Headquartered in Seattle, WA, Greenbriar Western Peterbilt (GWP) operates the largest network of Heavy and Medium Duty truck dealerships in the Pacific Northwest, with 17 locations in Washington, Oregon, Alaska and Northern California.

GWP's strategically located facilities provide new and used truck sales, aftermarket parts sales, scheduled full service maintenance, repair services, short term trunk rental, long-term full service leasing, truck financing, along with refuse systems and truck crane equipment expertise.

In addition to Peterbilt, GWP represents Volvo, Mack, Autocar, Crane Carrier, GMC and Ford Trucks..