Corvette Action Center Knowledgebase

1968 Corvette: Service Bulletin: Inadequate Cooling

Dec 1, 2014 1968 corvette, service bulletin, inadequate cooling, cooling, 327 cu. in., improved cooling, valance panel, fan clutch, radiator, fan belt 0 0 859 0/5 (0 Vote)

Subject: Inadequate Cooling Model and Year: 1968 Corvette with 327 Cubic Inch Engine Source: Chevrolet Service Technical Bulletin Bulletin No: 68-T-13 Section: VI Date: May... Read More

1970 Corvette: Service Bulletin: Water Pump Bearing and/or Shaft Failures

Nov 29, 2014 1970 corvette, service bulletin, water pump, bearing, shaft, failure, failures, fan clutch, pulley, run-out, excessive run-out 0 0 964 0/5 (0 Vote)

Subject: Water Pump Bearing and/or Shaft Failures Model and Year: V-8 Engines with Fan Clutch Source: Chevrolet Dealer Service Technical Bulletin Bulletin No: 71-T-37 Section: VI Date: ... Read More

1956 Corvette Service Bulletin: Clutch Disc - Springs - Periodic Vibration

Nov 1, 2014 1956 corvette, service bulletin, clutch disc, springs, clutch, power pack clutches, vibration, periodic vibration, identification, diagnosis 0 0 908 0/5 (0 Vote)

Subject: Clutch Disc - Springs - Periodic Vibration Model and Year: 1956 Passenger Car and Truck Source: Chevrolet Technical Service Bulletin Bulletin No: DR #266 Section: VIr Date: ... Read More

1986 - 1987 Corvette: Service Bulletin: Clutch Master Cylinder Push Rod Bushing

Sep 18, 2014 1986 corvette, 1987 corvette, service bulletin, chevrolet service bulletin, clutch, master cylinder, push rod, bushing 1 1 2045 5/5 (1 Vote)

Subject: Clutch Master Cylinder Push Rod Bushing Model Year: 1986 - 1987 Corvette with Manual Transmission Source: Chevrolet Dealer Service Bulletin Bulletin No: 87-114, Section 7C Date: April, 1987 TO: ALL... Read More

1955 Corvette: Service Bulletin: Foreign Material in Clutch Housings, Secondary Road Operation

Aug 3, 2014 1955 corvette, service bulletin, foreign material, clutch housing, clutch housings, clutch, clutch fork 0 0 766 0/5 (0 Vote)

Subject: Foreign Material in Clutch Housings, Secondary Road OperationModel and Year: 1955 Passenger Cars, 3-Speed TransmissionSource: Chevrolet Technical Service BulletinBulletin Number: DR 217, Section VIDate: July 25, 1955 TO: ALL CHEVROLET... Read More

1990 Corvette: Service Bulletin: L98 and LT5: Revised Air Conditioning Control Circuit Diagnosis

Aug 2, 2014 1990 corvette, zr-1, corvette zr-1, l98, lt5, l98 engine, lt5 engine, a/c, air conditioning, revised, control circuit, diagnosis, ecm, a/c clutch, diagnostic chart, 90-400-6E 1 0 5672 4/5 (4 Votes)

Subject: REVISED AIR CONDITIONING CONTROL CIRCUIT DIAGNOSIS Model and Year: 1990 CORVETTE WITH 5.7L L98 AND LT5 ENGINES Source: Chevrolet Dealer Service Bulletin Bulletin Number: 90-400-6E THIS BULLETIN CANCELS AND SUPERSEDES DEALER... Read More

1970+ Corvette: Service Bulletin: Positraction Chatter

Aug 2, 2014 1970 corvette, c3 corvette, service bulletin, positraction, chatter, clutch, clutch plates, differential, housing 1 0 1192 5/5 (1 Vote)

Subject: Positraction ChatterModel and Year: NASource: Chevrolet Dealer Service Technical BulletinBulletin Number: 78-T-5, Section IVDate: Jan., 1978 TO: ALL CHEVROLET DEALERS In some cases after extended expressway driving in warm ambients, a... Read More

1987 - 1991 Corvette: Service Bulletin: 4L60 Low & Reverse Clutch New Plate Available

Jul 29, 2014 1987 corvette, 1988 corvette, 1989 corvette, 1990 corvette, 1991 corvette, service bulletin, 4l60, transmission, automatic transmission, low clutch, reverse clutch, clutch plate, 91-186-7A 0 0 1456 0/5 (0 Vote)

Subject: 4L60 LOW & REVERSE CLUTCH NEW WAVE PLATE IS AVAILABLE Model and Year: 1987-91 CAPRICE, CAMARO, CORVETTE AND 1987-91 C/K, RN, S/T TRUCKS, G, M VANS AND 1990-91 L VAN WITH 4L60 AUTOMATIC TRANSMISSION Source: Chevrolet Service... Read More

1989 - 1990 Corvette: Howling, or Squealing Sound Coming From Clutch

Jul 29, 2014 1989 corvette, 1990 corvette, howling, squealing, clutch, crankshaft, pilot, bushing, jim ingle 0 0 865 0/5 (0 Vote)

From Jim Ingle, GM Powertrain Engineer:"The problem you're most likely experiencing is a noisy crankshaft pilot bushing. There is a later design released for service that tends to retain grease better than the one you have and therefore doesn't... Read More

1990 Corvette: Service Bulletin: New Low and Reverse Clutch Support Selective Plate Dimensions

Jul 29, 2014 1990 corvette, service bulletin, new low, reverse, clutch, support, selective, plate, dimensions, 90-223-7A, 4l60, transmission, automatic transmission 0 0 1009 0/5 (0 Vote)

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

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