A new top-line model and a new V6 highlight 2004 for Buick's crossover SUV. Rendezvous shares its basic structure with the Pontiac Aztek, but is four inches longer to allow 3rd-row seating. Like Aztek, it's based on GM's front-wheel-drive minivans. Rendezvous offers CX, CXL, and the new Ultra models. CX and CXL come with a 185-hp 3.4-liter V6 and a choice of front-wheel drive with optional traction control or all-wheel drive without low-range gearing. Ultra has AWD and comes with GM's new 245-hp 3.6-liter V6. The 3.6 is also optional for the CXL. All models use a 4-speed automatic transmission. ABS and front side airbags are optional on the 2WD CX, standard on other models. Second-row seating choices are a 3-person split bench or available twin buckets for the CX and CXL; 2nd-row buckets are the only choice for the Ultra. Ultra has a standard 2-passenger 3rd-row seat, which is optional for other models. Additional features standard on Ultra and optional on other models are rear-obstacle detection, satellite radio, and head-up instrument display. Rear DVD entertainment is optional on all but CX. OnStar assistance is standard on all but CX, where it's optional. A navigation system is available for the first time.