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GMC Workshop Service and Repair Manuals

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Engine Controls - Revised DTC 0090 Diagnostics|Page 5543 > < Engine Controls - Revised DTC 0090 Diagnostics|Page 5541

Sierra 3500 4WD V8-6.6L DSL Turbo VIN 2 (2004)

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4. If there is a violent fluctuation in the Actual Fuel Rail Pressure, as seen in the surging graph, replace the fuel pressure regulator.

Engine Controls - Revised DTC 0090 Diagnostics|Page 5543 > < Engine Controls - Revised DTC 0090 Diagnostics|Page 5541