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  1. ANSWER: The Lift pump of the GM 6.5 diesel DS-4 OBD-II system

    ANSWER: The Lift pump of the GM 6.5 diesel DS-4 OBD-II system Starts but immediately dies . . .  won't accelerate strongly . . . driving and it cut out but will start again . . . . hard to start in the morning - skip starts requiring a lot of…

  2. ANSWER: Cut-outs of the GM 6.5 diesel

    ANSWER: Cut-outs of the GM 6.5 diesel The 6.5 GM turbo diesel ECM / PCM has a lot of  software issues, but the biggest frustration is the unexpected cut-offs of the engine These can be primarily  caused by the lift pump and its fuel…

  3. ANSWER: Mechanical Injection GM 6.5 diesel

    ANSWER: Mechanical Injection GM 6.5 diesel Yes you read right - mechanical injection 6.5 GM Diesel - it could be a best answer to reliability