1999 Chevrolet Corvette TSBs

INFORMATION ON PROPER ENGINE OIL LEVEL USAGE.

SOME OWNERS MAY COMMENT ON HIGHER THAN EXPECTED OIL CONSUMPTION.

SOME CUSTOMERS MAY COMMENT ON A HARSH 1-2 UPSHIFT AND THE CHECK ENGINE LIGHT OR SERVICE ENGINE SOON INDICATOR IS...

SOME CUSTOMERS MAY COMMENT ON A MILD TO SEVERE ENGINE PING (COMMONLY REFERRED TO AS SPARK KNOCK) USUALLY WORSE DURING...

SOME CUSTOMERS MAY COMMENT ON A MILD TO SEVERE ENGINE PING (SPARK KNOCK) DURING ACCELERATION AND / OR ILLUMINATED...

SOME CUSTOMERS MAY COMMENT THAT THE SERVICE ENGINE SOON LAMP IS ILLUMINATED, NO 3RD AND 4TH GEAR, THE TRANSMISSION DOES...

SUBJECT REGARDING AVAILABILITY OF SERVICE CALIBRATIONS TO CORRECT COMPLAINTS OF DETONATION OR SPARK KNOCK.

INFORMATION REGARDING HARSH 1-2 UPSHIFT, SERVICE ENGINE SOON, MALFUNCTION INDICATOR LAMP, OR CEL ILLUMINATED, DIAGNOSTIC TROUBLE CODE P1870 SET.

INFORMATION REGARDING HIGHER THAN EXPECTED OIL CONSUMPTION.

SUBJECT REGARDING ENGINE OIL REQUIREMENTS.

SOME VEHICLES MAY EXPERIENCE A CONDITION IN WHICH THE ELECTRONIC COLUMN LOCK MAY NOT FUNCTION AS INTENDED, THE CONDITION...

SOME OWNERS WITH VEHICLES BUILT BEFORE JANUARY 15,1999 MAY COMMENT ON A HARSH 1-2 UPSHIFT AND MAY ALSO HAVE A CHECK ENGINE LIGHT.

SUBJECT ORDERING REFERENCE TABLE FOR ORDERING THE NEW VALVE BODY, SPACER PLATE AND GASKET KIT.

INFORMATION PERTAINING TO THE NEW CONTROL VALVE BODY, SPACER PLATE AND GASKETS FOR THE 4L60-E AUTOMATIC TRANSMISSION.

THIS MESSAGE IS CONCERNING CUSTOMER COMMENTS OF EXCESSIVE OIL CONSUMPTION.

GENERAL MOTORS HAS DECIDED THAT A DEFECT WHICH RELATES TO MOTOR VEHICLE SAFETY EXISTS IN CERTAIN VEHICLES.

SOME CUSTOMERS MAY COMMENT ON AN INOPERATIVE WINDOW MOTOR; A GROWLING TYPE NOISE FROM INSIDE THE DOOR AS THE GLASS IS GOING UP OR DOWN.

CONCERNS WITH ENGINE LOW COOLANT LIGHT COMING ON AT START-UP.

SOME CUSTOMERS MAY COMMENT ABOUT THE SERVICE ENGINE SOON LIGHT ILLUMINATING.

EXHIBITING A SQUEAK NOISE COMING FROM THE ENGINE OR ACCESSORY DRIVE WHILE ENGINE IS RUNNING.

Refinishing Aluminum Wheels This bulletin updates General Motor's position on refinishing aluminum wheels.

Refinishing Aluminum Wheels This bulletin updates General Motor's position on refinishing aluminum wheels.

This Preliminary Information communication provides information to the technician about cooler line fittings that come...

This Preliminary Information communication provides information to the technician vehicles with a slight rough idle.

This Preliminary Information communication provides information to the technician vehicles with a slight rough idle.

This Preliminary Information communication provides information to the technician about vehicles that have front and or...

4L60E, 4L65E REPLACEMENT VALVE BODY GASKETS DOES NOT SEEM TO FIT.

CHECK ENGINE LIGHT WITH A P0300 DUE TO 2-4 CYLINDERS MISFIRING ON THE SAME BANK OF THE ENGINE.

THE ENGINE DOES NOT STALL WHEN PERFORMING A P1870 DIAGNOSTIC TEST WITH THE TECH 2 SCAN TOOL OR WHEN COMMANDING THE...

ROLL-OUT FOR THE GEN III SMALL BLOCK ENGINES WITH IRIDIUM SPARK PLUGS.

THE SERVICE ENGINE SOON LAMP IS ILLUMINATED, NO 3RD AND 4TH GEAR, THE TRANSMISSION DOES NOT SHIFT CORRECTLY, THE...

REAR AXLE SIDE COVER OIL LEAK.

REAR AXLE SIDE COVER OIL LEAK.

WATER LEAK INTO THE DRIVER'S FOOT WELL AREA.

COMPLAINTS ABOUT THE DRIVER SEATBACK RECLINER NOT MAINTAINING THE SET POSITION.

A CONCERN HAS BEEN IDENTIFIED WHERE A SCREW THAT ATTACHES THE B-PILLAR WEATHER-STRIP RETAINER CONTACTS THE CONVERTIBLE...

SUBJECT REGARDING GENERAL WATERLEAK GUIDE.

SUBJECT REGARDING GENERAL WATERLEAK GUIDE.

SUBJECT REGARDING WIND NOISE FROM UPPER B PILLAR AREA.

SOME CUSTOMERS MAY COMMENT ON A SQUEAK COMING FROM THE REAR OF THE CONVERTIBLE TOP.

SOME VEHICLES MAY EXHIBIT A CONDITION IN WHICH THE LAP BELT WEBBING MAY TWIST, ALLOWING THE WEBBING TO BECOME JAMMED IN THE RETRACTOR.

SOME VEHICLES MAY EXHIBIT A CONDITION IN WHICH THE LAP BELT WEBBING MAY TWIST, ALLOWING THE WEBBING TO BECOME JAMMED IN THE RETRACTOR.

SUBJECT REGARDING HESITATION, SAG, STUMBLE AND / OR BACKFIRE ON ACCELERATION.

VEHICLES BUILT PRIOR TO VIN BREAKPOINT X5116322 MAY EXHIBIT PREMATURE WEAR OF LEATHER MATERIAL ON BUCKET SEATBACK BOLSTER.

UNWANTED ACTIVE HANDLING ACTIVATION DTC C1282.

DECK LID DOES NOT RISE HIGH ENOUGH WHEN RELEASING.

TELESCOPING COLUMN MOVES WITH SEAT SWITCH.

SEAT BACK TWISTING. *EH

REAR HATCH SURFACE BLISTERING.

ELECTRONIC COLUMN LOCK SYSTEM.

700-900 RPM BUZZ MOAN RATTLE RESONANCE NOISE ON ACCELERATION.

SUPPLEMENT TO 02-08-111-001 CONVERTIBLE TOP 5TH BOW RUBS STOWAGE LID.*MR

GMP04-057 - 04006 ELECTRONIC COLUMN LOCK SYSTEM.

FLUID LEAK AT REAR AXLE.

RATTLE RESONANCE REAR OF VEHICLE DURING ACCELERATION.

USING THE CORRECT LOCK TIGHT PRODUCT WHEN SERVICING A REAR AXLE FLUID LEAK FROM THE DIFFERENTIAL SIDE COVER.

FLUID LEAK FROM THE REAR AXLE SIDE LEFT HAND SIDE.

NEEDLE BEARINGS FOUND IN OIL PAN.

SOME OWNERS MAY COMMENT ABOUT INACCURATE / ERRATIC FUEL LEVEL GAGE READING CONDITIONS SUCH AS THE FUEL GAGE SUDDENLY...

SUBJECT REGARDING LEFT FUEL TANK TO UNDERBODY CONTACT / RATTLE NOISE.

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for...

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for...

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for...

This informational bulletin provides the technician with information on what E85 fuel may due to a non E85 vehicle.

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for...

GM: THE FUEL GAUGE MAY SHOW EMPTY WHEN THERE IS STILL GAS IN THE TANK.

REVISED FUEL SENDER VALUES FOR THE CHEVROLET CORVETTE AND CADILLAC XLR.

ERRATIC FUEL GAUGE OPERATION AND DIAGNOSTIC TROUBLE CODE P1431.

SERVICE VME - FUEL GAUGE ERRATIC OR DEFAULTS TO EMPTY.

VEHICLE IS DIFFICULT TO FILL WITH FUEL OR FILLING STATION PUMP SHUTS OFF BEFORE TANK IS FULL.

EXHAUST INTERMEDIATE PIPE AVAILABLE FOR SERVICE.

MUFFLER PAINT PEELING SUPPLEMENT TO TSB 33-17-01A.

LOW OIL, LOW FUEL, OR TEMPERATURE INDICATOR DISPLAYED ON THE HEADS UP DISPLAY.

ERRATIC FUEL GAUGE OPERATION AND DIAGNOSTIC TROUBLE CODE (DTC) P1431.

FUEL GAUGE/PUMP DIAGNOSTIC TESTS.

CREAK, POPPING NOISE FROM REAR OF VEHICLE NEAR THE FUEL TANK AREA.

ERRATIC FUEL GAUGE READING.

SUBJECT REGARDING DISCOLORED HYDRAULIC CLUTCH FLUID.

CUSTOMERS WITH THE MANUAL TRANSMISSION OPTION MAY HAVE CONCERNS WITH NOISE WHN ACCELERATING FROM A STOP IN FIRST.

DIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE.

THIS TECHNICAL SERVICE BULLETIN STATES THAT TECHNICIANS MAY EXPERIENCE DIFFICULTY IN REMOVING THE CONNECTORS FROM THE...

SOME CUSTOMERS MAY COMMENT ON AN INTERMITTENT ACCESSORY DRIVE RUMBLE NOISE WHEN PERFORMING A GARAGE SHIFT AND / OR...

A NO REVERSE, NO SECOND GEAR, OR NO FOURTH GEAR CONDITION.

CONDITIONS WITH INTERMITTENT ACCESSORY DRIVE RUMBLE NOISE DURING GARAGE SHIFT AND / OR DURING PARKING LOT TYPE MANEUVERS.

SOME CUSTOMERS MAY COMPLAIN OF SQUEAK TYPE NOISE FROM LEATHER SHIFT BOOT WHEN SHIFTING GEARS.

CLUTCH PRESSURE PLATE WEAR INDICATOR ADJUSTMENT.

6-SPEED SHIFTER RATTLE GROWL BUZZ NOISE.

6SP MANUAL TRANSMISSION STUCK IN FOURTH GEAR WILL NOT SHIFT OUT OF FOURTH.

HARD CLUTCH PEDAL AND/OR HYDRAULIC SYSTEM FAILURE AFTER SERVICING THE PRESSURE PLATE.

4L60E, 4L65E FORWARD AND LOW REVERSE WAVED STEEL CLUTCH PLATE APPEARANCE CHANGE.

4L60-E AUTOMATIC TRANSMISSION OIL PUMP FIRST AND SECOND DESIGN IDENTIFICATION.

AUTOMATIC TRANSMISSION FLUID LEAK AT REAR OF VEHICLE.

SUBJECT REGARDING REVISED SIDE COVER AND GASKET REPLACEMENT (RH) / DIFFERENTIAL CARRIER COVER AND SEAL REPLACEMENT - RIGHT.

SOME VEHICLES MAY EXPERIENCE ONE OR BOTH OF THE POWER WINDOWS NOT OPERATING.

INFORMATION REGARDING LOOSE OR MISSING HEADLAMP DOOR BEZEL PLUG.

CONCERNS OF DOOR HANDLES ON WHITE PAINTED VEHICLES TRUNING YELLOW.

Underbody Component Corrosion The following information may be helpful when addressing underbody component corrosion with customers.

Underbody Component Corrosion The following information may be helpful when addressing underbody component corrosion with customers.

POWER WINDOW AND/OR DOOR LOCK INOPERATIVE.

WATER LEAK IN THE REAR COMPARTMENT AREA.

WIND NOISE OR WATER LEAK AT TOP OF DOOR GLASS-ADJUSTMENT TIPS.

DECK/TRUNK LID DOES NOT POP UP ENOUGH WHEN RELEASE BUTTON IS USED.

RELEASE OF NEW REAR AXLE SEALS.

SERVICE VME INVOLVING BLOTCHES IN ALL GLASS.

BLOTCHES IN ALL GLASS.

BLOTCHY OR SPOTTY CONDITION PRESENT IN THE GLASS DUE TO THE TEMPERING PROCESS USED TO MEET EUROPEAN REQUIREMENTS.

POWERTRAIN CONTROL MODULE (PCM) REPROGRAMMING AND DATA LINE DIAGNOSIS USING J42236A.

INFORMATION CONCERNING 1997, 1998, 1999, 2000, 2001 AND 2002 CORVETTES WITH BODY CONTROL MODULE CONCERNS ON VEHICLES...

CUSTOMER MAY COMPLAIN THAT THE CHIME SOUNDS WHEN KEY IS REMOVED FROM IGNITION, INTERMITTENT OPERATION OF POWER DOOR...

Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules

This Preliminary Information communication provides information to the technician about vehicles that have a...

REVISED STEERING WHEEL POSITION SENSOR OR STEERING SHAFT LOWER BEARING REPLACEMENT PROCEDURE AND STEERING WHEEL POSITION SENSOR CENTERING PROCEDURE.

POWERTRAIN CONTROL MODULE (PCM) REPROGRAMMING AND DATA LINE DIAGNOSIS USING J42236A.

INFORMATION ON NEW SPARK PLUGS AND GAPPING.

CUSTOMER SATISFACTION CAMPAIGN INVOLVES VEHICLES EXHIBITING A CONDITION IN WHICH THE ELECTRONIC COLUMN LOCK MAY NOT FUNCTION AS INTENDED.

Vehicle Recalls

This Preliminary Information communicates diagnostic information to dealership techs to assist them in diagnosing either...

This warranty administration bulletin provides information regarding the field action courtesy transportation policy.

This warranty administration bulletin provides information regarding the field action courtesy transportation policy.

This warranty administration bulletin provides information regarding the field action courtesy transportation policy.

This warranty administration bulletin provides policy information with the field action courtesy transportation policy.

SEAT BACK RECLINER DOES NOT MAINTAIN THE SET POSITION.

This informational bulletin provides information for dealers/technicians on Procedures to Unlock Delco Radio with...

This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock.

This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock.

This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco Theft Lock.

This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock.

This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock.

This Preliminary Information communication provides information to the technician about vehicles that have multiple Head Up Display issues.

POOR RADIO RECEPTION OR RADIO STATIC/ INCREASED INTERFERENCE WITH REAR WINDOW DEFOGGER ON OR SOME REAR WINDOW DEFOGGER GRIDS MAY BE INOPERATIVE.

Composite Transverse Spring Damage.

CADILLAC/CHEVROLET: FOR NO APPARENT REASON, THE FRONT AND/OR REAR, COMPOSITE SPRINGS WOULD CRACK AND/OR BECOME BROKEN.

REVISED FRONT AND REAR UPPER AND LOWER BALL JOINT STUD NUT TIGHTENING SPECIFICATIONS.

LOWER REAR SHOCK ATTACHING BOLT MAY BREAK AFTER TORQUED.

LOWER REAR SHOCK ATTACHING BOLT MAY BREAK AFTER TORQUED.

SOME CUSTOMERS MAY COMMENT ON EXCESSIVE MOVEMENT IN THE DRIVER SEAT DURING ACCELERATION AND BRAKING.

GM: THE DIAGNOSIS AND PROCEDURE FOR WHEN THE ABS AND TRACTION CONTROL LIGHT IS ON.

CHEVROLET: ABS/TCS LIGHT ON AND DTCS C1225/C0035 AND/OR C1226/C0040 DUE TO AFTERMARKET BRAIDED STAINLESS STEEL BRAKE LINES.

CLARIFICATION OF ANTI-LOCK BRAKING SYSTEM (ABS)-RELATED OPTION CODES.

INFORMATION ON RUN FLAT, ZERO PRESSURE OR EXTENDED MOBILITY TIRES (EMT) AND UNIQUE SERVICING TECHNIQUES.

TIRE PRESSURE MONITORING (TPM) SYSTEM - TIRE MOUNTING AND DISMOUNTING.

NUMBER OF COMMENTS ABOUT THE WHEELS BEING DAMAGED FROM THE WHEEL WEIGHT MOVING ON THE WHEEL FLANGE.

WHEELS WITH PEELING CHROME.

SPECIAL POLICY ADJUSTMENT-ELECTRONIC COLUMN LOCK SYSTEM.

REVISED STEERING COLUMN TURN SIGNAL CANCEL CAM AND STEERING SHAFT UPPER BEARING SPRING REPLACEMENT (MANUAL AND TELESCOPING) PROCEDURE.

A CONDITION IN WHICH THE VEHICLE CAN OPERATE WHEN THE ELECTRONIC STEERING COLUMN FAILS TO UNLOCK.

IPC, INTERIOR LIGHTS AND/OR HEADLAMPS FLICKER.

FOG LAMPS INOPERATIVE.

SLIGHT PULL LEFT OR RIGHT, TIRE WANDER.

THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO REPROGRAM THE MEDIA DISC PLAYER WITH THE LATEST CALIBRATIONS TO CORRECT...

REAR AXLE CHATTER SHUDDER ON TURNS.