Upper intake manifold failed in my 1998 Pontiac Bonneville while driving on the interstate and caused the engine to hydrolock. This failure caused additional failures of the starter and spark plugs. Also the lower intake manifold was replaced without failing with a redesigned part. This leads me to believe that GM thinks there is something wrong with these manifolds that they need to be replaced with redesigned parts even if they don't fail. Total cost of repairs was $1600.

- Des Moines, IA, USA

While driving in city at aprox 35mph warning light came on for emission control. Contacted dealer, who said that it was the transmission, and it was not under warranty. But vehicle needed a new transmission.

- Tacoma, WA, USA

Consumer reporting a rental vehicle from hertz/ concerning following problems, 1) left side windshield wiper works intermittently; 2). Fuel vapors leaking into vehicle, and 3) trunk lid will not close properly, causing exhaust vapor enterning the vehicle. Reported these condition to NHTSA. Rental vehicle located in St. Paul, mn.

- Anchorage, AK, USA