Riviera V6-231 3.8L VIN L SFI (1991)
Piston: All Technical Service Bulletins
Piston Specifications - Revised
FILE IN SECTION: 6 - Engine
BULLETIN NO.: 57-61-17
DATE: June, 1995
SUBJECT:
Section 6A - Revised Piston Specifications
MODELS:
1988-90 Buick Electra
1988-91 Buick Reatta
1988-93 Buick Riviera
1988-94 Buick LeSabre, Park Avenue
1990-94 Buick Regal
1992-94 Chevrolet Lumina APV
1988-92 Oldsmobile Toronado, Trofeo
1988-94 Oldsmobile Eighty Eight, Ninety Eight
1992-94 Oldsmobile Silhouette
1988-94 Pontiac Bonneville
1992-94 Pontiac Trans Sport
with 3800 Engine (VINs C, L, 1 - RPOs LN3, L27, L67)
The piston specifications for the 3800 engine from 1988-94 have been revised. This information should replace the piston specifications found in the
applicable Service Manual. Use the following specifications when servicing of the piston is required.
