Clutch and Transmission

Subject: Garage Shift Delay Engagement (New Garage Shift Package) Model and Year: 1994 BUICK ROADMASTER 1994 CADILLAC FLEETWOOD 1994 CHEVROLET CAMARO, CAPRICE AND CORVETTE 1994 PONTIAC FIREBIRD 1994 CHEVROLET AND GMC TRUCK C/K AND S/T... Read More

Subject: TRANSMISSION "WHINE" NOISE, LOSS OF MOTION IN ALL GEARS, OR MISSING CLUTCH DISC RIVETS (REPLACE TRANSMISSION CLUTCH HOUSING) Model and Year: 1993 CHEVROLET CORVETTE WITH SIX-SPEED MANUAL TRANSMISSION AND 5.7L (LT1) ENGINE (VIN CODE P) ... Read More

Subject: No Reverse, Second Gear or Fourth Gear (Replace Reaction Sun Shell with More Robust Heat Treated Parts)Model and Year: 1993-2005 Corvette with 4L60/65-E Automatic Transmission (RPOs M30 or M32)Source: Chevrolet Dealer Sevice ... Read More

Subject: HARSH 1-2 UPSHIFT INSTALL SERVICE PACKAGE Model and Year: 1992 CAPRICE, CAMARO AND CORVETTE 1992 C/K, G, L/M, S/T TRUCKS Source: Chevrolet Service Bulletin Bulletin Number: 92-318-7A - (09/15/1992) TRANSMISSION APPLICATIONS:... Read More

Subject: NEW LO & REV. CLUTCH SUPPORT SELECTIVE PLATE DIMENSIONS Model and Year: 1990 B, F, Y CARS AND ALL TRUCKS AND VANS WITH 4L60 (700-R4) AUTOMATIC TRANSMISSION Source: Chevrolet Service Bulletin Bulletin Number: 90-223-7A - (05/21... Read More

Subject: CLUTCH APPLY PLATE MATERIAL CHANGED TO POWDERED METAL Model and Year: 1990 ALL CARS, TRUCKS, VANS WITH 4L60 (700-R4) AUTOMATIC TRANSMISSION Source: Chevrolet Service Bulletin Bulletin Number: 90-189-7A - (03/06/1990) This bulletin... Read More

Number: 02-07-30-024Subject: Info - Diagnosis of Cracked or Broken Transmission Case Model Year: 1990-1993 Buick Roadmaster, Estate Wagon1990-1996 Cadillac Fleetwood1990-1996 Chevrolet Caprice1990-2002 Chevrolet Camaro1990-2003 Chevrolet Corvette1995... Read More

Subject: 3-2 COAST DOWN CLUNK (INSTALL SERVO SPRING) Model and Year: 1990-91 CORVETTE WITH 4L60 AUTOMATIC TRANSMISSION Source: Chevrolet Service Bulletin Bulletin Number: 91-372-7A - (06/27/1991) TRANSMISSION MODELS: OYDM, 1 YDM, 1 YHM ... Read More

Model Year: 1989-96 CHEVROLET CORVETTE WITH ZF 6-SPEED MANUAL TRANSMISSION (ML9) Subject: INFORMATION ON CORVETTE ZF 6-SPEED MANUAL TRANSMISSION SERVICE PROCEDURE Source: Chevrolet Dealer Service Bulletin Bulletin Number: 77-72-04 ... Read More

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