TSB 671-17 (S: 4.3/5.0/5.7/6.0/7.0/7.4L Eng Wacker T330 RTV Sealant (67-61-17A)

Affected years: May 1996

Details

WARNING: This page is about the Cab & Chassis C2500, 2D Pickup, 5.7 K, Automatic, 3L80-HD/M40, which is a different variant/trim than selected. Publication date: 1996-08-01 Reference number: 67-61-17A Supersedes refnos: 67-61-17 4.3/5.0/5.7/6.0/7.0/7.4L ENG WACKER T330 RTV SEALANT 4.3/5.0/5.7/6.0/7.0/7.4L ENG WACKER T330 RTV SEALANT TECHNICAL SERVICE BULLETIN Reference Number(s): 67-61-17, 67-61-17A USE OF WACKER T-330 RTV SEALANT (PRONOUNCED VAUCKER T) Model(s): 1990-96 Buick Roadmaster, Estate Wagon 19996 Cadillac Fleetwood 1990-96 Chevrolet Camaro, Caprice, Corvette, Impala SS 1990-92 Oldsmobile Custom Cruiser 1990-96 Pontiac Firebird 1990-96 Chevrolet and GMC Light and Medium Duty Trucks Section: 6 - Engine Bulletin No.: 67-61-17A Date: August, 1996 NOTE: This bulletin supersedes Technical Information Bulletin number 67-61-17 May 1996. VEHICLES AFFECTED 1990-96 Buick Roadmaster, Estate Wagon, 19996 Cadillac Fleetwood, 1990-96 Chevrolet Camaro, Caprice, Corvette Impala SS, 1990-92 Oldsmobile Custom Cruiser, 1990-96 Pontiac Firebird all above with 4.3L and 5.7L engine (VINs W, P, 5, 8 - RPOs L99, L98, LT1, LT4). 1990-96 Chevrolet and GMC Light and Medium Duty Trucks with 4.3L, 5.0L, 5.7L, 6.0L, 7.0L, 7.4L engines (VINs W, Z, E, H, K, M, N, P, R - RPOs L35, LB4, L03, L05, LS0, LR0, L19, L30, L31). This bulletin is being revised to add further Chevrolet models. Please discard Corporate I Bulletin Number 671-17 (Section 6 - Engine). SERVICE INFORMATION When installing the intake manifold, use a 5 mm (1/4 in.) thick bead of Wacker T-330 RTV, P/N 12346192, on the front and rear sealing areas between the engine block and intake manifold. See Fig 1 and Fig 2 . Wacker T-330 RTV has improved adhesive abilities, is oxygen sensor safe, and is noncorrosive to ferrous metals. Wacker T-330 RTV cannot be used in coolant sealing surface areas. Fig 1: Rear Of Block Fig 2: Front Of Block