General Motors TW-7603

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GMC TW-7603/T7W-603
Janesville Transit System 412-a.jpg
Years of manufacture 1978 to 1980
Length 35 feet
Width 96 inches
Power/Fuel Diesel

The General Motors TW-7603 is a Rapid Transit Series transit bus of the General Motors RTS-03 generation. The model breakdown is as follows: T signifies a transit model, 7 signifies a 35 foot length, W signifies the use of a Detroit Diesel 6V71N engine, 6 signifies a 96 inch width, and the 03 signifies the generation.

The model was later redesignated during the middle of production to T7W-603.

656 buses were built.


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Demonstrator/Engineering Units

  • List of known demonstrator and engineering buses
Fleet Number Thumbnail Year Serial Engine Transmission Notes
1978 228 Detroit Diesel 6V71N
383 May 1979 383 Detroit Diesel 6V71N
  • GM Engineering bus.
505 January 1980 A505 Detroit Diesel 6V71N
  • GMC Technical Center (Warren, MI)

Preserved Coaches

Year Thumbnail Serial Original Owner Fleet Number Current Owner
1979 ? Cape Ann Transportation Authority 7804 Seashore Trolley Museum
1979 340 Janesville Transit System 410 Laddie Vitek
1979 342 Janesville Transit System 412 Illinois Railway Museum
1979 346 Janesville Transit System 416 Scott Richards
1980 A537 SEPTA 4462 Southeastern Pennsylvania Transportation Authority