OER Parts offers a wide selection of Brake Components for your 2003 GMC Sonoma. OER Parts offers 2003 GMC Sonoma Calipers, 2003 GMC Sonoma OE Calipers, 2003 GMC Sonoma Performance Calipers, 2003 GMC Sonoma Front Calipers, 2003 GMC Sonoma Rear Calipers, 2003 GMC Sonoma Anodized Calipers, 2003 GMC Sonoma Powder Coated Calipers, 2003 GMC Sonoma Wilwood Calipers, 2003 GMC Sonoma 4-Piston Calipers, 2003 GMC Sonoma Aluminum Calipers, and 2003 GMC Sonoma Cast Iron Calipers.