A small nylon bushing in the cruise control servo bail may slip out of place, causing intermittent and unexpected increases in engine speed or dieseling (engine run on with ignition off).
Risk: Servo rod assembly could catch on engine components andresult in a stuck throttle with potential for a vehicle crash.
Remedy: Install a new bushing in cruise control servo bail.
Concerns: Buick Electra VI (Model years 1984) · Buick Estate III (Model years 1984–1988) · Buick LeSabre V (Model years 1984–1985) · Buick LeSabre V (Model years 1986–1988) · Buick Regal II (Model years 1984–1987) · Buick Riviera VI (Model years 1984–1985) · Cadillac Brougham (Model years 1985–1988) · Cadillac Eldorado X (Model years 1984–1985) · Cadillac Seville II (Model years 1984–1985) · Chevrolet Caprice III (Model years 1984–1988) · Chevrolet Monte Carlo IV (Model years 1984) · GMC Caballero (Model years 1984) · Oldsmobile 88 VIII (Model years 1984–1985) · Oldsmobile 98 X (Model years 1984) · Oldsmobile Custom Cruiser II (Model years 1984–1988) · Oldsmobile Cutlass V (1978) (Model years 1984–1988) · Oldsmobile Toronado III (Model years 1984–1985) · Pontiac Bonneville VII (Model years 1984) · Pontiac Grand Prix V (Model years 1984) · Pontiac Parisienne V (Model years 1984–1987)
Sources: NHTSA (United States, public domain), Transport Canada (Open Government Licence – Canada), DVSA (United Kingdom, Open Government Licence v3.0), RappelConso and EU Safety Gate (France, Licence Ouverte 2.0).