Two problems related to gasoline engine have been reported for the 1996 Buick Riviera. The most recently reported issues are listed below.
3800 series ii super charged engine; while driving heard clanking engine dropped dead on highway coast to stop. Dealer will not open engine, just replace. Tt.
Traction light came on and stayed on, which could indicate a problem with engine or brakes per owner's manual. Contacted dealer.