRONIC CONTROL UNIT
Summary: CODE 33 MASS AIR FLOW (MAF)SENSOR VOLTAGE HIGH DIAGNOSIS-CONDITION WHEREBY MAF S ENSOR CIRCUIT CAN NOT ACCOMPLISH CAUSED IN-OPEN OR INTERMITTENT IN CIRCUIT 998-S HORT TO GROUND IN CIRCUIT 900 FAULTY OR INCORRECT BURNOFF RELAY-CONNECTIONS SHOU LD BEINSPECTED FOR CORROSION AND/OR BENT PINS-ALL 1986/1987 CHEVROLET CAMARO AND CORVETTE MODELS WITH 5.0L OR 5.7L (VIN F, 8) ENGINE TLH

Service Bulletin Number: 88-43-6BREI
Bulletin Sequence Number: 130
Date of Bulletin: 8809
NHTSA Item Number: SB002812
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ENGINE COOLING SYSTEM
Summary: LOW COOLANT WARNING LIGHT CAUSED BY AIR TRAPPED IN COOLING SYSTEM-COOLANT LIGHT MODULE SHOULD CHECKED FOR PROPER FUNCTION-IF LIGHT DOES NOT GO OUT, CHECK FOR BR OKEN OR LOOSE WIRES-NECESSARY TO REPLACE LOW COOLANT SENSOR PROBE AND HOSE CLAMP S ON COOLANT RECOVERY HOSE-P/N 10054615 LOW COOLANT SENSOR PROBE AND 22527587 HO SE CLAMP-ALL 1986/1988 CHEVROLET CORVETTE MODELS TLH

Service Bulletin Number: 88-292-8A
Bulletin Sequence Number: 151
Date of Bulletin: 8807
NHTSA Item Number: SB003543
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ELECTRICAL SYSTEM:IGNITION
Summary: INTERMITTENT NO START CONDITION CAUSED BY THE VEHICLE ANTI-THEFT SYSTEM (VATS)-T HIS CONDITION CAUSED BY DAMAGED IGNITION LOCK CYLINDER-CAUSES OPEN CIRCUIT AT PE LLET, WHICH SHUTS THE SYSTEM DOWN FOR 4 MINUTES-IF CONTACTS ARE DAMAGED, REPLACE IGNITION LOCK CYLINDER WITH NEW REPLACEMENT LOCK CYLINDER, P/N 26009609-ALL 198 6 TO 1988 CHEVROLET CORVETTE MODELS TLH

Service Bulletin Number: 89-262-5
Bulletin Sequence Number: 078
Date of Bulletin: 8909
NHTSA Item Number: SB009372
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: SUSPENSION:INDEPENDENT FRONT CONTROL ARM:UNKNOWN TYPE
Summary: LIGHT BRAKE DRAG-BRAKE SWITCH ADJUSTMENT-THESE CONDITIONS MORE NOTICEABLE ON VEH ICLES WHICH HAVE ANTI LOCK BRAKE SYSTEM-THIS CAUSED BY IMPROPER BRAKE SWITCH ADJ USTMENT, SWITCH MAY PUSH ON BRAKE PEDAL & CAUSE BRAKE TO REMAIN PARTIALLY APPLIE D-PERFORM FUNCTIONAL BRAKE SWITCH ADJUSTMENT CHECK-ALL 1980 TO 1989 CHEVROLET A/ B/F/G/J/L/X AND Y MODEL CARS DG

Service Bulletin Number: 90-92-10
Bulletin Sequence Number: 090
Date of Bulletin: 8911
NHTSA Item Number: SB010926
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: INTERIOR SYSTEMS
Summary: LOOSE CARPET ON SIDE WALL TRIM PADS-CARPETS INSERTS ATTACHED TO SIDE WALL, DOOR, QUARTER & TAILGATE TRIM PANELS WHICH HAVE BECOME LOOSE MAY BE REATTACHED WITH 3M GENERAL TRIM ADHESHIVE #08080-ALL 1980-90 CHEVROLET A,B,F,J,L,W,X & Y CARS GM

Service Bulletin Number: 86C26
Bulletin Sequence Number: 016
Date of Bulletin: 9004
NHTSA Item Number: SB013521
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: FUEL:FUEL TANK ASSEMBLY:TANK
Summary: PRODUCT CAMPAIGN 86C26 FUEL TANK PRESSURE CONTROL VALVE-GM DETERMINED CERTAIN 19 86 CORVETTES W/5.7L ENGINES (CALIFORNIA ONLY) MAY EXPERIENCE INOPERATIVE FUEL TA NK PRESSURE CONTROL VALVE (P/N 17087240) ON ALL INVOLVED VEHICLES WILL BE REPLAC ED-ALL CHEVROLET SERVICE MANAGERS CE

Service Bulletin Number: 90-154-10
Bulletin Sequence Number: 052
Date of Bulletin: 9002
NHTSA Item Number: SB013863
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: INTERIOR SYSTEMS:SEATS
Summary: CUSHION RETAINING WIRE SERVICE PART-NEW REPLACEMENT PART AVAILABLE-84-90 CHEVY C ORVETTE RC

Service Bulletin Number: 90-162-7A
Bulletin Sequence Number: 059
Date of Bulletin: 9002
NHTSA Item Number: SB013870
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: SUSPENSION:SINGLE AXLE:REAR
Summary: REMOVE REAR CASE BUSHING OR REAR EXTENSION BUSHING-NEW ON-VEHICLE SERVICE PROCED URE-76-90 CHEVY B, F, G, Y CARS RC

Service Bulletin Number: 91-14-8A
Bulletin Sequence Number: 064
Date of Bulletin: 9004
NHTSA Item Number: SB013875
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ELECTRICAL SYSTEM:BATTERY
Summary: PARASITC DRAIN ON BATTERY-VEH MAY EXHIBIT FAILURE MODE OF A CONTROL MODULE DUE T O HIGH PARASITC CURRENT DRAIN-DIAGNOSTICS-ALL 1982-91 CHEVY RC

Service Bulletin Number: 90-187-6
Bulletin Sequence Number: 072
Date of Bulletin: 9003
NHTSA Item Number: SB013883
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ENGINE
Summary: PROPER INSTALLATION OF 75MM OIL FILTER-ALL 80-89 CHEVY MODELS RC

Service Bulletin Number: 90-246-6A
Bulletin Sequence Number: 091
Date of Bulletin: 9005
NHTSA Item Number: SB013902
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ENGINE
Summary: INFOR ON NEW DESIGN CYLINDER HEADS-86-90 CHEVY CAPRICE, CAMARO, CORVETTE RC

Service Bulletin Number: 90-248-8B
Bulletin Sequence Number: 092
Date of Bulletin: 9005
NHTSA Item Number: SB013903
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: LIGHTING AND COMMUNICATIONS SYSTEMS
Summary: UNDERHOOD LAMPS INOPERATIVE/STAYING ON-MAY BE DUE TO MERCURY SWITCH BEING PARTIA LLY OR WHOLLY DISENGAGED OR SHORTED/OPEN INTERNAL CIRCUIT-REPLACE SWITCH W/NEW P N 16503204-1984-90 CHEVY CORVETTE RC

Service Bulletin Number: 90-256-7A
Bulletin Sequence Number: 104
Date of Bulletin: 9005
NHTSA Item Number: SB013950
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: POWER TRAIN:TRANSMISSION:AUTOMATIC
Summary: SERVICE REPLACEMENT TRANSMISSIONS ASSEMBLY (SRTA) PROGRAM INTRO-82-90 CHEVY W/TH M 200-4R AUTOMATIC TRANS RC

Service Bulletin Number: 90-191-7A
Bulletin Sequence Number: 121
Date of Bulletin: 9003
NHTSA Item Number: SB014051
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: POWER TRAIN:CLUTCH ASSEMBLY
Summary: REVISED DRIVE LINK WEAR SPECS TO MIN NOISE-84-90 CHEVY A, J, L, T, X CARDS & 90 LUMINA & LUMINA APV W/3T40 OR 4T60 AUTOMATIC RC

Service Bulletin Number: 90-216-6
Bulletin Sequence Number: 126
Date of Bulletin: 9004
NHTSA Item Number: SB014056
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ENGINE
Summary: PROPER INSTALLATION OF 75MM OIL FILTER-INSTRUCTIONS-ALL 81-90 CHEVY RC

Service Bulletin Number: 91-57-6E
Bulletin Sequence Number: 140
Date of Bulletin: 9008
NHTSA Item Number: SB017654
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: MANUFACTURER'S INFORMATION TO DEALERS
Summary: INFO ON STATE EMISSIONS TESTING-ALL 81-91 CHEVY RC

Service Bulletin Number: 90-316-5
Bulletin Sequence Number: 149
Date of Bulletin: 9008
NHTSA Item Number: SB017713
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: BRAKES:HYDRAULIC SYSTEM
Summary: CHANGE IN BRAKE EFFECTIVENESS AFTER DISC BRAKE ROTOR REFINISHING/PAD REPLACEMENT -PROPER SERVICE PROCEDURES-ALL 81-90 CHEVY RC

Service Bulletin Number: 90-321-3E
Bulletin Sequence Number: 151
Date of Bulletin: 9008
NHTSA Item Number: SB017715
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: WHEELS
Summary: PROCEDURES ON SCUFF REMOVAL FROMALUMINUM WHEELS-81-90 CHEVY RC

Service Bulletin Number: 91-85-8A
Bulletin Sequence Number: 179
Date of Bulletin: 9010
NHTSA Item Number: SB017842
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ELECTRICAL SYSTEM:IGNITION
Summary: PROCEDURE FOR CHECKING CONNECTOR TERMINAL CONTACT-DIAGNOSTICS-82-91 CHEVY RC

Service Bulletin Number: 90-293-5
Bulletin Sequence Number: 189
Date of Bulletin: 9007
NHTSA Item Number: SB017913
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: BRAKES:HYDRAULIC SYSTEM
Summary: BRAKE ROTOR POOR FINISH AND/OR HARD BRAKE PEDAL FEEL AFTER REFINISH-DUE TO USING NONM-ORIGINAL CUTTING TIPS-ONLY ORIGINALS SHOULD BE USED-81-90 CHEVY RC

Service Bulletin Number: 90-372-7A
Bulletin Sequence Number: 200
Date of Bulletin: 9010
NHTSA Item Number: SB017924
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: POWER TRAIN
Summary: SERVICE REPLACEMENT TRANS ASSEMBLY MODEL UPDATE-82-90 CHEVY RC

Service Bulletin Number: 91-35-3E
Bulletin Sequence Number: 238
Date of Bulletin: 9008
NHTSA Item Number: SB021872
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: WHEELS
Summary: WHEEL WEIGHTS FOR ALUMINUM WHEELS-85-91 CHEVY RC

Service Bulletin Number: 91-126-8E
Bulletin Sequence Number: 244
Date of Bulletin: 9011
NHTSA Item Number: SB021878
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: VISUAL SYSTEMS:WINDSHIELD WIPER AND WASHER
Summary: CHATTERING WIPER BLADES-CLEANING PROCEDURES-ALL CHEVY & TRUCK RC

Service Bulletin Number: 91-133-5
Bulletin Sequence Number: 246
Date of Bulletin: 9012
NHTSA Item Number: SB021880
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: BRAKES:HYDRAULIC SYSTEM
Summary: CHANGE IN EFFECTIVENESS AFTER DISC BRAKE ROTOR REFINISH/PAD REPLACEMENT-DUE TO N EW MATERIALS-ALL CHEVY & TRUCK RC

Service Bulletin Number: 87-309-8B
Bulletin Sequence Number: 014
Date of Bulletin: 9103
NHTSA Item Number: SB022065
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: LIGHTING AND COMMUNICATIONS SYSTEMS
Summary: NEW HEADLAMP DOOR ACTUATOR KITS-84-87 CORVETTE RC

Service Bulletin Number: 91-208-3B
Bulletin Sequence Number: 027
Date of Bulletin: 9102
NHTSA Item Number: SB022078
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: STEERING:POWER ASSIST
Summary: REDUCED POWER STEERING ASSIST AT LOW AMBIENT TEMPS-<10 DEGRESS F-STEERING FLUID THICKENS-NEW LOW TEMP FLUID DEVELOPED-ALL 80-91 CHEVY RC

Service Bulletin Number: 91-251-0B
Bulletin Sequence Number: 80
Date of Bulletin: 9103
NHTSA Item Number: SB024280
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ELECTRICAL SYSTEM:IGNITION
Summary: PAINT ETCHING/STAINING BC

Service Bulletin Number: 91-241-5
Bulletin Sequence Number: 058
Date of Bulletin: 9103
NHTSA Item Number: SB025662
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: BRAKES:HYDRAULIC:ANTI-SKID SYSTEM
Summary: ABS NOISE SELF TEST-1986 TO 1991 CORVETTE AND 1989-91 CAPRICE DG

Service Bulletin Number: 91-280-6E
Bulletin Sequence Number: 065
Date of Bulletin: 9104
NHTSA Item Number: SB026266
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: FUEL:FUEL INJECTION SYSTEM
Summary: MULTEC PORT FUEL INJECTORS/CLEANING-1986/91 CAMARO/CAVALIER/CORVETTE, 1986/90 CE LEBRITY, 1987/91 CORSICA AND BERETTA AND 1990/91 LUMINA CM

Service Bulletin Number: 91-283-7A
Bulletin Sequence Number: 069
Date of Bulletin: 9104
NHTSA Item Number: SB026270
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: POWER TRAIN:TRANSMISSION:AUTOMATIC
Summary: BINDING OR INOPERATIVE IN REVERSE-STUCK 4-3 SEQUENCE VALVE AND/OR 2-3 SHIFT VALV E, TO CORRECT VALVE BODY MUST BE COMPLETELY DISASSEMBLED AND RECONDITIONED ACCOR DING TO PROCEDURES-1982-91 CHEVY CARS W/ 700R4 AUTO TRANSMISSIONS CM

Service Bulletin Number: 91-312-6E
Bulletin Sequence Number: 095
Date of Bulletin: 9105
NHTSA Item Number: SB027130
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: FUEL:FUEL INJECTION SYSTEM
Summary: MULTEC PORT FUEL INJECTORS/CLEANING-1986-90 CELEBRITY, 1986-91 CAMARO/CAVALIER/ CORVETTE, 1987-91 CORSICA/BERETTA, AND 1990/91 LUMINA/STORM LW

Service Bulletin Number: 90-412-10
Bulletin Sequence Number: 115
Date of Bulletin: 9103
NHTSA Item Number: SB027341
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: EQUIPMENT:ELECTRIC POWER ACCESSORIES:SEATS
Summary: POWER SEAT INOPERATIVE AND/OR BLOWS FUSE-SEAT CONTROL SWITCH WIRE HARNESS MAY BE SHORTED AT GEARNUT SUPPORT BRACKET-REPAIR AND/OR REPLACE HARNESS AS REQUIRED-198 4-1990 CORVETTES LW

Service Bulletin Number: 91-371-7A
Bulletin Sequence Number: 126
Date of Bulletin: 9107
NHTSA Item Number: SB028103
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: POWER TRAIN:TRANSMISSION:AUTOMATIC
Summary: TRANSMISSION STUCK IN FIRST GEAR-INSTALL NEW RETAINING RING, BE CAREFUL NOT TO OVER EXPAND THE RETAINING RING-1982 TO 1991 CHEVY CAPRICE/CAMARO & CORVETTES DG

Service Bulletin Number: 91-384-6E
Bulletin Sequence Number: 132
Date of Bulletin: 9108
NHTSA Item Number: SB028104
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ELECTRICAL SYSTEM:IGNITION:ELECTRONIC CONTROL UNIT
Summary: DAMAGED ECM/PCM AND/OR MIS-DIAGNOSED ECM/PCM SYMPTOMS DUE TO INCORRECT "TAP-TEST ING" PROCEDURES-ALL 1982 TO 1991 CHEVROLET CARS DG

Service Bulletin Number: 91-390-7A
Bulletin Sequence Number: 142
Date of Bulletin: 9108
NHTSA Item Number: SB028529
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: POWER TRAIN:TRANSMISSION:AUTOMATIC
Summary: NEW OUTPUT SHAFTS & INPUT HOUSING TO OUTPUT SHAFT SEAL-1982 TO 1991 CAPRICE, CAM ARO AND CORVETTES DG

Service Bulletin Number: 91-396-7A
Bulletin Sequence Number: 143
Date of Bulletin: 9108
NHTSA Item Number: SB028530
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: POWER TRAIN:TRANSMISSION:AUTOMATIC
Summary: EVALUATING PEENED SPACER PLATES-1982 TO 1991 CHEVROLET CARS WITH A/T DG

Service Bulletin Number: 92-42-7A
Bulletin Sequence Number: 183
Date of Bulletin: 9111
NHTSA Item Number: SB029964
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: POWER TRAIN:TRANSMISSION:AUTOMATIC
Summary: INTERMITTENT TRANSMISSION DOWNSHIFT DG

Service Bulletin Number: 93-29-7A
Bulletin Sequence Number: 174
Date of Bulletin: 9210
NHTSA Item Number: SB032151
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: POWER TRAIN:TRANSMISSION:AUTOMATIC
Summary: BUZZING NOISE FROM TRANSMISSION AT IDLE DG

Service Bulletin Number: 93-35-6D
Bulletin Sequence Number: 177
Date of Bulletin: 9210
NHTSA Item Number: SB032154
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: ELECTRICAL SYSTEM:IGNITION
Summary: ENGINE MISS/HESITATION DUE TO PIERCED SECONDARY IGNITION COMPONENTS DG

Service Bulletin Number: 91-208-3B
Bulletin Sequence Number: 109
Date of Bulletin: 9403
NHTSA Item Number: SB036039
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: STEERING:POWER ASSIST
Summary: REDUCED POWER STEERING ASSIST AT LOW AMBIENT TEMPERATURES. *TW

Service Bulletin Number: 93-131-10
Bulletin Sequence Number: 180
Date of Bulletin: 9303
NHTSA Item Number: SB039547
Make: CHEVROLET
Model: CORVETTE
Year: 1986
Component: VISUAL SYSTEMS:GLASS:WINDOW:TAILGATE AND BACK DOOR
Summary: REAR LIFT WINDOW HARD TO OPEN/HINGE LOOSE TO GLASS. *TW