Antilock brakes are optional instead of standard for 2003 on the least-expensive versions of Pontiac's compact coupes and sedans. Revised appearance for Grand Am sedans, which lose their lower-body plastic cladding, is the other newsmaker this year. Sedans come in base SE and uplevel SE1 and SE2 trim for '03. Both sedans and coupes are also offered in sportier GT and GT1 models. GT and GT1 versions retain cladding. SE and SE1 have a 4-cyl engine and manual or automatic transmission. A V6 with automatic transmission is standard for SE2 and available for SE1. GTs have a "Ram Air" V6 with slightly more power. This year, ABS and traction control are a $400 option for SE and SE1, but remain standard elsewhere. GTs have rear disc brakes vs. drums on other models. In other changes, all Grand Ams except the SE get XM satellite-radio service with 100-channel digital receiver as a new option. The SE2 sedan is new for '03 and upgrades SE/SE1 features with a leather-wrapped steering wheel with radio controls, a six-way power driver seat, cruise control, and 16-inch wheels. Added as a midyear option for GT1s was a Solid Value Appearance package with 30th-anniversary badges and special trim. Grand Am shares its basic design with the Oldsmobile Alero, which will be dropped after model-year 2004.