The GMC Acadia is a crossover SUV manufactured by General Motors for its GMC marque. The first-generation GMC Acadia shared the GM Lambda platform with the Saturn Outlook, the Chevrolet Traverse, and the Buick Enclave. The Acadia went on sale in 2006 as a 2007 model in the United States, Canada and Mexico. The Acadia replaces three of the 7- or 8-seater vehicles on the Pontiac–Buick–GMC dealership network, the midsize GMC Safari van, the GMC Envoy, and the Pontiac Montana SV6 minivan for the domestic market. As of 2009, the Lambda vehicles have replaced the Buick Rainier, Buick Rendezvous, Buick Terraza, and the GMC Envoy XL and then subsequently the GMC Envoy, Chevrolet TrailBlazer and the Isuzu Ascender. A Denali version of the Acadia debuted for 2011. In 2017, the second generation Acadia was repositioned as a mid-size crossover utility vehicle in order to compete within the growing midsize SUV market against the likes of the Ford Explorer, Edge, and Jeep Grand Cherokee. First generation (2007) The Acadia represents GMC's entry-level truck-like CUV and is the first unibody vehicle from the marque. It is also GMC's first front-wheel drive passenger vehicle, and also the first such vehicle of any kind since the 1973-78 GMC Motorhome. The Acadia has seating for eight and either front or all-wheel drive. With a towing capacity, the Acadia slots between the GMC Terrain and the Yukon. The Acadia is the mid-priced Lambda model between the Chevrolet Traverse and Enclave. In December 2006, all production and sales of the Acadia (and the Saturn Outlook) were temporarily stopped due to the engine mounts not having holes drilled to release accumulated water, as well as an issue with potentially faulty rivets in the load floor just forward of the vehicle's rear hatch. The assembly process was quickly adjusted, and dealership sales of the vehicles had resumed within days of the notice. The first-generation Acadia was sold alongside its second-generation replacement as the Acadia Limited. Suspension and chassis The 2008 Acadia has a wheelbase and front/rear tracks. The independent front suspension is a MacPherson strut design, with a direct-acting stabilizer bar and aluminum knuckles. The independent rear suspension uses a "H" Linked design. Steering is power-assisted rack-and-pinion, with an optional variable-effort system. Four-wheel disc brakes with ABS are standard. 19 inch cast aluminum wheels and Goodyear Eagle RS-A M+S P255/60R-19 108H tires with a high-pressure compact spare tire are