Avion


Benton Harbor, Michigan | A GMC Transmode Motorhome Upfitter


>> 1975 Avion

As featured in the 2017 Winter Issue of GMC Vintage RVing magazine.

1975 Avion owned by original owners Tommy and Ann Walker, Uvalde, Texas. A big “thank you” to the Walkers who have furnished paperwork plus other items for the GMC Community to enjoy.

Original Exterior


Downloadable pdfs shared by the Walkers:

X9024A – 1980 Drivers Directory of GMC Motorhome Service Representatives

X7526A – 1975 Avion Warranty Pamphlet


Gallery of items shared by the Walkers:



>> Avion Literature

Avion 23′ Brochure (Source: Bill Bryant)


Avion 26′ Brochure (Source: Bill Bryant)


Avion Sunburst & Provincial Brochure (Source: Bill Bryant)



 >> Please Help Us!

GMCMI along with GMC Motorhome Historian Bill Bryant are working on compiling additional information on the Transmodes. If you currently or previously owned a Transmode and have documentation and/or photos, we ask that you please do share them with the GMC Community. Please contact us at or 612-501-4600. Thank you.