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Automotive HD/Fleet Forum

Professional automotive forum for discussion of heavy-duty trucks, buses and other on- and off-road equipment, and maintenance of automotive fleet vehicles. Discussion topics include fuels and lubricants, hydraulics, performance, on-board diagnostics, powertrain, power distribution, anti-lock braking and stability control systems, and best practices as they relate to heavy duty and fleet maintenance. This forum is for experienced automotive repair professionals only, membership required.

Continue to the description of our next automotive discussion forum, the HVAC Forum.

Recent Automotive Discussions in the Automotive HD/Fleet Forum

terrastar start problem
01/31/2023 in the HD/Fleet Forum
I have this terrastar with a maxxforce 7 epa 10 that only will turn over if you immediately turn key all the way to start upon initial attempt to start. If you wait a few seconds and then attempt to start the starter will not activate. the start control o...
Spartan Fire brake parts
01/30/2023 in the HD/Fleet Forum
2006 Spartan Fire pumper 52000-GVWR Spartan is very very slow on parts lookup and pricing! We need brake parts for Front and Rear axles. Rear axle # [...]. We have spoken to several HD parts outlets w/ little help, Freightliner has located rear rotors and...
5900i fuse panel diagram
01/27/2023 in the HD/Fleet Forum
would any one have the Fuse panel Diagram on a 2007 international 5900i I have some dead fuse spots trying to figure out what is missing lots of things not working Vin number [...] Thanks for the help.
Drive to clean filter message
01/16/2023 in the HD/Fleet Forum
[Driveability: 12 Ford F-550 Super Duty Lariat 6.7L] Group, We have the above vehicle that came in for a transmission issue, no comm with the trans control module. We found multiple blown fuses including the 30A that feeds ECM and TCM. TCM had shorted ou...
2016 durmax no start
01/04/2023 in the HD/Fleet Forum
[Driveability: 16 Chevrolet Silverado 3500 HD LT 6.6L] 2016 duramax towed in for a died while driving, another shop had it for a week, cleared all codes so I have nothing. I prime it and still nothing, scan tool showes about 100 pounds of fuel any thing...

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