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1999 GM Transmission Diagnostic Parameters 6.5L Diesel (L57) P-truck, Hummer H1, OEM engine Heavy-Duty (GVW >8500) 4L80-E
Posted to the Waveform Library on 11/18/2015

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GM 1999 6.5L Diesel (L57) P-truck, Hummer H1, OEM engine Heavy-Duty (GVW >8500) 4L80-E TRANSMISSION Diagnostic Parameters. Reprinted on iATN Courtesy of General Motors. Copyright © General Motors. Do not reproduce or redistribute without permission.

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