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Alex Sirum GMC Motorhomes, Inc. Okeechobee, FL Alex & Jeff Sirum	Alex Sirum GMC is a complete GMC Motorhome maintenance facility, specializing in only the Classic TZE "Class A" factory-built motorhomes from the 70's. The shop is equipped with all the parts, tools, and expertise needed to repair, maintain, and customize a GMC.
Applied GMC Newark, CA Jim Kanomata	Applied GMC is a full service facility equipped with a welding area, vehicle lift, parts supply room, and a clean room for assembling and repairing engines. Applied GMC operates with a full garage and office staff that are available 10 hrs/day, 6 days/week. Applied also has available for sale a quantity of GMC's. Applied has contracts with many RV, electrical, and suspension specialists along with a Northern California towing company. Jim Kanomata, founder, says they maintain the largest inventory of products for the GMC west of the Mississippi River.
Cinnabar Engineering, Inc Sandusky, MI Steve	Cinnabar manufactures and distributes original GMC Motorhome parts and GMC Motorhome publications and has a complete motorhome service center. Cinnabar also publishes GMC Motorhome News, a publication dedicated to the preservation of this classic and timeless vehicle.
Cooperative Motor Works Orlando, FL Jim Bounds	The Cooperative Motor Works is an association of automotive artisans and GMC owners dedicated to the preservation, renovation, restoration and recycling of the classic, front-wheel-drive GMC Motorhome.  Whether for coach-specific parts, information or advice, locating and evaluating a coach, or for full renovation services, the Coop exists to help any GMC owner.
Golby Motor Corporation Kissimmee, FL	For over 30 years, Golby Motor Corporation has been a complete GMC Motorhome maintenance and restoration facility. Golby possesses the certifications, technology and equipment to provide all services and restorations in one location. Along with services, Golby has a parts and accessories department.
Grandview Motorhome, Inc. Marysville, OH Tom Hampton	Grandview Motorhome specializes in the repair and maintenance of classic GMC Motorhomes. Grandview Motorhome was started in 1989 as a response to a growing need within the GMC community. Whether you are in need of a new airbag, routine oil change or complete engine swap, Grandview has the knowledge and experience to get the job done right.
Ken Frey GMC Auto Repair Quakertown, PA Ken Frey	Ken's mission is to maintain, service, and restore GMC Motorhomes.  Ken L. Frey Auto Repair invites you to explore and see what they have to offer. Be aware that the products and services listed on their site are only a fraction of what is available. Contact Ken Frey (preferably by phone) to discuss your needs.
MGM-GMC Montclair, CA Miguel Mendez	Miguel and his crew at MGM-GMC are experienced in providing a full-service capability for GMC owners.
Adohen Supply Co. Avon, OH Scott Adohen	Scott is a specialist in handling Fan-Tastic vent fans for the GMC community. He also carries Viair compressors and JRV holding tank and system monitors.
Custom Instrument Panels Albemarle, NC "Mac" MacNeal	Mac has been designing, building and installing custom dashes for GMC Motorhomes and other recreational products for many years. CIP has a dash that can serve as a direct replacement, an enhanced replacement with more gauges, or other designs that make your GMC's dash look contemporary in every way.
Springfield Ignition Coldwater, On, Canada Dick Paterson	Dick builds Stage I 455 Engines that are above a standard rebuild in components and assembly. He also builds a limited number of blueprint Stage II Olds 455 and 403 Engines. These engines provide excellent power, economy and durability. All engines are test run prior to installation or shipping, with test specs provided. Dick also carries Springfield Ignition's High Performance H.E.I. and 1973-74 points conversion ignitions for all GMC Motorhome applications.
Frank Jenkins GMC Parts & Accessories Gainesville, FL Frank Jenkins	Frank creates replacement parts for the GMC that are no longer produced by the manufacturer. Original plastic items that have deteriorated for over 35 years can now be replaced with handcrafted quality parts. Each piece is custom made of polyester fiberglass or aluminum. The parts and accessories are modernized for a unique look and made more aerodynamic while remaining consistent with traditional GMC designs.
Gateway Motorhome Company St. Louis, MO	Gateway carries a wide variety of parts for the GMC, including replacement parts and parts to enhance the GMC, such as hub-centered aluminum wheels.
Howell Engine Developments, Inc. Marine City, MI	Howell produces throttle body fuel injection kits for the 403 and 455 engines used in the GMC. Howell was formed in 1988 by Bill and Matt Howell to support the growing trend towards the use of electronic fuel injection in older vehicles.
Innovative Products and Engineering Davison, MI Dave Lenzi	Dave Lenzi, the recognized expert in front-end components for the GMC offers a variety of components for the steering system, rear suspension height control valves and copper exhaust gaskets.
Mondello Performance Products Paso Robles, CA Mary Mondello	Joe Mondello began doing research & development work for Oldsmobile in 1968 and his ongoing commitment and dedication has merited him the name of "Dr. Oldsmobile". A variety of performance-enhancing products are available from Mondello Performance Products.
Ragusa Pattern & RV Santa Ana, CA	Ragusa Pattern & RV offers add-on accessories for the GMC and other motorhomes. All items are designed for performance and durability. Products are made of cast aluminum (starter bracket is cast iron) and most are ball-burnished for a lasting shiny finish. Stainless steel fasteners and installation instructions come where needed.