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P0748 Diagnostic Trouble Code Discussion for May 2008

Modulator Pressure Solenoid Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0748
Help Request Posted
1996 Chevrolet C1500 Cheyenne 5.0L Excessive Emissions, Hesitation VIN: 2GCEC19M7T
P0748: Pressure Control Solenoid Circuit Malfunction. This truck came in with symptoms of intermittent run rough, idles low and almost stalls. Sometimes doesn't happen a few days in-between. Customer says problem only lasts a few seconds. Of course I can't get any of the symptoms to occur. The tps sweeps good a...
May 07, 2008