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Subject: New Vacuum Modulator Hoses Model and Year: All 1972 - 1973 Models with Automatic Transmission Source: Chevrolet Service News Page Number: Page 1 Date: November 1972, Volume 44, Number 11 Two new vacuum modulator hoses have been... Read More

Subject: Vacuum Modulation System InspectionModel and Year: 1958-1959 Powerglide and 1957 Thru 1959 Turboglide TransmissionsSource: Chevrolet Technical Service BulletinBulletin Number: DR #411, Section VIIDate: July 22, 1959 TO:  ALL CHEVROLET... Read More

Subject: HIGH, ROUGH, UNSTABLE IDLE VACUUM LEAK Model and Year: 1982-83 CAMARO, 1982-84 CORVETTESource: Chevrolet Service BulletinBulletin Number: 84-30 - (11/11/1983) High, rough, or unstable idle condition may be caused by vacuum leaks by the TBI... Read More

Subject: Product Campaign: Distributor Vacuum Vent HarnessModel and Year: 1995 Chevrolet CorvetteSource: Chevrolet Dealer CampaignBulletin Number: 95-C-38To: All Chevrolet/Geo DealersGeneral Motors has decided that certain 1995 Chevrolet Corvettes... Read More

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

Subject:    Anti-Theft Audio Alarm Model and Year:  1969 Corvette Source: Chevrolet Advance Information Inter-Organization Letter Bulletin Number:  A.I. 69-4 Date:   March 20, 1969 This letter is being... Read More

Subject:   New Clutch Pressure Plate Released for 1962 Corvette Model and Year:   1957 - 1962 Corvette Source:  Chevrolet Advance Information Letter - Central Office Bulletin No:   A.I. #62-3 Date:   ... Read More

Subject:   A.I. 61-1 3-Speed Transmission Extension Bushing Model and Year:   1961 Passenger, Corvette and 10-20 Series Trucks Source:  Chevrolet Advance Information Bulletin Bulletin No:    A.I. 61-1 ... Read More

By John HinckleyUsed here with permission.Copyright John HinckleyThe objective of this article is to show how to verify the operation of these systems and make necessary corrections at home, using ordinary tools; there’s no need for a classic... Read More