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We use the TST 507. Have save us from disaster a few times. Have sensors on Ll wheels of dually and all on the 5th wheel. Put one on the air hitch, that was funny. Every pull or coast the pressure changes and the alarm would go off. End of block, it came off. The folks at TST are very good to work with also.
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2021 GMC 3500HD Dually
2019 3790RD Legacy
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