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1988 Corvette: Service Bulletin: 1988 Anniversary Model: Discolored Door Armrest

Model Year: 1988 Y-Car Anniversary ModelSubject: Discolored Door ArmrestSource: Chevrolet Dealer Service BulletinBulletin Number: 88-399-10, Section 10Date: April, 1989TO: ALL CHEVROLET DEALERSOwners of 1988 Corvette "Anniversary Edition" models who... Read More

1992 Corvette: Service Bulletin: Brake Pedal Not Fully Returning / Stop Lights Stay On and/or Roughness/Vibration From Rear of Vehicle

Subject: BRAKE PEDAL NOT FULLY RETURNING, STOP LIGHTS STAY ON, AND/OR ROUGHNESS-VIBRATION-NOISE FROM REAR OF VEHICLE Model and Year: 1992 CHEVROLET CORVETTE Source: Chevrolet Service Bulletin Bulletin Number: 92-71A-5 - (01/31/1992) THIS... Read More

1985 Corvette: Service Bulletin: Low Idle Speed and Launch Stalls

Subject: Low Idle Speed and Launch StallsModel and Year: 1985 CorvetteSource: Chevrolet Dealer Sevice BulletinBulletin Number: 85-186, Section 6EDate: Mar., 1986 TO:  ALL CHEVROLET DEALERS Some 1985 Corvettes with manual transmission may... Read More

1989 - 1996 Corvette: Differences between First and Second Generation ZF 6-Speed Transmissions

From ZF regarding ZF transmission noise and differences between the ZF used in early and late ZR-1s - July 12, 2000: "All S6-40 transmissions installed in the C4 Corvette contain 100% helical gears.  In fact, all of the gearboxes ZF produces for... Read More

1990 Corvette: Service Bulletin: Tech 1 Revised Odometer Recalibration Procedure

Subject: TECH 1 REVISED ODOMETER RECALIBRATION PROCEDURE Model and Year: 1990 CorvetteSource: Chevrolet Service BulletinBulletin Number: 90-373-8C - (11/21/1990)TO: ALL CHEVROLET DEALERSTHIS BULLETIN CANCELS AND SUPERSEDES DEALER SERVICE BULLETIN NO.... Read More

1990 - 1995 Corvette ZR-1: Technical Article: LT5 Secondary Port Operation & Vacuum Diagnosis

LT5 Secondary Port Operation & Vacuum Diagnosis by Robert Loszewski Copyright 2001 Before getting into diagnosing the LT5 engine's secondary port vacuum system, I thought it would be a good idea to take this opportunity to clear up a few... Read More

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