Diagnostic Aids

Improper fuel pressure may cause following conditions: engine cranks but will not start, engine cuts out, hesitation, loss of power, and Code 44 or 45.

Fig 1: Chart A-7 Schematic - Fuel System Pressure Test

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Fig 2: Chart A-7 Flow Chart (1 Of 2) - Fuel System Pressure Test

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Fig 3: Chart A-7 Flow Chart (2 Of 2) Fuel System Pressure Test

Courtesy of GENERAL MOTORS CORP.