One problem related to manifold/header/muffler/tail pipe has been reported for the 2003 Lexus GX470. The most recently reported issues are listed below.
When hard accelerating sulfur smell enters cabin makes me nauseated. . . Wonder if carbon monoxide is entering cabin also . When stopping or stopped drive shaft bumps hard like someone hitting back of vehicle.
| Engine Exhaust System problems | |
| Engine Cooling System problems | |
| Manifold/header/muffler/tail Pipe problems | |
| Gasoline Engine problems | |
| Catalytic Convertor problems |