Pontiac Bonneville

On certain vehicles, a combination of a low battery condition and fuel in the upper intake manifold while the ignition key is activated at engine start could cause an elevated rate of manifold over-pressurization events.  The operator may experience a loud bang / intake backfire that could rupture the intake manifold, resulting in emitting dust from under the hood and a no-start condition.  If this event were to occur, and if an ignition source were present, an engine compartment fire could occur.  Correction:  Dealer will replace the fuel pressure regulator.

On certain Aurora, Bonneville SSEi, Devile and STS vehicles, the fuel tank pressure sensor is unusually susceptible to malfunctions causing excessive vacuum to be applied during self-diagnostic testing.  Fuel system components can be damaged and fuel can leak from the vehicle when it is refueled.  Possible symptoms of this condition are illumination of the Service Engine Soon light, poor driveability, increase noise from the fuel tank area, and inaccurate fuel gauge readings.  If there is an ignition source present, a fire could result.  Correction:  Dealer will replace the fuel tank pressure sensor.

Certain vehicles may have a driver's side airbag inflator that could fracture at a weld during a deployment.  Pieces of the inflator could strike and injure vehicle occupants and the airbag cushion would not inflate fully, reducing the capacity of the bag to protect the driver.  Correction:  Dealers are to inspect and if necessary replace the driver side airbag module assembly.

Certain vehicles may have internal fluid leaks in the brake hydraulic control unit.  When the rear brake proportioning, antilock brake, traction control, or stability control feature is activated in some driving situations, the feature may not perform as designed and the driver could lose vehicle control.  Correction:  ABS hydraulic modulator unit will be inspected and replaced if necessary.

Certain vehicles do not comply with the requirements of CMVSS 1101 -  Emission Device.  Vehicles were built with incorrect emission control labels. The emission control (tune up) labels have an incorrect emission vacuum hose routing schematic.  Correction:  Dealers will install a new vehicle emission control label on the radiator support.